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katovenus [111]
3 years ago
6

A rectangle has a height of 3 and a width of 2x^2+3x-5 express the area of the rectangle

Mathematics
1 answer:
Inessa [10]3 years ago
6 0

Answer:

6x²+ 9x- 15

Step-by-step explanation:

To find the area of a rectangle multiply length and width.

3(2x²+ 3x-5)

Use the distributive property to solve.

3(2x²)= 6x²

3(3x)= 9x

3(-5)= -15

The area would be

6x²+ 9x- 15

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A window in the shape of a rectangle as shown below has a width of x+5 and a length of x^2- 3x+7 express the area of the rectang
Ksju [112]

Answer:

x^3+x^2-5x+28

Step-by-step explanation:

since a=lw, the area is (x^2-3x+7)(x+4)

1. distribute parentheses \left(x^2-3x+7\right)\left(x+4\right)=x^2x+x^2\cdot \:4+\left(-3x\right)x+\left(-3x\right)\cdot \:4+7x+7\cdot \:4

2. apply +(-a)=-a rule x^2x+4x^2-3xx-3\cdot \:4x+7x+7\cdot \:4

3. Simplify

    Steps to simplify:

x^2x=x^3

3xx=3x^2

3\cdot \:4x=12x

7\cdot \:4=28

x^3+4x^2-3x^2-12x+7x+28

4. Add like terms =x^3+4x^2-3x^2-5x+28

5. Add like terms =x^3+x^2-5x+28

6 0
3 years ago
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4 0
3 years ago
A square field has an area of 100 square meters. What is the length of the square? Show how you got the work please.
Goryan [66]

Answer:

The length of the square is 10 meters.

Step-by-step explanation:

First, you need to know that a square has four equal sides, and that finding the area of a square means multiplying one side by another side. This means that if you know the area of the square, all you have to do is find the square root of the area to find a side length. So, by using a calculator, you can find that the square root of 100 is 10, which is the length of one side of the square.


8 0
3 years ago
Read 2 more answers
Should i give up with math it to hard and i try every time
bekas [8.4K]

Answer:

No as hard as math is it’s a great feeling when you get that “OHH I GET IT” moment. And plus if your in school your kinda. Stuck with it anyway

Step-by-step explanation:

6 0
2 years ago
HELPPP!!!!!!!!!!!!!!!!
Neko [114]

Answer:

B

Step-by-step explanation:

Because of the exponent in x²

5 0
3 years ago
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