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3 years ago

Which expression is equivalent to (10 + 7r-r?) + (-6r2-18 + 5r)?

Mathematics

2 answers:

Tom [10]3 years ago

8 0

H is the correct answer. After combining all the like terms that’s the answer you get.

vitfil [10]3 years ago

4 0

Answer:

Step-by-step explanation:

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HEY! HELP PLEASE, ASAP!! THANKS SO MUCH!!!!

inysia [295]

Answer: I think its b

Step-by-step explanation:

4 0

3 years ago

What is the solution to this

sergeinik [125]

Answer:

D.) 8x^2+11x-9

Step-by-step explanation:

5x^2 -(-3x^2) =8x^2

7x -(-4x) =11x

-4 -5 =-9

Hope it helps

4 0

3 years ago

Put the measurements from largest to smallest?

Sholpan [36]

Kilogram
decagram
gram
decigram
milligram

5 0

3 years ago

Read 2 more answers

Given, f(x) = 2x + 7 Find f(3)

Elina [12.6K]

Answer:

f(3) = 13

Step-by-step explanation:

f(x) = 2x + 7

replace x with 3

f(3) = 2×3 + 7

= 6 + 7

= 13

8 0

3 years ago

The solid surface area is equal to the solid volume. Find the value of x? The measurements of the rectangular prism is 9 inches

Fudgin [204]

Answer:

$x=7.2$

Step-by-step explanation:

Let x represent height of the prism.

We know that volume of rectangular is equal to product of its height, width and length.

$\text{Surface area of rectangular prism}=2(wl+lh+hw)$ , where w, h and l represents width, length and height respectively.

We have been given that the surface area of rectangular prism is equal to the volume of the prism. So we can set an equation as:

$lwh=2(wl+lh+hw)$

We are also told that the measurements of the rectangular prism is 9 inches long and 4 inches wide. Upon substituting these values in above equation, we will get:

$9\cdot 4\cdot x=2(4\cdot 9+9\cdot x+x\cdot 4)$

Let us solve for x.

$36x=2(36+9x+4x)$

$36x=2(36+13x)$

$36x=72+26x$

$36x-26x=72+26x-26x$

$10x=72$

$x=\frac{72}{10}\\\\x=7.2$

Therefore, the value of x is 7.2 inches.

6 0

3 years ago