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adelina 88 [10]
3 years ago
13

This is for homework

Mathematics
1 answer:
zalisa [80]3 years ago
5 0

Answer:

What grade is this?

Step-by-step explanation:

I don't understand.

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Twice the sum of a number and negative nine
Mice21 [21]
2(x+-9)
2(x-9)
Distribute
2x-18 is the simplified expression
3 0
3 years ago
Solve for x . Leave your answer in the simplest form
Alisiya [41]

Hello!

Here we are given a composite shape, meaning that we can divide this shape up into ways that we are given formulas to solve for legs and such.

I can see here that this can be divided into a triangle and a rectangle using a horizontal line.

The leg lengths of this triangle would be 9, because it is congruent to the bottom side of the rectangle, and 7, because it is the left side minus the right side.

This would also make a right triangle, meaning we could solve for the hypotenuse utilizing the Pythagorean Theorem.

a^2+b^2=c^2

6^2+7^2=c^2

36+49=c^2

c^2=85

c=\sqrt{85}

Which is in simplest radical form.

Hope this helps!

3 0
3 years ago
Thank you!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
stiks02 [169]

Answer:

your welcomeeeeee!!!

7 0
3 years ago
Read 2 more answers
Please help me .
Margarita [4]

Answer:

(2x + 3)(x - 2)

Step-by-step explanation:

use FOIL

First, Outside, Inside, Last

2x x x = 2x²

2x x -2 = -4x

3 x x = 3x

3 x -2 = -6

2x² - 4x + 3x - 6

5 0
3 years ago
Marco's mom has measured his height in centimeters every few months between the ages of 4.5 and 7.5. The recorded values are bes
Contact [7]

Answer:

Extrapolation

Step-by-step explanation:

Extrapolation is a type of estimation, beyond the original observation range. In this case, the observation range is from 4.5 to 7.5 years. Marco's mom is extrapolating the regression line to estimate Marco's height at 14 years old. This sort of estimation assumes that Marco's height will continue changing at the same rate until he is 14 years old.

7 0
3 years ago
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