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3 years ago

PLEASE i need the answers!!!!!!!!!

Mathematics

1 answer:

Tema [17]3 years ago

3 0

Answer:

5x^2(2-3x)

(n+4)(x+y)

Step-by-step explanation:

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Which is the ordered pair for the translated point D'?

olga_2 [115]

$(x;\ y)\\\\D(-3;\ 1)\\\\right(+),\ left(-)\to x\\up(+),\ down(-)\to y\\\\left\ 4\to-3-4=-7\\up\ 0\to1+0=1\\\\Answer:\boxed{D.\ (-7;\ 1)}$

7 0

3 years ago

Read 2 more answers

The length of a rectangle is three inches more than the width. the area of the rectangle is 180 inches. find the width of the re

ch4aika [34]

We have a rectangle with length L that is 3 inches more than the width W. Then we can write this as:

$L=W+3$

The area of the rectangle is 180 square inches.

We have to find the width W.

As the area is equal to the product of the length and the width, we can write this equation and solve for W as:

$\begin{gathered} A=180 \\ L\cdot W=180 \\ (W+3)\cdot W=180 \\ W^2+3W=180 \\ W^2+3W-180=0 \end{gathered}$

We have a quadratic equation. The roots of this equation will be the mathematical solutions.

We can find the roots using the quadratic formula:

$\begin{gathered} W=\frac{-b\pm\sqrt[]{b^2-4ac}}{2a} \\ W=\frac{-3\pm\sqrt[]{3^2-4\cdot1\cdot(-180)}}{2\cdot1} \\ W=\frac{-3\pm\sqrt[]{9+720}}{2} \\ W=\frac{-3\pm\sqrt[]{729}}{2} \\ W=\frac{-3\pm27}{2} \\ W_1=\frac{-3-27}{2}=-\frac{30}{2}=-15 \\ W_2=\frac{-3+27}{2}=\frac{24}{2}=12 \end{gathered}$

The solutions are W = -15 and W = 12.

The first one is not valid, as W has to be greater than 0.

Then, the solution to our problem is W = 12 in.

Answer: the width is W = 12 inches.

6 0

1 year ago

If 3,200 cars were sold all year, how many cars were sold in the jan/feb period?

Kobotan [32]

12 months per year

3200/12 = 266.66 per month

jan/feb = 2 months

266.666 x 2 = 533.33 round off to 533 cars sold

5 0

4 years ago

Read 2 more answers

cassie is training for a marathon. she has been recording her miles in a journal leading up to race day. the following table sho

Umnica [9.8K]

Answer: There are a lot of possibilities

- she was taking a break

- she forgot

- she was too busy

- she was injured

- she didn't want to

- there was an emergency

I guess you could pick your favorite...

8 0

3 years ago

2. A piece of string 42 centimeters long is cut into 2 unequal pieces. The longer

Vaselesa [24]

Answer: 28 cm

Step-by-step explanation:

x - the length of the shorter piece

2x - the length of the longer piece

Together they are 42 cm long.

Compose te equation:

2x + x = 42

3x = 42

x = 14 cm

The shorter piece is 14 cm, the longer piece is twice longer, 2x, or 2( 14 ).

Two times longer than 14 is 28. The longer piece is 28 cm.

4 0

3 years ago