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posledela
3 years ago
9

What expression is equivalent to 2(3a+2b-7)

Mathematics
1 answer:
agasfer [191]3 years ago
4 0

Answer:

6a+4b-14

Step-by-step explanation:

Distributive property. Multiply everything in the parenthesis by the number outside.

So you get

2 times 3a = 6a

2 times 2b = 4b

2 times-7 = -14

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The length of a rectangle is (x+5) and the width is (x+2). The area of the rectangle is 70 square feet. What is the length of th
vaieri [72.5K]

Answer:

The length of the rectangle is 30 feet.

Step-by-step explanation:

Because the equation for area is length times width, you would have to set the two equations to seventy and multiply them.

<em>     (x+5) (x+2) = 70</em>

<em>     </em><em>2x + 10 = 70</em>

Then, you would have to subtract ten from both sides, cancelling it from the left side.

<em>     2x = 60</em>

<em />

Then do the opposite and divide sixty by two, therefore getting a length of thirty feet.

7 0
3 years ago
4. Elliott deposits $500 into a savings account
Len [333]

Interest = 500 x .03 x 4

I = 60

Closing Balance = 500 (p) + 60 (1)

Closing Balance = 560

7 0
3 years ago
A dinner table is a perfect circle with a diameter of 8 feet
Daniel [21]

Answer:

The area of the tablecloth showing is approximately 45.55 square feet

Step-by-step explanation:

The diameter of the dinner table, D = 8 feet

The diameter of each plate, d = 1 feet

The number of people at the dinner table = 6 people

The number of plates = 6 plates

The area of the table cloth, A₁ = π·D²/4

∴ A₁ = π × 8²/4

The area covered by the 6 plates, A₂ = 6·π·d²/4

A₂ = 6 × π × 1²/4

Let 'A' represent the area of the tablecloth showing when the table is set for six people, we have;

A = A₁ - A₂

∴ A = π × 8²/4 - 6 × π × 1²/4 ≈ 45.55 ft.²

The area of the tablecloth showing when the table is set for six people, A ≈ 45.55 ft.²

8 0
3 years ago
2x-5y=-28 find the value of y when x equals -19
nydimaria [60]
<h3>Question:</h3>

2x-5y=-28 find the value of y when x equals -19

<h3>Answer:</h3>

Y = - 2

<h3>Step-by-step explanation:</h3>

First you plug in -19 where x is 2(-19)-5y = -28

Remove parentheses               -2 · 19-5y= -28

Multiply -2 by 19                       -38-5y= -28

Add 38 to both sides               -5y = 10

Divide both sides by -5            [tex]\frac{-5y}{-5} =\frac{10}{-5}[/tex

you will get -2 which is the answer.


Hope this helped!


8 0
3 years ago
Read 2 more answers
What is the answer to 3X - 5=16
sineoko [7]
The answer is x=7. I hope this helps. Tell me if you need an explanation!
7 0
3 years ago
Read 2 more answers
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