Answer:
d.72 cups
Step-by-step explanation:
Since you know that she mixed 3 cups of cereal and 2 cups of trial mix you can set up the equation 3*2 . You will use this to help you figure out the answer.Next you multiply trail mix*cereal. this will give you 3*24 which is 72
A triangle has vartices A(-2,4), B(6,2) and C(1,-1) .prove that ABC is is an isosceles right triangle
Answer:
Triangle ABC has vertices A(0, 0), B(5, 2) and C(7,-3).
Show that ABC is isosceles.
If a triangle has vertices \(A(-2,4), \ B(6,2)\) and \(C(1,-1)\) then \(\triangle ABC\) is an isosceles right triangle.
What is isosceles right triangle?An Isosceles Right Triangle is a right triangle that have two equal sides.
To know whether it is Isosceles Right Triangle or not we will use ,
Distance formula \(= \sqrt{(x_{2} -x_{1})^{2} + (y_{2} -y_{1})^{2}}\)
We have,
Vertices \(A(-2,4), \ B(6,2)\) and \(C(1,-1)\) of \(\triangle ABC\).
So
To find \(AB\) coordinates of \(A\) and \(B\) will be used and so on;
\(AB=\sqrt{(6-(-2))^{2} +(2-4)^2} \ =\sqrt{(8)^2+ (-2)^2} \ = \sqrt{64+4} = \sqrt{68}\)
\(BC=\sqrt{(1-6)^{2} +(-1-2)^2} \ =\sqrt{(-5)^2+ (-3)^2} \ = \sqrt{25+9} = \sqrt{34}\)
\(AC=\sqrt{(1-(-2))^{2} +(-1-4)^2} \ =\sqrt{(3)^2+ (-5)^2} \ = \sqrt{9+25} = \sqrt{34}\)
Here,
\(BC=AC\) which means that two sides of \(\triangle ABC\) are equal i.e. it is isosceles triangle.
And,
Using Pythagoras theorem;
\(AC^2+BC^2=AB^2\)
\((\sqrt{34} )^2+(\sqrt{34} )^2=(\sqrt{68} )^2\)
\(34+34=68\)
\(68=68\)
So, this is satisfying the Pythagoras theorem.
So, this is Isosceles Right Triangle because it is satisfying the Pythagoras theorem and property of isosceles triangle..
Hence, we can say that if a triangle has vertices \(A(-2,4), \ B(6,2)\) and \(C(1,-1)\) then \(\triangle ABC\) is an isosceles right triangle.
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find the quotient 1/5 / (-5/7) =
Answer:
-7/25
Step-by-step explanation:
1/5 ÷ (-5/7)
Copy dot flip
1/5 * -7/5
-7/25
mathmatically indication example with solution
A mathematically indication example would be to solve the equation 3x + 2 = 14 for the value of x. The solution would be 4.
How to solve the equation ?Looking for a mathematically indication example, we can consider a simple mathematical equation with one variable and solve it.
The equation would be 3 x + 2 = 14.
So we can solve for the equation to be :
3x + 2 - 2 = 14 - 2
3x = 12
3 x / 3 = 12 / 3
x = 4
In conclusion, the mathematically indication example would be 3x + 2 = 14 and the value of x would be 4.
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There is a sidewalk of width x around a rectangular garden. If the garden measures twenty-feet by thirty-feet, then the combined area of the garden and sidewalk is
Answer:
Area = 200 + 50 + x
Step-by-step explanation:
Given
Length = 20
Width = 30
Side Walk = x
Required
Determine the area.
To do this we need to get the new worth and length by adding the length of the sidewalk.
This gives:
Length = 20 + x.
Width = 30 + x
So, area becomes.
Area = (20 + x)(30 + x)
Area = 600 + 20x + 30x + x²
Area = 200 + 50 + x²
4. Amy, Betty and Carol have 96 books altogether. Betty has 6 books less than Amy and Carol has half as many as Betty. How many books does each girl have?
The Amy has 42 books, Betty has 36 books, and Carol has 18 books.
Let's set up equations to represent the given information:
Let A represent the number of books Amy has.
Let B represent the number of books Betty has.
Let C represent the number of books Carol has.
Let's say Amy has x books.
Betty has 6 books less than Amy, so Betty has (x - 6) books.
Carol has half as many books as Betty, so Carol has (x - 6)/2 books.
According to the problem, the total number of books they have is 96.
So, we can write the equation:
x + (x - 6) + (x - 6)/2 = 96
To solve the equation, we can simplify it by multiplying through by 2 to remove the fraction:
2x + 2(x - 6) + (x - 6) = 192
2x + 2x - 12 + x - 6 = 192
5x - 18 = 192
5x = 210
x = 42
Amy has 42 books.
Betty has (42 - 6) = 36 books.
Carol has (36)/2 = 18 books.
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HELP QUICKLY PLS
There are 65 boys and 60 girls at a school. Of these students, 26 girls and 19 boys play an instrument. What percent of the students at the school play an instrument?
HELP PLEASEEEEEEE!!!!!
The similar shapes EFGH and JKLM have the measurement of angle Z equal to 65°, the length x = 27.5 and the length of y = 12
What are similar shapesSimilar shapes are two or more shapes that have the same shape, but different sizes. In other words, they have the same angles, but their sides are proportional to each other. When two shapes are similar, one can be obtained from the other by uniformly scaling (enlarging or reducing) the shape.
Given that the shape EFGH is a smaller shape of JKLM, and they are similar, then:
the measure of angle Z is equal to 65°
the side EF corresponds to JK and side FG corresponds to KL, so:
8/20 = 11/x
x = (11 × 20)/8 {cross multiplication}
x = 27.5
the side EF corresponds to JK and EH corresponds to JM, so:
8/20 = y/30
y = (30 × 8)/20 {cross multiplication}
y = 12
Therefore, the similar shapes EFGH and JKLM have the measurement of angle Z equal to 65°, the length x = 27.5 and the length of y = 12
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Consider the following two algorithms which both are meant to print all multiples of 11 from 1 up to a user input positive integer value - upper. Which statement correctly compares the efficiency of these two algorithms?
Algorithm 1:
for (int i = 1; i <= upper; i++)
{
if (i % 11 == 0)
{
System.out.println(i + " ");
}
}
Algorithm 2:
for (int i = 1; i <= upper / 11; i++)
{
System.out.println(i * 11 + " ");
}
Algorithm 2 is more efficient than Algorithm 1 because it only needs to loop through the numbers up to upper/11 instead of upper. This means that it will take fewer iterations to reach the result, making it more efficient than Algorithm 1.
Algorithm 1 will make upper/11 more checks than Algorithm 2, resulting in a slower runtime. Additionally, Algorithm 2 avoids the need to check the modulus of each number, further reducing the computation time. Algorithm 2 only needs to loop through the multiples of 11, which are always 11 apart from each other, so it can skip over the other numbers between them.
This makes Algorithm 2 much faster than Algorithm 1 because it is only looping through a fraction of the numbers.
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The ages of Charlotte and Olivia are in the ratio 6:10. After 10 years, their ratio will become 4:6. Find their ages.
Answer:
Charlotte's age = 30 years
Olivia's age = 50 years
Step-by-step explanation:
Present ages of Charlotte & Olivia = 6:10.
Then, their present ages are:
Charlotte = 6x
Olivia = 10x
Now, in 10 years, their ratio = 4:6
Then,
Ratio of Charlotte's & Olivia's present age + 10 years each = Ratio of their ages in 10 years
\(\frac{6x + 10}{10x + 10} = \frac{4}{6} \\6(6x + 10) = 4 (10x + 10) \: \: \: \: [\mathrm{cross\: multiplication}]\\36x + 60 = 40x + 40\\36x - 40x = 40 - 60\\4x = 20\\\boxed{\bf\:x = 5}\)
So,
Charlotte's present age \(= 6x = 6(5) = {\boxed{\bf\:30 \:years}\)
Olivia's present age = \(10x = 10(5) = \boxed{\bf\:50 \: years}\)
\(\rule{150pt}{2pt}\)
To which number sets of numbers does the number 3.567...belong?
Answer:
It's irrational numberIf the decimal digits do not repeat in some known pattern, then the number is irrational. We cannot write it as a ratio or fraction of two integers. If it did have a pattern, then we can use algebra to find the fractional representation of that number. Based on what is shown, it looks like there is no pattern so that's why the value is irrational. The number is also a real number as this is the case with any number you'll encounter unless you're dealing with complex numbers (but your teacher may not have introduced that topic yet).
give a 92% confidence interval for the mean conductivity, round answer to 4 decimal places. (copy and paste results. make sure your interpretation of the 92% confidence interval is in a complete sentence in the context of the problem.)
The standard deviation of U(4, 92) is 25.4034
Mean
Mean, in mathematics, is a quantity that has a value intermediate between those of the extreme members of some set. Several kinds of means exist, and the method of calculating a mean depends upon the relationship known or assumed to govern the other members.
Standard Deviation
Standard Deviation is a measure that shows how much variation (such as spread, dispersion, spread,) from the mean exists. The standard deviation indicates a typical deviation from the mean. It is a popular measure of variability because it returns to the original units of measure of the data set.
Mean Conductivity
Mean Conductivity is the amount of heat that moves through a slab with a unit cross-sectional area per second. Electrical conductivity is the amount of electricity that flows through a comparable slab per second when the potential gradient is unity.
Mean = (4 + 92)/2 = 48
Standard deviation = (92 - 4)/√12 = 25.4034
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explain the pzx triangle
Answer:
It's a spherical triangle and it's used in astronavigation to determine the observers position on the globe
Step-by-step explanation:
Is that right?
if a and b are consecutive even integers, where aa) 2a+1
b)2a^2+2b
c)3a^2+3b^2
d)2a+3b^2
e)2a+3b
The formula that can be used to illustrate consecutive even numbers is a + 2.
How to illustrate the information?It should be noted that the information is incomplete. Therefore, an overview will be given.
It should be noted that consecutive even numbers we the numbers that follow each other and have a difference of 2.
Examples of such numbers include 2, 4, 6,8, 10, etc.
In this case, the formula that can be used to illustrate consecutive even numbers is a + 2.
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Estimate the slope of the tangent line (rate of change) to f(x) = ² at x = -1 by finding the slopes of
the secant lines through the points:
a. (-2,4) and (0,0)
secant slope, msec=
b. (-1.5, 2.25) and (-0.5, 0.25)
secant slope, msec=
a. The secant slope through (-2,4) and (0,0) is -2.
b. The secant slope through (-1.5,2.25) and (-0.5,0.25) is -2.
The estimated slope of the tangent line to f(x) = x^2 at x = -1 is approximately -2.
To estimate the slope of the tangent line to the function f(x) = x^2 at x = -1, we can find the slopes of the secant lines through different pairs of points.
a. (-2,4) and (0,0):
The coordinates of the two points are (-2, 4) and (0, 0). We can calculate the slope of the secant line passing through these points using the formula:
msec = (y2 - y1) / (x2 - x1)
Plugging in the values, we get:
msec = (0 - 4) / (0 - (-2))
= -4 / 2
= -2
So, the slope of the secant line passing through (-2, 4) and (0, 0) is -2.
b. (-1.5, 2.25) and (-0.5, 0.25):
The coordinates of the two points are (-1.5, 2.25) and (-0.5, 0.25). Using the slope formula, we can calculate the slope of the secant line passing through these points:
msec = (0.25 - 2.25) / (-0.5 - (-1.5))
= (-2) / (1)
= -2
So, the slope of the secant line passing through (-1.5, 2.25) and (-0.5, 0.25) is -2.
By finding the slopes of the secant lines, we have estimated the rate of change of the function f(x) = x^2 at x = -1. The slope of the tangent line at this point will be very close to these secant slopes, particularly as the two points used to calculate the secant lines get closer together.
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i will give brainliest to the right answer:)
Answer:
i gussing add them together
Step-by-step explanation:
A rancher has 200 feet of fencing to enclose two adjacent rectangular corrals. What dimensions should
be used so that the enclosed area will be a maximum?
Length is 33.33 feet and width is 25 feet are dimensions should
be used so that the enclosed area will be a maximum.
What is Area of Rectangle?The area of Rectangle is length times of width
Given that, a rancher has 200 feet of fencing to enclose two adjacent rectangular corrals of the same dimensions.
Here, the dimensions of the rectangles are the same.
The width of the two rectangles is W=2W+2W=4W
The length of the two rectangles is L=L+L+L=3L
Because the adjacent side has a common length.
3L+4W=200
3L=200-4W
Divide both sides by 3
L=(200-4W)/3
Let us form an equation using the area of rectangle formula:
A=2LW
=2(200-4W)/3.W
A=400-8W²/3
Let us differentiate to get the area to be maximized dA/dW=0
1/3×(400-8W²)=0
1/3(400-16W)=0
400-16W=0
400=16W
Divide both sides by 16
W=25
The width is 25 feet.
Substitute W value in equation to get L value:
L=200-4×25/3
=200-100/3
=100/3
=33.33
The length is 33.33 feet.
Now let us find the maximum area
A=2LW
=2×33.33×25
=1666.66
Hence, length is 33.33 feet and width is 25 feet are dimensions should
be used so that the enclosed area will be a maximum.
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Find a rational number between 5/7 and 3/4
Answer:
41/56
Step-by-step explanation:
The LCD is 7×4 = 28. With that denominator, the two fractions are ...
5/7 = 20/28
3/4 = 21/28
The average of the two values will be ...
(5/7 +3/4)//2 = (20 +21)/28/2 = 41/56
_____
Additional comment
5/7 ≈ 0.714285... (6-digit repeat)
3/4 = 0.75
Then numbers like 0.72 = 18/25, or 0.73 = 73/100, or 0.74 = 37/50 will all be between the given fractions.
Of course, any terminating or repeating decimal in that range will also be a rational number. For example, 0.727272727272... = 8/11 will be a rational number in the required range.
which mixed number is equivalent to the improper fraction of 41/10
Answer:
4 1/10 when u have a inproper fraction like that every 10 is one whole number
At 5pm, Li rented bikes from Pearl's
Wheels. She returned the bike at 11pm, after
riding 38 miles: Li paid $26.00 for the
rentals
a. What was her average speed in miles per hour?
b. What was her cost per hour, to the nearest cent?
c. What was her cost per mile, to the nearest cent?
Answer:
(a) 6.33 miles per hour
(b) $4.33 per hour
(c) $0.68 per mile
Step-by-step explanation:
Li drove 6 hours (5pm - 11pm) for a total of 38 miles
\(\textrm{(a) Her average speed is determined by the formula}\\\\\dfrac{\textrm{Distance Travelled}}{\textrm{Time taken for travel}}\)
\(\textrm{So average speed }=$\dfrac{38}{6} = 6.33$ \;\textrm{miles per hour}}\\\\\)
(b) She paid $26 for 6 hours of usage
\(\textrm{So cost per hour } = \dfrac{26}{6} = \$4.33\;\textrm{per hour}\\\\\)
(c) Cost per mile, c, can be computed as follows
\(c = \dfrac{\textrm{Total Cost}}{\textrm{Miles Traveled}}\)
\(\longrightarrow \dfrac{26}{38} = \$0.68\; \textrm{per mile}\)
Mary states, "If the diagonals of a parallelogramare congruent, then the
parallelogram is a rectangle." Decide if her statement is wue or false.
A. True
B. False
Answer:
True
Step-by-step explanation:
A rectangle is a plane figure with congruent length of opposite sides. Considering a rectangle ABCD,
AD ≅ BC (opposite side property)
AB ≅ CD (opposite side property)
<ABC = <BCD = <CDA = <DAC = \(90^{0}\) (right angle property)
Thus,
<ABC + <BCD + <CDA + <DAC = \(360^{0}\)
AC ⊥ BD (diagonals are perpendicular to each other)
AC ≅ BD (congruent property of diagonals)
Therefore, the parallelogram is a rectangle.
A chemical engineer must report the average volume of a certain pollutant produced by the plants under her supervision. Here are the data she has been given by each plant:plantvolume of pollutantPittCross CreekSusquehannaWhat average volume should the chemical engineer report
Answer:
Please find the complete question in the attached file.
Step-by-step explanation:
Total quantities of plant-produced pollutants:
\(=(10.88+15.82+0.92) \ L\\\\=27.62\ L\)
We are three medicinal plants here, Pinecrest, Macon, and Ogala. The average number of contaminants produced by plants would be
\(\to 27.62\div 3 \\\\\to \frac{27.62}{3} \\\\ \to 9.206 \ L\)
-4x(x-a) simplify and remove parenthesis
The simplification of the given expression 4x(x-a) is 4(-x²+a).
What are expressions?A mathematical expression is a phrase that contains a minimum of two numbers or variables and at least one mathematical operation. It is possible to multiply, divide, add, or subtract in math. An expression has the following structure: (Mathematical Operator, Number/Variable, Expression)So, -4x(x-a):
-4x(x-a)-4x² + 4xa4(-x² + a)Therefore, the simplification of the given expression is 4(-x²+a).
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what is the driving time for a 2100-mile trip if you drive at an average speed of 65 miles per hour?
Given data:
The given distance is d=2100-mile.
The given speed is s=65 miles per hour.
The expression for speed is,
\(\begin{gathered} s=\frac{d}{t} \\ t=\frac{d}{s} \end{gathered}\)Substitute the given values in the above expression.
\(\begin{gathered} t=\frac{2100\text{ miles}}{65\text{ miles/hour}} \\ =32.30\text{ hours} \end{gathered}\)Thus, the value of time is 32.30 hours.
Angle TLN equals (3X -18)°, angle MZQ equals (5X +14)° and
For the given figure, x = 23° and y = 129°
Parallel lines:
Parallel lines are lines that always stay the same distance apart and never meet.
Transversal line :
A transversal is a line that crosses two or more other lines.
given,
∠TLN = (3x - 18)°
∠MZQ = (5x + 14)°
∠NLM = y°
Now,
∠MZP + ∠MZQ = 180° (Linear Pair)
∠MZP = 180° - ∠MZQ ...........(I)
again,
∠NLM + ∠TLN =180° ...........(II) (Linear Pair)
As, ∠TLN = ∠MZP (Corresponding Angle)
(3x - 18)° = 180° - ∠MZQ
(3x - 18)° = 180° - (5x + 14)°
3x + 5x = 180° - 14° + 18°
8x = 184°
x = 184 / 8
x = 23°
From (II),
∠NLM + ∠TLN =180°
y° + 3x - 18° = 180°
y = 180 - 3x + 18
= 180 - 3* 23 + 18
= 180 - 69 +18
y = 129°
For the given figure,
x = 23° and y = 129°
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If y=sin^3 x,prove that d^2y/dx^2 - 2 cot x dy/dx +3y=0
The proof of d^2y/dx^2 - 2 cot x dy/dx +3y = 0 is determined as 6cos²xsinx - 3sin³x - 6cos²xsinx + 3sin³x = 0
Equation of the derivativesThe equation is given as;
\(\frac{d^2y}{dx^2} - 2\ cotx \ \frac{dy}{dx} \ + 3y = 0 \ \ ---(1)\)
y = sin³x
First derivative of yy = sin³x
let u = sinx (du/dx = cosx)
y = u³
dy/du = 3u²
\(\frac{dy}{dx} = \frac{dy}{du} \ .\ \frac{du}{dx} \\\\\)
dy/dx = 3u² x cosx
dy/dy = 3sin²xcosx
y' = 3sin²xcosx
Second derivative of yy' = 3sin²xcosx
let u = sin²x (du/dx = 2sinxcosx)
v = cosx (dv/dx = -sinx)
\(y'' = \frac{d^2y}{dx^2} = V\frac{du}{dx} + U\frac{dv}{dx}\)
y'' = 3[cosx(2sinxcosx) + sin²x(-sinx)]
y'' = 6cos²xsinx - 3sin³x
Substitute first derivative and second derivative of y in equation (1)
\(\frac{d^2y}{dx^2} - 2\ cotx \ \frac{dy}{dx} \ + 3y \\\\(6cos^2xsinx \ - \ 3sin^3x) \ - \ 2(\frac{cosx}{sinx} )(3sin^2xcosx) \ + 3(sin^3x) \\\\6cos^2xsinx \ - \ 3sin^3x \ - 6cos^2xsinx \ + \ 3sin^3x = 0 \ \ proved\)
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Rewrite the expression with a single base and exponent. (3^2*3^3)^3
The expression can be rewritten by given term as; 3^15
We need to simplify the expression below:
(3^2 x 3^3)^3
Remember that we can add these exponents, so we get:
(9 x 9)^3 = 81^3
Then we can rewrite this as:
531441
Takin the product between the exponents we will get:
(3^5)^3
Thus, the solution is 3^15
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Explain how to divide 42 by 2 1/3
Answer:
18
Step-by-step explanation:
Answer:
18
Step-by-step explanation:
First, I like to covert 2 1/3 to an improper fraction, 7/3. Then you can do Keep Change Flip. Keep the 42, change divide to multiply and flip 7/3 to 3/7. 42/1 * 3/7 = 18
90
Question 6
Jodie and Mia share 45 sweets in the ratio 2 : 7.
Calculate each person's share.
what is the area of the figure below
Answer:
190 in²
Step-by-step explanation:
Cut the shape into simpler ones:
A=6 x 6= 36 in²
A=7x22= 154 in²
A=36 + 154= 190 in²
Brittany asked her classmates: How much time, in minutes, do you spend reading each day? Here are the results: 10, 20, 20, 20, 30, 30, 30, 30, 30, 40, 40, 40, 60, 60, 60 Display the data in a line plot, a histogram, and a box plot. Next to each graph, write down something you notice about the data. Upload your completed plots here.
The line plot, histogram, and box plot provide different visual representations of the reading time data. By analyzing these plots, we can observe the distribution and characteristics of the data, such as central tendency, spread, and outliers.
Line Plot:
A line plot displays data points on a number line, representing the frequency or count of each value.
In this case, the line plot will show the minutes spent reading on the x-axis and the count of students on the y-axis.
For the given data, the line plot will show 10, 20, 30, 40, and 60 on the x-axis, with the corresponding counts displayed above each value.
Histogram:
A histogram displays data distribution by dividing the range of values into intervals or bins and representing the frequency of values falling into each bin.
The histogram will have the minutes spent reading on the x-axis and the count or frequency of students on the y-axis.
The intervals will be 10-19, 20-29, 30-39, 40-49, and 50-59, with the last interval being 60+.
The height of each bar in the histogram will represent the number of students falling into each interval.
Box Plot:
A box plot (also known as a box-and-whisker plot) provides a visual representation of the distribution of data, including measures of central tendency and variability.
The box plot will show a horizontal line inside a box, with whiskers extending from the box, and possibly individual data points beyond the whiskers.
The box will represent the interquartile range (IQR), showing the middle 50% of the data.
The line within the box will represent the median value.
The whiskers will indicate the minimum and maximum values, excluding outliers.
By analyzing these plots, you can observe the central tendency, spread, and distribution of the reading time data. For example, you can identify any outliers, notice the most common reading durations, and observe any patterns or trends within the dataset.
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