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Emi computes the mean and variance for the population data set 87, 46, 90, 78, and 89. She finds the mean is 78. Her steps for finding the variance are shown below.

What is the first error she made in computing the variance?
A.) Emi failed to find the difference of 89 - 78 correctly.
B.) Emi divided by N - 1 instead of N.
C.) Emi evaluated (46 - 78)2 as -(32)2.
D.) Emi forgot to take the square root of -135.6.

Answer:

Drinks = $1.5

Pizza = $10.50

Step-by-step explanation:

let d = drinks

p = pizza

p = 7d  equation 1

2p + 8d = 33 equation 2

from equation 1, we know the price of one pizza, the price of two pizzas can be determined by multiplying by 2

2p = 7d x 2 = 14d  eqn 3

Substitute for 2p in equation 2  

14d + 8d = 33

22d = 33

Divide both sides of the equation by 22

d = $1.5

Substitute for d in equation 1

p = 1.5 x 7 = $10.5

Answer:$175

Step-by-step explanation:

The amount of his paycheck would be $ 784.

The solution of an equation refers usually to the values of the variables involved in that equation which if substituted in place of those variable would give a true mathematical statement.

WE have been given that Josh used one hundred dollars less than three-fourths of his paycheck to buy a new N the cost of the new TV was $488.

Let P = pay amount

3/4 P  -100  = 488    

Now add 100 to both sides of the equation

3/4 P  = 588            

Then multiply both sides of the equation by 4/3;

P =  $ 784

The amount of his paycheck would be $ 784.

Learn more about solving equations here:

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Answer:

quadrilateral and parallelogram

Step-by-step explanation:

since it has 4 sides and 4 angles it is quadrilateral and since there are two sets of parallel lines connected and each pair has different lengths, it should be parallelogram

8x^3y^4. Gotchu homie. Lmk if anything is wrong

Answer:

Step-by-step explanation:

54.[tex]r=\sqrt{\frac{V}{πh} } =\sqrt{\frac{1256}{π100} } =2[/tex]\

55. H

56. A

Answer:

3.1

Step-by-step explanation:

Answer:

assuming that 2:7 math classes daily means that they have 2 math classes out of 7 classes daily, then after 21 days they would have 42 math classes.

*X can not be found, only simplified or factored)

5x+33+17x+37

Add the x units

22x+33+37

Add the 33 and 37

22x + 70

Subtract 77 to the other side

Simplify: 22x = -70

Factor: 2(11x+35)

Answer: 2.1 Pints

Step-by-step explanation:

Given

Areli uses 8.4 Pints of blue and White Paint

If the three-fourth is blue paint i.e.

[tex]\Rightarrow 8.4\times \dfrac{3}{4}=6.3\ \text{Pints}[/tex]

The remaining one-fourth is White Paint i.e.

[tex]\Rightarrow 8.4\times \dfrac{1}{4}=2.1\ \text{Pints}[/tex]

Answer: V=17,000 times (0.8)^t

Step-by-step explanation:

Answer:

27/238 = n/100

Step-by-step explanation:

Answer:

270 minutes in all

Step-by-step explanation:

First, if we know that Deena spent 45 min painting, and that Clara spent 30 min more, than to find how much Clara painted you do 45 + 30 which equals 75. To find Adam, you do 75 x 2 which = 150.

150 + 75 + 45 = 270

Hope this helps!

Answer:

Sin A = 5/13; tan C = 12/5

Step-by-step explanation:

Sin = opposite / hypotenuse. The opposite of A is 5, and the hypotenuse is 13, therefore Sin A = 5/13.

Tan = opposite / adjacent. The opposite of C is 12, and the adjacent is 5, so tan C = 12 / 5

Answer:

1.) 1/4

2.) 5/12 i am not sure about this one

Step-by-step explanation:

1.) Chance of tales:

Chance of even number: 3/6 or 1/2

Multiply: (1/2)(1/2) = 1/4

Answer:

Step-by-step explanation: -8 - - 158= 5

=>5m=150

=>m=30

Step-by-step explanation:

1. Rearrange term

-158=-8-5m

-158=-5m -8

2. Add 8 to both sides of the equation

-158=-5m -8

-158+8=-5m -8=8

3. Simplify

-158+8=−5m−8+8

−150=−5m-8+8

−150=−5m−8+8

−150=−5m

4. Divide both sides of the equation by the same term

−150=−5m

−150=−5m

-5         -5

5. Simplify

... I am getting tired so, I am going to skip to the answer

ANSWER

m=30

Answer:

Step-by-step explanation:

One coin

Answer:

i think 1/10

Step-by-step explanation:

Answer:

The bank is what pays you interest.

Step-by-step explanation:

This is because when you put money in a savings account, the bank is technically borrowing the money and paying you interest in return.

Step-by-step explanation:

Step 1: On the horizontal axis, we can choose the scale to be 1 unit = 11 lb.Since the weights in the table start from 65, not from 0, we give a break/kink on the X-axis. Step 2: On the vertical axis, the frequencies are varying from 4 to 10.Thus, we choose the scale to be 1 unit = 2.

Answer:

your work is hard

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer: x > 14

m a th way can help with any similar questions like this !!

Answer:

10 times

Step-by-step explanation:

can i get brainly

If we go through it logically, it is only 1 time.

Step-by-step explanation:

Hope this helps

Answer:

You have my profile picture

Step-by-step explanation:

Answers:

1. The volume of the carry-on baggage check box is 2772 inches³

2. The volume of the leather bag is 1728 inches³.

3. The volume of the canvas bag is 2700 inches³.

4. The leather bag will definitely fit into the check box.

Hope this helps!

When answering, make sure to put the units, which is inches cubed, which you always use for finding the volume of a figure.

Happy learning,

Applepi101

Answer:

70° and 110° .

Step-by-step explanation:

Answer:

y = -1/4x -1

Step-by-step explanation:

Mathematically, we have the slope intercept form as;

y = mx + b

where m is the slope and b is the y-intercept

from the question;

m is -1/4

So we have :

y = -1/4x + b

To get the value of b, we substitute the coordinates given and solve for b

Firstly, multiply through by 4

That will

give ;

4y = -x + 4b

4(-4) = -12 + 4b

-16 = -12 + 4b

-16 + 12 = 4b

4b = -4

b = -4/4

b = -1

So the equation in the slope intercept form is;

y = -1/4x -1

The diagram that models the ratio in the story is diagram A.

When fifi weighs 56 pounds, Buttercup will weigh 8 pounds.

It should be noted that ratio demonstrates how many times one number can fit into another number. It contrast two numbers by ordinarily dividing them. A/B will be the formula if one is comparing one data points.

Let buttercup be x

Let Fifi be 7x

Fifi weighs 56 pounds. This will be:

7x = 56

7x = 56

Divide

x = 56 / 7

x = 8

Buttercup is 8 pounds.

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Answer:

6.75

Step-by-step explanation:

hope it helps mark as brainliest

Answer:

$6.75

Step-by-step explanation:

Take $45 by .15 and multiply them. You will get $6.75

Answer:

No, it is a right triangle because it has a 90 degree angle

Answer: 13

Step-by-step explanation:

pythagorean theorem: a^2+b^2=c^2

plug in values: 5^2+12^2=c^2

solve:

5^2+12^2=c^2

25+144=c^2

169=c^2

13=c