Answer:
x = –4
Step-by-step explanation:
y = –2x + 8
16 = –2x + 8
2x = 8 – 16
2x = –8
x = –4
help with this question
Answer:
B
Step-by-step explanation:
this is super simple!
volume = length * width * height
the base = length * width
volume = base * height
Answer:
B.
Step-by-step explanation:
The volume of any rectangular box is the product of all its dimensions
I hope this help you
I need help please ):
And if u don’t know the answers do not comment anything because i'm really looking for help!
Answer:
x=16
Step-by-step explanation:
During a family car trip, a family travels for 1 hour at 70
miles per hour. Then the family travels for 2 more hours at
55 miles per hour.
What is the family's average speed during the trip?
A. 62.5 mph
B. 65 mph
C. 58.5 mph
D. 60 mph
Answer: The answer is D.
Step-by-step explanation: In one hour they went 70 miles, and in the next two they went 55 miles. So to find the answer you simply find the average of 70, 55, and 55 which comes out to be 60.
How much water can the large water hold?
Answer:
700 ml
Step-by-step explanation:
If the 15cm bottle holds 500ml of water, you can create the ratio of 15:500, which simplifies to 3:100.
Since the second bottle is 21cm, you find 21:x.
Because you already have 3:100 as given from the first bottle, if you multiply both sides by 7 you get 21:700.
This means the second bottle holds 700ml.
Answer:
700 mi of water
Step-by-step explanation:
We can divide 21 by 15 to how many times greater they are to each other
21÷15=1.4
Since the 15 cm bottle of water can hold 500 mi we multiply 500 • 1.4 = 700mi
Brainliest please
Plz help i will mark brainliest
Given the equation y = 3(2)x
Regarding the exponential function y = 3(2)^x, we have that:
We know that the graph has a y-intercept at (0,3), because the a-value is of 3.We know that the graph models exponential growth, because the b-value is of 2.The numeric value of the function at x = 3 is given as follows: 24.What is the exponential function?An exponential function is defined as follows:
y = ab^(x/n).
In which the parameters are defined as follows:
a is the initial value.b is the rate of change.n is the time needed for the rate of change.The function for this problem is given as follows:
y = 3(2)^x.
Hence the parameters are given as follows:
a = 3 -> y-intercept at (0,3).b = 2 > 1, hence exponential growth.At x = 3, the numeric value of the function is obtained as follows:
y = 3 x 2^3
y = 3 x 8
y = 24.
More can be learned about exponential functions at https://brainly.com/question/30113628
#SPJ1
Help with my home work
solve 8x - 3y =11 for y
Answer:
Y = 8/3x + -11/3
Step-by-step explanation:
8x - 3y =11
- 8x to both sides
-3y = 11 - 8x
divide by -3
Y = 8/3x + -11/3
Answer:
\(\bold{y=\dfrac83\,x-\dfrac{11}3}\)
Step-by-step explanation:
\(\bold{8x-3y=11}\\\\{}\ \ -8x\qquad-8x\\\\\bold{-3y=-8x+11}\\\div(-3)\quad \ \div(-3)\\\\\bold{y=\dfrac{-8x+11}{-3}}\\\\\bold{y=\dfrac83\,x-\dfrac{11}3}\)
If I was asked to think of a number and multiply it by 2 I would get 2x
Answer:
5x - 3
Step-by-step explanation:
Given:
A Number and multiply it by 2.
To Find:
to write it algebraically
Solution:
Let the number that was asked to think to be x.
Then it is multiplied by 2 which becomes 2x.
Now the number is multiplied by 5.
So, x multiplied by 5 will become 5x.
Then, 5x is subtracted from 3.
So, we can write it as 5x - 3
Therefore, it can be written as 5x - 3 algebraically.
With which set of information can you construct a unique triangle?
OA the measurements of all the angles
ОВ.
the lengths of two sides
OC. the measurements of two angles
OD. the lengths of all the sides
OE the measurement of one angle
Answer:
D
Step-by-step explanation:
This would be using the SSS.
Which means knowing three sides.
The other options do not relate to any of the SSS, SAS, ASA, RHS
Hope that helped!!! k
i dont kown
pllease help
Answer:
Step-by-step explanation:
Half a turn is 180
so 180-33 is your
A girl and a puppy are 850 feet apart when they start running towards each other. The girl runs at a speed of 8 feet per second, and the puppy runs at a speed of 7 feet per second. How soon will they meet?
Answer:
time taken = 850/(8+7) =56.6 second
Answer:
The answer is: 56 2/3
Step-by-step explanation:
First add up the amount of feet they run all together every second. 8+7=15 feet/second. You have to find the total amount of seconds for them to meet so you divide. 850 divided 15 equals 56 2/3 seconds. That's your answer.
Consider the figure. A right angle has a hypotenuse of 18. It's height is drawn in. From the height to the farther vertex on the hypotenuse it is 16 units. The longer leg is a units long. What values should x and y have to complete the proportion xa = ay , where x is a hypotenuse?
Therefore, the values of x and y that complete the proportion xa = ay are:
y = a²/[a² - 16²/a²]
Where x is a hypotenuse?Let H be the foot of the perpendicular from the right angle to the hypotenuse, and let X be the point where the height meets the hypotenuse.
We have the following relationships:
By the Pythagorean theorem, we have AH² + XH² = a².
By similar triangles, we have AX/HX = a/16, which implies AX = aH/4.
By the Pythagorean theorem again, we have XH² + 16² = 18², which implies XH = 2√17.
By similar triangles again, we have HX/HY = XA/AY, which implies HX/(a-XA) = XA/AY, which simplifies to HX/AX = (a-XA)/AY, which implies AY = AX(a-XA)/HX.
Now we can substitute the expressions for AX, XH, and AY in terms of a and XA into the equation xa = ay and solve for XA:
x(a - XA)/HX = xa
xa - xXA = xaHX/a
XA = (a²HX - x²HX)/a²
XA = HX(a² - x²)/a²
XA = 2√17(a² - x²)/a²
Therefore, the values of x and y that complete the proportion xa = ay are:
x = aH/4
y = a²HX/AY
y = a²HXa/[HX(a² - x²)]
y = a²/[a² - 16²/a²]
Learn more about Pythagorean theorem here:
brainly.com/question/14930619
#SPJ1
CAN SOMEONE PLEASE HELP ME ASAP! (SHOW YOUR WORK)
Answer:
Step-by-step explanation:
-5/3 + -5/4
-50/12 + -15/12 = -65/12 = -5 5/12
Answer:
-2 11/12
Step-by-step explanation:
-1 2/3 = -5/3
=> -5/3 -5/4
Do LCM,
=> -20/12 -15/12
=> (-20-15)/12
=> -35/12
=> -2 11/12
A bacteria culture initially contains 2000 bacteria and doubles every half hour. Find the size of the baterial population after 20 minutes. Round to two decimal places. Find the size of the baterial population after 4 hours.
The bacterial population size after 20 minutes is approximately 4000 bacteria. After 4 hours, the population size is approximately 51,200 bacteria.
In 20 minutes, which is equivalent to 40 half-hour intervals, the bacterial population doubles 40 times. Starting with 2000 bacteria, doubling it 40 times gives us 2000 * \(2^{40}\), which is approximately 4000 bacteria.
To find the population size after 4 hours, we need to convert the time to half-hour intervals. There are 8 half-hour intervals in 4 hours. Starting with 2000 bacteria and doubling it 8 times gives us 2000 * \(2^8\), which equals 51,200 bacteria.
In summary, the bacterial population after 20 minutes is approximately 4000 bacteria, while after 4 hours, it is approximately 51,200 bacteria.
Learn more about population here:
https://brainly.com/question/31598322
#SPJ11
mark spins a penny 100 times and it lands head side up 41 times. explain why mark's experimental probability may be different from the theoretical probability of spinning a coin.
Therefore, the actual observed number of heads (41/100) was different from the theoretically predicted chance of receiving heads, which would be 50/100 or 0.50.
What is probability?Simply put, probability is the likelihood that something will occur. When we don't know how an event will turn out, we might discuss the likelihood or likelihood of several outcomes. Statistics is the study of occurrences that follow a probability distribution.
Here,
One possible explanation would be that the penny was less than perfect, that is, not perfectly balanced, not perfectly round, and the surface on which the penny was spun was slightly uneven.
So, the number of actual, observed heads (41/100) differed from the theoretical probability of getting heads, which would be 50/100, or 0.50.
To know more about probability,
https://brainly.com/question/11234923
#SPJ4
Rachel buys a bag of apples for $3.21. She pays for the bag with a $20 bill. How much change should Rachel receive?
Answer:
$16.79
Step-by-step explanation:
20 - 3.21 = 16.79
what is the constant of proportionality, y/x?
Answer:
7/2
Step-by-step explanation:
y/x = rise / run = slope of the line
Pick two convenient integer coordinate points , say 00 and 2,7
slope = (7-0) / ( 2-0) = 7/2
A friend offers you a free ticket to a concert, which you decide to attend. The concert takes 4 hours and costs you $15 for transportation. If you had not attended the concert, you would have worked at your part-time job earning $15 per hour. What is the true cost of you attending the concert?
The true cost of you attending the concert is $60.
The correct answer for the given problem is as follows:
Opportunity cost is the true cost of you attending the concert.
The reason being, the person had to give up an alternative use of their time to attend the concert.
In the given situation, if the person had not attended the concert they would have worked at their part-time job earning $15 per hour.
Thus, the opportunity cost for attending the concert is equal to the amount of money you would have earned had you not gone to the concert.
So, the opportunity cost of attending the concert would be: $15/hour × 4 hours = $60
The true cost of you attending the concert is $60.
Know more about cost:
https://brainly.com/question/17120857
#SPJ11
4. for the calories of each burger: a. find q1, q2, q3, the range and the iqr. b. calculate the outlier boundaries for the data set. are there any outliers? c. determine the value at the 70 th percentile
a. The values of Q1 = 355, Q2 = 510, Q3 = 910, range = 980 and IQR = 555.
b. The lower bound is not applicable and the upper bound is 1195. There are no outliers.
c. The value at the 70th percentile is approximately 725.6 calories.
a. For the calories of each burger, we will find the Q1, Q2, and Q3, range, and IQR as follows -
Q1 (25th percentile): The median of the lower half of the data set.Arranging the calorie values in order from smallest to largest we get,
250, 300, 410, 430, 445, 460, 510, 540, 670, 710, 840, 980, 1230.
The median of the lower half (from 250 to 540) is the average of the two middle values: (300 + 410) / 2 = 355.
Therefore, Q1 = 355.
Q2 (50th percentile or median): The middle value of the data set.Arranging the calorie values in order from smallest to largest we get,
250, 300, 410, 430, 445, 460, 510, 540, 670, 710, 840, 980, 1230.
The middle value is the median: Q2 = 510.
Q3 (75th percentile): The median of the upper half of the data set.Arranging the calorie values in order from smallest to largest we get,
250, 300, 410, 430, 445, 460, 510, 540, 670, 710, 840, 980, 1230.
The median of the upper half (from 670 to 1230) is the average of the two middle values: (840 + 980) / 2 = 910.
Therefore, Q3 = 910.
Range: The difference between the largest and smallest values.Range = 1230 - 250 = 980.
IQR (Interquartile Range): The difference between Q3 and Q1.IQR = Q3 - Q1 = 910 - 355 = 555.
b. To calculate the outlier boundaries, we need to first calculate the lower and upper limits as follows -
Lower bound: Q1 - 1.5 x IQR
Upper bound: Q3 + 1.5 x IQR
Lower bound: 430 - 1.5 x 310 = -25
Upper bound: 740 + 1.5 x 310 = 1195
Since there are no negative values for the calories of the burgers, the lower bound is not applicable. The upper bound is 1195, which is higher than the highest value in the dataset (1090). Therefore, there are no outliers.
c. To determine the value at the 70th percentile, we need to first order the calorie values from lowest to highest as follows -
250, 300, 410, 430, 445, 460, 510, 540, 670, 710, 740, 840, 980, 1090, 1230
Next, we will calculate the percentile rank of the 70th percentile -
Percentile rank = (70/100) x (n + 1) = 10.6
Since the percentile rank is not a whole number, we need to interpolate between the 10th and 11th values in the ordered list:
10th value: 710
11th value: 740
Using linear interpolation, we get:
Value at the 70th percentile = 710 + 0.6 x (740 - 710) = 725.6
Therefore, the value at the 70th percentile is approximately 725.6 calories.
Read more about outliers:
brainly.com/question/24195133
#SPJ4
The complete question is -
For the calories of each burger:
a. find q1, q2, q3, the range, and the IQR.
b. calculate the outlier boundaries for the data set. are there any outliers? c. determine the value at the 70th percentile.
On a coordinate plane, 2 straight lines are shown. The first solid line has a negative slope and goes through (negative 2, 3) and (0, negative 1). Everything to the left of the line is shaded. The second dashed line has a negative slope and goes through (0, 2) and (1, 0). Everything to the right of the line is shaded.
Which inequality pairs with y≤−2x−1 to complete the system of linear inequalities represented by the graph?
y<−2x+2
y>−2x+2
y<2x−2
y>2x−2
To see the graph, the inequality pairs with y≤ −2x−1 to complete the system of linear inequalities is
y > -2x + 2.
Given,
In the question:
The inequality is given as:
y ≤ −2x−1
Now, According to the question:
The upper part of the graph must be an inequality that doesn't include the actual boundary line because such is represented with a dotted line instead of a solid one (so the equal sign must NOT be in the inequality).
The boundary line for the upper section has also the same slope as the one given (-2), and we also see that it goes through the value 2 on the y-axis, so such line in slope y-intercept form must be: y = -2x + 2
Since we need to include the (x, y) values on the plane that are "larger than" (y-value above) the boundary line we found, we need to select the "greater than" symbol for the inequality and :
y > -2x + 2.
Learn more about Graphs at:
https://brainly.com/question/10712002
#SPJ1
A group of students consists of four people in all; two women and two men. They agree to take turns taking notes in lecture. One person at a time will be selected at random from the group (without replacement) until everyone has had a turn. The expected value of the number of people selected before and including the first time a woman has a turn is (Q17)______ .
The standard error of the number of people selected before and including the first time a woman has a turn is (Q18)______ .
The expected value of the number of people selected before and including the first time a woman has a turn is 1.6667 and the standard error is 0.7454.
How to illustrate the information?It should be noted that the expected value will be:
1[p(x = 1)] + 2[p(x = 2)] + 3[p(x = 3)]
= 1(0.5) + 2(0.3333) + 3(0.1667)
= 1.6667
Var(X) = E(X²) - E(X)2
= 3.3335 & (1.6667)²
= 0.555611
The standard error will be:
= ✓0.555611
= 0.7454
Learn more about standard error on:
brainly.com/question/14467769
#SPJ1
what is 13 x 13 x 14 please help I will give you brainliest and 100 points to answer the question.
Answer:
13 × 13 × 14 = 2,366
Step-by-step explanation:
13 x 13 = 169
169 × 14 = 2366
Answer:
\(13 \times 13 \times 14 \\ = {13}^{2} \times 14 \\ = 169 \times 14 \\ = 2366 \\ thank \: you\)
PLEASE HELP ME URGENT PLEASE
WILL MARK BRAINLIEST
WILL GIVE 5.0 STARS
WILL GIVE THANKS
50 POINTS
PLEASE HELP ME URGENT PLEASE
PLEASE HELP ME URGENT PLEASE
WILL MARK BRAINLIEST
WILL GIVE 5.0 STARS
WILL GIVE THANKS
50 POINTS
PLEASE HELP ME URGENT PLEASE
PLEASE HELP ME URGENT PLEASE
WILL MARK BRAINLIEST
WILL GIVE 5.0 STARS
WILL GIVE THANKS
50 POINTS
PLEASE HELP ME URGENT PLEASE
Answer:
a = 20°
b = 160°
c = 125°
u = 110°
v = 70°
w = 110°
x = 70°
y = 110°
z = 110°
Step-by-step explanation:
Theorems
Vertical Angles Theorem: When two straight lines intersect, the vertical angles are congruent.Angles on a straight line: Angles on a straight line sum to 180°.Corresponding Angles Postulate: When two parallel lines are cut by a transversal, the corresponding angles are congruent.Same-side Exterior Angles: When two parallel lines are cut by a transversal, the same-side exterior angles sum to 180°.Using the Vertical Angles Theorem:
⇒ a = 20°
Using the Angles on a straight line Theorem:
⇒ 20° + b = 180°
⇒ b = 180° - 20°
⇒ b = 160°
Using the Vertical Angles Theorem:
⇒ c + 35° = b
⇒ c + 35° = 160°
⇒ c = 160° - 35°
⇒ c = 125°
Using the Vertical Angles Theorem:
⇒ u = 110°
⇒ v = 70°
Using the Same-side Exterior Angles Theorem:
⇒ v + w = 180°
⇒ 70° + w = 180°
⇒ w = 180° - 70°
⇒ w = 110°
Using the Corresponding Angles Postulate:
⇒ y = 100°
Using the Vertical Angles Theorem:
⇒ y = z = 110°
Using the Angles on a straight line Theorem:
⇒ x + z = 180°
⇒ x + 110° = 180°
⇒ x = 180° - 110°
⇒ x = 70°
Classified ads in a newspaper offered for sale 20 used cars of the same make and model. The output of a regression analysis is given. Assume all conditions for regression have been satisfied. Create a 95% confidence interval for the slope of the regression line and explain what your interval means in context. Find the 95% confldence interval for the slope. The confidence interval is (Round to two decimal places as needed.)
Confidence interval refers to a statistical measure that helps quantify the amount of uncertainty present in a sample's estimate of a population parameter.
This measure expresses the degree of confidence in the estimated interval that can be calculated from a given set of data. In this scenario, the task is to build a 95% confidence interval for the regression line's slope. The regression analysis output has already been given. According to the output given, the estimated regression model is:y = 25,000 + 9,000 x, where x represents the number of miles the car has been driven and y represents the car's selling price.
The formula to calculate the 95% confidence interval for the slope is:Slope ± t · SE, where Slope is the point estimate for the slope, t represents the critical t-value for a given level of confidence and degrees of freedom, and SE represents the standard error of the estimate. The value of t can be calculated using the degrees of freedom and a t-table. Here, the number of pairs in the sample size is 20, and the model uses two parameters.
Therefore, the degrees of freedom would be 20 - 2 = 18.The critical t-value for a 95% confidence interval and 18 degrees of freedom is 2.101. Using the formula given above, we can calculate the 95% confidence interval for the slope as follows:Slope ± t · SE= 9000 ± (2.101)(700) ≈ 9000 ± 1,467.7 = [7,532.3, 10,467.7]Therefore, the 95% confidence interval for the slope is [7,532.3, 10,467.7]. This means that we are 95% confident that the true value of the slope for this model falls within the interval [7,532.3, 10,467.7].
It implies that the price of the car increases by $7,532.3 to $10,467.7 for each mile driven by the car. In conclusion, a 95% confidence interval has been calculated for the regression line's slope, which indicates that the actual slope of the model lies between the range [7,532.3, 10,467.7].
To know more about Confidence interval visit
https://brainly.com/question/31736191
#SPJ11
Sarah uses yard of ribbon to make a hair bow.
How many yards of ribbon will Sarah use to make 9 hair bows?
3 yd
6 3/4 yd
7 3/4 yd
9 3/4 yd
Graph the inverse of each function
Please show work will give brainillest
9514 1404 393
Answer:
see attached
Step-by-step explanation:
The graph of the inverse of a function is its reflection in the line y=x. In the attached, that line is shown as a dashed yellow line. The inverse function is shown as a blue line.
__
One way to plot the inverse function of a line is to swap the x- and y-coordinates of the line's intercepts.
In A, the x-intercept is about 10, and the y-intercept is about -4. For the inverse function, the y-intercept will be 10 and the x-intercept will be -4.
In B, the x- and y-intercepts of the function are -6 and 6, respectively. For the inverse function, they will be 6 and -6, respectively.
Answer:
In A, the x-intercept is about 10, and the y-intercept is about -4. For the inverse function, the y-intercept will be 10 and the x-intercept will be -4.
In B, the x- and y-intercepts of the function are -6 and 6, respectively. For the inverse function, they will be 6 and -6, respectively.
Step-by-step explanation:
i got it right on edge
Un número disminuido en 15 equivale a 40.hallar los números
Answer 70
Step-by-step explanation:
Porfavor resolv erme esas preguntas o una :v porfis .El salón de mi clase de matemáticas mide 700 m2, cuánto mide 1/4 del salón? Cuánto mide 3/4 del salón? . Cuántos minutos son 3/5 de media hora? . Se necesitan 4/7 de litro de pintura para pintar un metro cuadrado de pared, si queremos pintar 2/5 de metro cuadrado de pared, cuánta pintura necesitaremos? . Si se necesitan 2/5 de naranja para hacer un vaso de jugo de naranja, cuántas naranjas necesitas para hacer 2 vasos y medio?
Answer:
Explained below.
Step-by-step explanation:
The question is:
Please answer me these questions or one: v please. My math class room is 700 m2, how much is 1/4 of the room? How long is 3/4 of the room? . How many minutes is 3/5 of a half hour? . It takes 4/7 of a liter of paint to paint a square meter of wall, if we want to paint 2/5 of a square meter of wall, how much paint will we need? . If it takes 2/5 of an orange to make a glass of orange juice, how many oranges do you need to make 2 and a half glasses?
(1)
Compute 1/4th of the math class room as follows:
\(=700\times\frac{1}{4}\\=175\)
Thus, 1/4th of the math class room is 175 m².
(2)
Compute 3/4th of the math class room as follows:
\(=700\times\frac{3}{4}\\=525\)
Thus, 3/4th of the math class room is 525 m².
(3)
Compute 3/5th of half an hour as follows:
\(=30\times \frac{3}[5}\\=18\)
Thus, 3/5th of half an hour is 18 minutes.
(4)
A square meter of wall required 4/7 liter of paint.
Then 2/5 of a square meter will require,
\(=\frac{4}{7}\times \frac{2}{5}\\\\=\frac{8}{35}\)
Thus, 8/35 liter of paint will be used to pain /5 of a square meter of the wall.
(5)
1 glass of orange juice can be made using 2/5 of an orange.
Then 2 and half glass will require,
\(=\frac{2}{5}\times 2\frac{1}{2}\\\\=\frac{2}{5}\times \frac{5}{2}\\\\=1\)
Thus, 1 orange will be required to make 2 and half glass of orange juice.
please help me solve
Answer:
18 square centimeters
Step-by-step explanation:
Notice that if e is the midpoint of the side CB, and angle \(\angle x = 45^o\), then this rectangle is in fact two squares of side 3 cm put together. therefore, side CD has a length of 6 cm, and as a result, the area of the figure is given by the product base times height = 6 x 3 = 18 \(cm^2\)
Answer:
(B) 18
Step-by-step explanation:
The angle x is 45 degrees. Since it is bisecting a 90 degree angle, the angle on the other side is 45 degrees.
90 - 45 = 45
Since AB is 3, DC is 3. Since the right triangle DC is 45-90-45, the other side, CE, will also be 3. Since CE is half of the side of the rectangle, multiply it by 2 to get 6. The sides of the rectangle are 3 and 6. Use the formula for area of a rectangle to solve.
A = lw
A = (6)(3)
A = 18
The answer is B.