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3 years ago

What’s the value of c in the equation 7x+2y=48, when y=3

Mathematics

1 answer:

Naya [18.7K]3 years ago

6 0

There is no c in this equaltion

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Please help me explain as well. AD is 48. I will give brainliest.

otez555 [7]

Answer:

The area of the rectangle is 48

Step-by-step explanation:

We know that AE is 6 and ED is 8, since it forms a triangle, use the Pythagorean theorem to find AD, which is one side of the rectangle.

The Pythagorean theorem says that a^2 + b^2 = c^2.

a is AE, b is ED, and c is AD, so 6^2 + 8^2 = c^2, 36 + 64 = c^2, 100 = c^2, 10 = c, so AD is 10

The area of the triangle is half of AE times ED, so 1/2(6)(8) = 1/2(48) = 24, the area of the triangle is 24.

Since the area of a triangle is 1/2 of the base times the height, we can figure out the height:

A = 1/2bh, 24 = 1/2(10)h, 24 = 5h, 4.8 = h, so the height of the triangle (and rectangle) is 4.8.

The height of the triangle is also the height of the rectangle:

The area of the rectangle is 4.8*10 = 48

8 0

3 years ago

NEED DESPERATELY. PLEASE!!! A BIG REWARD IS AT STAKE. BRAINLIEST WILL BE GIVEN. (Keep out for more problems with rewards from me

Rom4ik [11]

Answer:

My total savings was = $58.33

Step-by-step explanation:

Given:

12% of my savings was = $7.00

To find my total savings.

Solution:

Let the total savings in dollars be = $x$

12% of the total savings will be = $12\%\ of\ x$

12% of my savings was = $7.00

So, we have:

$12\%\ of\ x=7$

$0.12x=7$

Solving for $x$ to get my total savings.

Dividing both sides by 0.12

$\frac{0.12x}{0.12}=\frac{7}{0.12}$

∴ $x=58.33$

Thus, my total savings was = $58.33

7 0

3 years ago

Solve the equation. 9x−(3x+9)=2x−25 Select the correct choice below and fill in any answer boxes in your choice. A. The solution

nataly862011 [7]

Answer: Choice A, x=-4

Step-by-step explanation:

1. 9x−(3x+9)=2x−25

2. 9x-3x-9=2x-25

3. 6x-9=2x-25

4. 6x-9=2x-25

-2x -2x

5. 4x-9=-25

+9 +9

6. 4x=-16 (divide both sides by 4)

7. x=-4

7 0

3 years ago

If x > 0 and y < 0, where is the point (x, y) located?

dlinn [17]

Answer:

Quadrant 4

Step-by-step explanation:

x > 0 means towards right of the origin

y < 0 means below the origin

So Quadrant 4

6 0

3 years ago

How to determine if a function is even or odd calculus?

aalyn [17]

A function $f(x)$ is even if $f(-x)=f(x)$ , and is odd if $f(-x)=-f(x)$ .

Example:

$f(x)=x^2$ is even, since $f(-x)=(-x)^2=x^2=f(x)$ .

$g(x)=x^3-x$ is odd, since $g(-x)=(-x)^3-(-x)=-x^3+x=-(x^3-x)=-g(x)$ .

6 0

3 years ago