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3 years ago

7. Meghan said the opposite of the sum of -12 and 4 is 8. Do you agree? Why or why not?

Mathematics

1 answer:

muminat3 years ago

8 0

I agree, the sum of -12 and 4 is -8. so, the opposite of that would be positive 8.

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Answer choices are 14 24 28 48

MrRa [10]

Answer: 24 square units

Step-by-step explanation:

It appears the shaded area of the rectangle is half of the rectangle's area. This means if we find the area of the rectangle and divide it by 2 we will know the area of the shaded portion.

The formula for the area of a rectangle is $lw=A$

Where

l is the length (8 for this)

w is the width (6 for this)

A is the area

However, since we are finding half the area we will divide lw by 2

Sub the values into the formula

$\frac{lw}{2} =A\\\frac{(8)(6)}{2} =A\\\frac{48}{2} =A\\24=A$

4 0

2 years ago

Amy drives her car until the gas gauge is down to 1/8 full, then she fills the tank to capacity by adding 14 gallons. What is th

Kazeer [188]

Answer:

Amy's car tank capacity is 16 gallons.

Step-by-step explanation:

Let the capacity of the tank be 'x'

Given:

Amount of gas in the car till it is refilled = $\frac{1}{8}\times x = \frac{1}{8}x \ gallons$

Amount of gas added = 14 gallons.

We need to find the capacity of the tank.

Solution:

Now we can say that

Total Capacity of the tank is equal to sum of Amount of gas in the car till it is refilled and Amount of gas added.

framing in equation form we get;

$x=\frac{x}{8}+14$

Combining the like terms we get;

$x-\frac{x}{8}=14$

Now making the denominators common we will use L.C.M.

$\frac{8x}{8}-\frac{x\times1}{8\times1}=14\\\\\frac{8x}{8}-\frac{x}{8}=14\\\\\frac{8x-x}{8}=14\\\\\frac{7x}{8}=14$

Now multiplying both side by 8 we get;

$\frac{7x}{8}\times 8=14\times8\\\\7x = 112$

Now dividing both side by 7 we get;

$\frac{7x}{7}=\frac{112}{7}\\\\x=16\ gallons$

Hence Amy's car tank capacity is 16 gallons.

8 0

3 years ago

A sociologist is doing a study on journalists. He attends a journalism conference, where he randomly surveys 390 journalists abo

Natasha2012 [34]

If it’s referring to 137 out of 1700, divide 137 by 1700 and multiply by 100. same for the other, except you divide 137 by 390.

6 0

2 years ago

Set up iterated integrals for both orders of integration. Then evaluate the double integral using the easier order. y dA, D is b

Yuliya22 [10]

Answer: The answer is 183.08

Step-by-step explanation: see the picture attached

7 0

3 years ago

How do I work out the answer 4+1/4x+3=10

Rzqust [24]

Answer:

I believe it would be 5/7x=12

Step-by-step explanation:

First I took the 4 and 1 and added that give me 5 after, I did 4x plus 3 and that’s 7 so I added on the x and last I put equal 12 because if I add that all up that is 12

3 0

3 years ago

Read 2 more answers