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gayaneshka [121]
3 years ago
14

What is the right answer to this question (2x-5) (x+2)

Mathematics
1 answer:
Tpy6a [65]3 years ago
3 0

Answer:

2x² - x - 10

Step-by-step explanation:

Given

(2x - 5)(x + 2)

Each term in the second factor is multiplied by each term in the first factor, that is

2x(x + 2) - 5(x + 2) ← distribute both parenthesis

= 2x² + 4x - 5x - 10 ← collect like terms

= 2x² - x - 10

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Find the inverse please and thank you
Amanda [17]

The inverse f^{-1}(x) is such that

f\left(f^{-1}(x)\right) = x

We have

f\left(f^{-1}(x)\right) = -9\sqrt{f^{-1}(x) - 8} + 5 = x

Solve for the inverse.

-9\sqrt{f^{-1}(x)-8} + 5 = x \\\\ -9\sqrt{f^{-1}(x)-8} = x-5 \\\\ \sqrt{f^{-1}(x)-8} = -\dfrac{x-5}9 \\\\ \left(\sqrt{f^{-1}(x)-8}\right)^2 = \left(-\dfrac{x-5}9\right)^2 \\\\ f^{-1}(x) - 8 = \dfrac{(x-5)^2}{81} \\\\ \boxed{f^{-1}(x) = 8 + \dfrac{(x-5)^2}{81}}

5 0
2 years ago
Please Help!!! URGENT
NeX [460]

Answer:

i think its #1.

Step-by-step explanation:

Im sorry if its wrong! I really don't do this stuff often...

5 0
3 years ago
MATH HOMEWORK HELP PLEASE
mojhsa [17]

Answer:

b

Step-by-step explanation:

6 0
3 years ago
What is the volume?<br> 6<br> ft.<br> 6 ft<br> 6ft
ryzh [129]

Answer:

V=216 ft cubed

Step-by-step explanation:

V=L*W*H

V=6*6*6

V=6*6=36

V=36*6

V=216

5 0
4 years ago
Please Help me out on N, I got the other's but i need N please.
shtirl [24]

Answer:

Step-by-step explanation:

b). Since relation between the number of spring rolls and number of people is,

Number of spring rolls ∝ Number of people

Therefore, Number of spring rolls (R) = k × Number of people (P)

With the help of this proportional relation,

If the number of spring rolls (R) are 6 and the number of people (P) are 3.

6 = 3k

k = 2

So the equation that defines the relation will be,

R = 2P

a). For R = 1,

1 = 2P ⇒ P = 0.5

For R = 10,

10 = 2P ⇒ P = 5

For R = 16,

16 = 2P ⇒ P = 8

For R = 25,

25 = 2P ⇒ P = 12.5

For R = n,

n = 2P ⇒ P = \frac{n}{2}

5 0
4 years ago
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