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3 years ago

Please help me, and if you answer explain how you got it because i'm having trouble understanding.

Mathematics

1 answer:

morpeh [17]3 years ago

8 0

Step-by-step explanation:

Area: (2x - 7) * (3*2 + 4x)

(2x - 7) * (6 + 4x)

8x-42

Perimeter: 2(2x - 7) + 2(3*2 + 4x)

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umka2103 [35]

Answer:

The answer is -3

Step-by-step explanation:

First of all we find the difference -4-2 = -(4+2) and than we add the numbers answer is -6 .

$- \frac{6}{4 \div 2}$

4÷2=

$- \frac{6}{2}$

And than we simplify this fraction to 2 and find the answer -3. I would be glad if you choose my answer the best. Good lessons ♡

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3 years ago

Solve each prportion. (2/y-4)=(y+3/4)

vampirchik [111]

Answer:

y = 5, -4

Step-by-step explanation:

To solve proportions you cross-multiply.

$\frac{2}{y-4} =\frac{y+3}{4} \rightarrow 2\times4 = (y-4)\times(y+3) \rightarrow 8=y^2-y-12$

Now that we have 8 = y^2 - y - 12, we must make the entire trinomial equal to 0 by subtracting 8 from both sides.

y^2 - y - 20 = 0

Factor the trinomial.

(y - 5)(y + 4) = 0

Make both factors equal to 0 to solve for both values of y.

y - 5 = 0 --> y = 5
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y = 5, -4

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3 years ago

A 9 kilogram bag of animal feed costs $45. What is the unit price per kilogram?

kotykmax [81]

The unit price per kg is $5, to find this divide the 9 kilograms into the price $45 the answer is what each kilogram is worth

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3 years ago

Lin took 75 boxes of carrots and 80 boxes of potatoes to the market. She sold 68 boxes of carrots and 71 boxes of potatoes. How

Ugo [173]

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gizmo_the_mogwai [7]

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