Answer:
The HCF of 2a and 14 would be 2 if you want it factored it would be 2(a+7)
3.a family is tracking its spending habits. over the past year, the grocery bill has ranged from $110 to $170. suppose you were going to plot these points on a coordinate grid. (a)what is a good scale to use for the y-axis? explain your reasoning. (b)what is a good interval to use for the y-axis? explain your reasoning.
The $10 scale is a good scale to use for the y-axis. 12 months is sufficient to plot the graph and display the changes.
What is a coordinate system?
coordinate system, Setup of reference lines or curves that are used to pinpoint the locations of points in space The most popular two-dimensional system is called Cartesian (after René Descartes). Points are identified by their separation from a reference point, known as the origin, along a horizontal (x) and vertical (y) axis (0, 0).
Let the y-axis represent the money for groceries and the x-axis the number of months.
Given is that, the grocery bills range from $110 to $170.
We can thus view the changes in the grocery bills over 7 intervals by placing a scale of $10 on the y-axis.
Consequently, a $10 scale is a good scale.
Additionally, the y-axis shows the number of months. It will be sufficient to plot the graph and display the changes in grocery bills over the course of 12 months.
Therefore, 12 points are enough to represent a month.
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Add and subtract the values. Express your answer in scientific notation.(6.15 times 10 Superscript 8 Baseline) minus (2.5 times 10 Superscript 7 Baseline) + (3.4 times 10 Superscript 9 Baseline)6.24 times 10 Superscript 87.05 times 10 Superscript 83.99 times 10 Superscript 94.04 times 10 Superscript 9
Solution
\(\left(6.15\cdot \:10^8\right)-\left(2.5\cdot \:10^7\right)+\left(3.4\cdot \:10^9\right)\)Now
\(=615000000-25000000+3400000000\)Add and subtract
\(=3990000000\)\(3.9\times10^9\)adriannas bedroom has a perimiter of 90 feet the width is 15 feet what is the length of her bedroom?
The length of Adrianna's bedroom that has a perimeter of 90 feet and a width of 15 feet is 30 feet.
To find the length of Adrianna's bedroom, we can use the formula for the perimeter of a rectangle:
P = 2l + 2w
where P is the perimeter, l is the length, and w is the width.
We are given that the perimeter is 90 feet and the width is 15 feet, so we can substitute those values into the formula:
90 = 2l + 2(15)
Simplifying:
90 = 2l + 30
Subtracting 30 from both sides:
60 = 2l
Dividing both sides by 2:
30 = l
Therefore, the length of Adrianna's bedroom is 30 feet.
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Find the value of each variable using sine and cosine. Round your answers to the nearest tenth.s = 31.3, t = 13.3
The value of sin(θ) is approximately 0.921 and the value of cos(θ) is approximately 0.391.
To find the value of each variable using sine and cosine, we need to set up a right triangle with the given information. Let's label the sides of the triangle as follows:
s = 31.3 (opposite side)t = 13.3 (adjacent side)h (hypotenuse)Using the Pythagorean theorem, we can find the length of the hypotenuse:
h2 = s2 + t2
h2 = 31.32 + 13.32
h2 = 979.69 + 176.89
h2 = 1156.58
h = √1156.58
h ≈ 34.0
Now that we know the length of the hypotenuse, we can use sine and cosine to find the values of the variables:
sin(θ) = s / h
sin(θ) = 31.3 / 34.0
sin(θ) ≈ 0.921
cos(θ) = t / h
cos(θ) = 13.3 / 34.0
cos(θ) ≈ 0.391
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Frannie put 1/5 of her music collection on an MP3 player. While on vacation she listened to 1/6 of the music on the player. How much of Frannie’s music collection did she listen to while on vacation? Choose the correct values to describe how to solve the problem.
Draw a rectangular array with 5 rows and A) 5 B) 6 C) 9 rows.
Shade A) 4 B) 1 C) 3 rows gray.
Shade A) 2 B) 1 C) 4 columns black.
Please help me with this I will mark brainliest!!!
Frannie listened to 1/30 of her music collection while on vacation.
We have been given that Frannie put 1/5 of her music collection on an mp3 player. while on vacation, she listened to 1/6 of the music on the player.
To find the amount of music collection listened to by Frannie, while on vacation, we need to find 1/5 of 1/6.
The amount of music collection listened to by Frannie on the vacation: =1/5*1/6
=1/30
Therefore, Frannie listened to 1/30 of her music collection while on vacation.
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Can someone pls help me to solve 15 and 16 and answer 17 I will mark you the brainly pls I will really appreciate
Answer:
15) x = 20
16) y = 45°, z = 30°
17) all 4 corners = 90°, all 4 sides are equal length, diagonals are perpendicular, diagonals bisect the corner angles.
We can't do the extra credit because we do not have a relationship about the side lengths. We just have angle information.
Step-by-step explanation:
15) 2x + 8 = 3x - 12
x = 20
16) 2y = 90°
y = 45°
3z = 90°
z = 30°
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Hola, estoy empezando a ver trigonometria queria ver si me pueden ayudar con este problema: Un extraterrestre diminuto pero horrible está parado en la punta del edificio Empire State (que mide 443443443 metros de alto) y ¡amenaza con destruir la ciudad de Nueva York! Un agente de los Hombres de Negro está parado al nivel del piso, a 181818 metros del edificio, y apunta su pistola láser al extraterrestre. A qué ángulo, en grados, debe el agente disparar su pistola láser? Redondea tu respuesta final a la décima más cercana.
Answer:
El agente debe disparar a un ángulo aproximado de 87.7° con respecto a la horizontal.
Step-by-step explanation:
Sea E la localización del extraterrestre, O, el del hombre de negro, y B, el de la base del edificio. A partir de la información disponible, construimos el diagrama geométrico que indica la presencia de un triángulo rectángulo, el cual puede consultarse en la imagen adjunta.
Podemos determinar el ángulo de disparo mediante la siguiente relación trigonométrica inversa:
\(A = \tan^{-1} \frac{443\,m}{18\,m}\)
\(A \approx 87.7^{\circ}\)
El agente debe disparar a un ángulo aproximado de 87.7° con respecto a la horizontal.
PLEASE HELP ASAP!!!!
The shape below is a cuboid.
Find the length of AG to 2 d.p.
The length of AG is approximately 34.47 mm to 2 decimal places.
what is length ?
In mathematics, length is a measure of distance along a straight line or curve. It is a fundamental concept in geometry and is defined as the distance between two points in space.
what is decimal places ?
In mathematics, decimal places refer to the number of digits that appear after the decimal point in a number expressed in decimal form.
In the given question,
To find the length of AG, we can use trigonometry and the given angles. Let's label some points on the diagram:
Let O be the center of square aehd, and let M be the midpoint of AD.
We can see that triangle AOG is a right triangle, since AO and OG are perpendicular (because square aehd is perpendicular to square bfgc). Therefore, we can use trigonometry to find the length of AG.
First, let's find the length of OM. Since M is the midpoint of AD, we know that OM = AD/2 = 21 mm.
Next, let's find the length of AM. We can use trigonometry and the given angles:
tan(27) = AM/AG => AM = AG * tan(27)
tan(36) = AM/OM => AM = OM * tan(36)
Therefore, we can combine these two equations to find AG:
AG * tan(27) = OM * tan(36)
AG = OM * tan(36) / tan(27)
AG = 21 * tan(36) / tan(27)
AG ≈ 34.47 mm (rounded to 2 decimal places)
Therefore, the length of AG is approximately 34.47 mm to 2 decimal places.
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Bob is throwing a party. He has 222222 pints of soda. At the end of the party, there are 888 pints of soda.
How many cups of soda were drank during the party?
I do not know that that is hard
Answer: Why does this guy need so much soda? And my brain isn't working for math right now. Sorry sweetheart.
Step-by-step explanation: Have a nice day!
Smith City received 2. 45 inche of rain on Monday and 1. 72 inche of rain on Tueday. Write an equation howing a way to etimate to the nearet inch the total rainfall for the two day
an equation showing a way to estimate to the neasrt inch the total rainfall for the two day 2.45 + 1.72 ≈ 4.2 inches
1. Add the two amounts of rainfall together: 2.45 + 1.72
2. Round the answer to the nearest inch: 4.2 inches
3. The equation to estimate the total rainfall for the two days is 2.45 + 1.72 ≈ 4.2 inches.
This equation provides a simple way to estimate the total rainfall for two days. By adding the two amounts of rainfall, we can then round the answer to the nearest inch to obtain the estimated total rainfall. This equation can be used to quickly and accurately estimate rainfall totals for any two-day period.
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Please help me with this problem fast.
The transformation that maps △UVW onto △U'V'W' is (d) 270 degrees counterclockwise
How to determine the transformationFrom the question, we have the following parameters that can be used in our computation:
The figure
From the figure, we can see that
Triangle △UVW has the same side length as the triangle △U'V'W'
This means that
(x, y) = (x, y)
The orientations are 270 degrees apart in the counterclockwise direction
So, we have
(x, y) = (y, -x)
Hence, the transformation is (d)
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4. Automotive Trades At the beginning of the day on Monday, the parts
department has on hand 520 spark plugs. Mechanics in the service depart-
ment estimate they will need about 48 plugs per day. A new shipment of
300 will arrive on Thursday. Write out a mathematical statement that gives
the number of spark plugs on hand at the end of the day on Friday. Calcu-
late this total.
StS estimate
Therefore , the solution of the given problem of equation comes out to be 580 spark plugs will be left.
Describe the equation.Using the equals symbol (=), a mathematical equation appears to be a formula that connects two statements and denotes equality. A scientific assertion that supports the equality of two mathematical abstraction is known as an equation in algebra. For instance, the equal sign is present between the variables ptdc + 6 and 12 in the output obd + 6 = 12. The link between the syllable on either side of either a letter is described by a mathematical formula. In many cases, the logo and the say — are identical.
Here,
Given: A new supply of 300 spark plugs will come on Thursday,
and 520 spark plugs require 48 plugs per day.
To determine an equation to determine however many plugs will just be left at the end of Friday:
So,
where n is the no of days
=> 520 - 48*n + 300
=> 520 - 48*5 + 300
=> 520 - 240 + 300
=> 520 + 60
=> 580
Therefore , the solution of the given problem of equation comes out to be 580 spark plugs will be left.
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Simplify the expression. Write your answer as a power. (−3)^4(−3)^1
Answer:
-243
Step-by-step explanation:
Do only equations with variables on both sides have no solution? Or can the variable be just on one side? Justify your answer. Choose the correct answer below.
A. Every equation with variables on both sides has no solution. However, it is also possible for an equation with the variable on only one side to also have no solution.
B. If the variable only appears on one side of an equation, then the equation can always be solved for the variable. This means that if an equation has no solution, then the variable must appear on both sides.
C. Any equation can have one solution, infinitely many solutions, or no solutions. This does not depend on whether the variable appears on only one side or on both sides.
D. If the variable only appears on one side of an equation, then the equation can always be solved for the variable. By contrast, an equation with variables on both sides always has no solution or infinitely many solutions.
Answer:
No only variable on both sides have no solution
Step-by-step explanation:
Then you can get,
for example x=x
or,
y=y
Answer:
Option CStep-by-step explanation:
A. Every equation with variables on both sides has no solution. However, it is also possible for an equation with the variable on only one side to also have no solution.
False, the first pat incorrect. The equation can be simplified to have variable on one side and solved further.B. If the variable only appears on one side of an equation, then the equation can always be solved for the variable. This means that if an equation has no solution, then the variable must appear on both sides.
False, the second part is incorrect. If an equation has no solution, then variables disappear and it results in nonsense equation.C. Any equation can have one solution, infinitely many solutions, or no solutions. This does not depend on whether the variable appears on only one side or on both sides.
TrueD. If the variable only appears on one side of an equation, then the equation can always be solved for the variable. By contrast, an equation with variables on both sides always has no solution or infinitely many solutions.
False, the second part is incorrect. The variables can be taken to the same side of equation. If they cancel and leave a correct equation, then it results in infinitely many solutions. If they cancel and leave incorrect equation, then it results in no solution. If it simplifies with variable on one side, then there is one solution.Ms. Wilson purchased a welcome mat for her front porch that is a semicircle. The straight side of the mat is 38 inches. To the nearest hundredth, what is the area of the porch mat?
Answer:
567.06 in.²
Step-by-step explanation:
The mat is a semicircle.
The straight side is a diameter.
d = 38 in.
r = d/2 = 19 in.
Area of circle = πr²
Area of semicircle = πr²/2
A = 3.14159 × (19 in.)² / 2
A = 567.06 in.²
Mr.Klein's class is selling candy for a fundraiser. The class has a goal of raising $450 for selling c boxes of candy. Each box of candy costs $3.75
Answer:
3.75c=450
Step-by-step explanation:
Answer:
The class would need to sell 120 boxes of candy.
Step-by-step explanation:
You divide 450 by 3.75
450 ÷ 3.75 = 120
Question 6
Which expression is equivalent to the expression shown?
2
7147²
712
17
716
77
Answer:
7^12
Step-by-step explanation:
if you are dividing the base numbers then you are subtracting the exponents
A foundry manufactures aluminum trays from pieces of sheet metal as shown. A. Write an expression for the length of the metal tray. 20 in. 14 in. X Х Х
The length of the metal tray can be determined by adding the given dimensions of the tray, which are 20 inches and 14 inches, along with the unknown dimensions represented by "X."
To find the length of the metal tray, we need to consider the given dimensions and the unknown dimensions represented by "X." Let's assume that the length of the metal tray is L. From the given diagram, we can observe that the 20-inch dimension corresponds to one end of the tray, and the 14-inch dimension corresponds to the other end of the tray. In between, there are three sections denoted by "X."
Therefore, the expression for the length of the metal tray can be written as L = 20 + X + X + X + 14, which simplifies to L = 54 + 3X. Thus, the length of the metal tray can be calculated by adding the fixed dimensions and three times the value of "X."
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Given: Q = 7m + 3n, R = 11 - 2m, S = n + 5, and T = -m - 3n + 8.
Simplify R - S + T.
-3m - 4n + 14
-m + 2n - 2
m - 2n - 2
3m - 4n + 14
Answer:
The first: -3m - 4n + 14Step-by-step explanation:
Q = 7m + 3n,
R = 11 - 2m,
S = n + 5,
T = -m - 3n + 8.
R - S + T = 11 - 2m - (n + 5) + (-m - 3n + 8)
R - S + T = 11 - 2m - n - 5 - m - 3n + 8
R - S + T = 14 - 3m - 4n
R - S + T = -3m - 4n + 14
Watch help video Find the length of the third side. If necessary, write in simplest radical form. 7 4√2
In simplest radicle form, the length of the third side = 9 units.
Given,
Side A = 7 units.
Side B = 4√2 units.
To find Side C, we use the Pythagorean formula,
a² = b² + c²
7² = \(4\sqrt{2}^{2}\) + c²
c² = 49 + 32
c² = 81
√c² = √81
c = -9,9.
c ≠ -9 as negative values are not considered for dimensions.
Hence, the length of the third side is 9 units.
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Your question is incomplete. The complete question is:
With reference to the figure below, find the length of the third side. If necessary, write in the simplest radical form.
A medical company is building a model to predict the occurrence of thyroid cancer. The training data contains 900 negative instances (people who don't have cancer) and 100 positive instances. The resulting model has 90% accuracy, but extremely poor recall. What steps can be used to improve the model's performance? (SELECT TWO)
A. Under-sample instances from the positive (has cancer) class
B. Generate synthetic samples using SMOTE
C. Over-sample instances from the negative (no cancer) class
D. Collect more data for the positive case
E. Use Bagging
To improve the model's performance in predicting thyroid cancer occurrence, two potential steps to consider are: generating synthetic samples using SMOTE and collecting more data for the positive cases. option b and d
The given problem scenario involves imbalanced classes, with a significantly higher number of negative instances compared to positive instances. This class imbalance can lead to biased model performance, such as poor recall for the minority class (positive instances in this case). Here are the two selected steps and their rationale:
B) Generating synthetic samples using SMOTE: SMOTE is a technique used to address class imbalance by creating synthetic samples of the minority class. It generates new instances by interpolating between neighboring instances of the minority class. By using SMOTE, the positive class can be over-sampled, increasing the representation of thyroid cancer cases in the training data. This can help the model learn better decision boundaries for positive instances and improve recall.
D) Collecting more data for the positive cases: Increasing the number of positive instances in the training data can provide the model with more information to learn from. Collecting additional data specifically for positive cases, such as acquiring more samples of individuals diagnosed with thyroid cancer, can help in better capturing the characteristics and patterns associated with cancer occurrence. This can lead to a more balanced representation of the classes and potentially improve recall.
While options A (under-sampling instances from the positive class) and E (using Bagging) are also strategies to address class imbalance, they may not be as effective in this specific scenario. Under-sampling positive instances may further reduce the information available for learning, and Bagging, although useful for ensemble learning, may not directly address the class imbalance issue or improve recall.
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help me answer this i dont know how to do it HELP
Answer:
Step-by-step explanation:
22 he sahwv i;b ihba
Using the lateral height you found, calculate the lateral area of the pyramid shown below.
The lateral area of the square pyramid in this problem is given as follows:
672 ft².
How to obtain the area of a triangle?The area of a rectangle of base b and height h is given by half the multiplication of dimensions, as follows:
A = 0.5bh.
Considering a right triangle with sides of 14/2 = 7 ft and h ft, and hypotenuse of 25 ft, applying the Pythagorean Theorem, the height of each lateral face is given as follows:
h² + 7² = 25²
\(h = \sqrt{25^2 - 7^2}\)
h = 24.
The lateral area of the pyramid is composed by four triangles of base 14 ft and height 24 ft, hence it is given as follows:
LSA = 4 x 1/2 x 14 x 24
LSA = 672 ft².
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What is the answer??
Answer:
31
Step-by-step explanation:
Square both sides of the equation to get
x+5 = 36
x = 31
The cypress beam found in the tomb of Sneferu in Egypt contained 55% of the radioactive carbon -14 that is found in living cypress wood. Estimate the age of the tomb. (Half-life of Carbon -14 is approximately 5600 years; A = A_0 e^kt)
Previous question
Therefore, based on the given information, the estimated age of the tomb is approximately 3,970 years.
To estimate the age of the tomb based on the radioactive carbon-14 (C-14) content in the cypress beam, we can use the decay equation:
A = A₀ * e*(kt)
Where:
A = Final amount of radioactive substance (55% of the original C-14 content)
A₀ = Initial amount of radioactive substance (100% of the original C-14 content)
k = Decay constant (ln(2) / half-life of C-14)
t = Time (age of the tomb)
Given that the half-life of C-14 is approximately 5600 years, we can calculate the decay constant:
k = ln(2) / 5600 years
Now we can plug in the values:
0.55A₀ = A₀ * e*((ln(2) / 5600 years) * t)
Dividing both sides by A₀:
0.55 = e*((ln(2) / 5600 years) * t)
Taking the natural logarithm of both sides:
ln(0.55) = (ln(2) / 5600 years) * t
Now we can solve for t, the age of the tomb:
t = (ln(0.55) * 5600 years) / ln(2)
Evaluating the expression:
t ≈ 3,970 years
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Describing Types of Dilations
There are distinct differences between an enlargement and a reduction with dilations. Describe the key facts about both types of dilations.
Answer:
The key fact about the enlargement, scale factor > 1
The key fact about the reduction, 0 < scale factor < 1
Step-by-step explanation:
Let us explain what is the dilation?
A dilation is a transformation that changes the size of a figure.It can become larger or smaller, but the shape of the figure does not change. The scale factor measures how much larger or smaller the image will be If the scale factor greater than 1, then the image will be larger If the scale factor between 0 and 1, then the image will be smallerEnlargement means the image of a figure after dilation is larger than the original figure
Reduction means the image of a figure after dilation is smaller than the original figure
The key fact about the enlargement is that the scale factor of dilation must be greater than 1 ⇒ scale factor > 1
The key fact about the reduction is that the scale factor of dilation must be between 0 and 1 ⇒ 0 < scale factor < 1
Answer:
An enlargement has a scale factor greater than 1 and the image has a longer distance from the point of dilation than the pre-image. A reduction has a scale factor between 0 and 1, and shrinks on the coordinate plane.
Step-by-step explanation:
This is the sample respond on Edg. I just took the assignment and it was right.
Write the slope-intercept equation of a line that passes through the points (-2, 5) and (6, -4)
The slope intercept form of a line which passes through the points (-2, 5) and (6, -4) is y = (-9/8)x + 11/4.
According to the question.
A line passes through the two points (-2, 5) and (6, -4).
As we know that, the slope intercept formula y = mx + b is used when you know the slope of the line to be examined and the point given is also the y intercept (0, b). In the formula, b represents the y value of the y intercept point.
So, the slope of the line = -4 -5/(6 + 2) = -9/8
And, the slope intercept form of a line which passes through the points (-2, 5) and (6, -4) is given by
y = (-9/8)x + b
Since, the line passes through (-2, 5) and (6, -4). So, both the points must statisfy the above equation.
⇒ 5 = (-9/8)(-2) + b
⇒ 5 = 9/4 + b
⇒ b = 5 - 9/4
⇒ b = (20 - 9)/4
⇒ b = 11/4
Therefore, the slope intercept form of a line which passes through the points (-2, 5) and (6, -4) is y = (-9/8)x + 11/4.
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On a map, 1 inch equals 100 miles. If Boston is 250 miles away from Dover, how far away is it on the map
Answer:
2.5 inch i think because 1 inch equals 100 miles and .5 i think it is 50 miles
-11-6b+ 3 = 16 + 2b.
Answer:
-3=b
Step-by-step explanation:
Hey there!
In order to find the value for b, we must first combine all like terms
-11-6b+3=16+2b
-8-6b=16+2b
-24=8b
Now we simplified the equation to a point where we can find the value of b in one step
-24/8 = 8b/8
-3=b
Answer:
-3
Step-by-step explanation:
Bring to the right of = the Number with b and to the left the other.
Remember to change sign of Number when you switch
So
\( - 11 + 3 - 16 = 2b + 6b\)
Do addition
\( - 24 = 8b\)
Find b
\(b = - 24 \div 8\)
b= -3
In each of the following assumethat the base is 10. Prove that: (1) log (¹) + log() + log()+ log()-log()=0.
The value of logarithmic function, log360 is 3log2 + 2log3 + log5 as prooved below.
To prove that log360 = 3log2 + 2log3 + log5:
We will use the logarithmic property that states log(a * b) = log(a) + log(b).
Logarithmic properties refer to the rules and relationships that govern the manipulation and simplification of logarithmic expressions. These properties are useful in various areas of mathematics, such as algebra, calculus, and number theory.
Starting with the left side:
log360
Since 360 can be expressed as the product of its prime factors \((2^3 * 3^2 * 5^1)\), we can rewrite it as:
\(log(2^3 * 3^2 * 5^1)\)
Using the logarithmic property mentioned earlier, we can expand it further:
\(log(2^3) + log(3^2) + log(5^1)\)
Which simplifies to:
3log2 + 2log3 + log5
Therefore, log360 = 3log2 + 2log3 + log5 is proven.
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Complete question:
log360 = 3log2 + 2log3 + log5