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2 years ago

13

Is -40 the solution to -12=

rac{u}{8}" align="absmiddle" class="latex-formula">-7?

1 answer:

valentinak56 [21]2 years ago

4 0

Answer: Yes -40 is the answer

Explanation:

-12 = u/8 - 7
8(-12)/8 = u/8 - 8(7)/8
-96/8 = u/8 - 56/8
-96 = u - 56
-u = -56 + 96
-u = 40
u = -40

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Replace the ? By < or >

Contact [7]

Answer:

>

Step-by-step explanation:

-3 ? $\frac{19}{5}$

-3 ? -3.8

-3 is greater than -3.8

i.e -3 > -3.8

3 0

3 years ago

What is f–1(8)??<br><br> Please select the best answer

notka56 [123]

Answer:

$f^{-1}(8)=\frac{3}{2}$

Step-by-step explanation:

Given f(x)= $2x+5$

We have to find $f^{-1}(8)$

In order to find $f^{-1}(x)$ we have to make x as the subject of the formula

Let us assume f(x)=y

⇒ $2x+5=y$

Subtracting both sides by 5

$2x+5-5=y-5$

$2x=y-5$

Dividing both sides by 2

$\frac{2x}{2}=\frac{y-5}{2}$

⇒ $x=\frac{y-5}{2}$

Now substituting y with x

we have $f^{-1}(x)=\frac{x-5}{2}$

Now $f^{-1}(8)=\frac{8-5}{2}$

= $\frac{3}{2}$

So option (ii) is correct

5 0

2 years ago

Read 2 more answers

Write the answer with the correct number of significant digits. Don't use any commas in your answer. Only use a

lawyer [7]

386 x 21 = 8.106

I hope you got a good grade on your assignment!!! :D

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2 years ago

I need help with this question

Murljashka [212]

It is the third on down

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2 years ago

Which ratio is equivalent to 9/27<br><br> A. 6/9<br><br> B. 1/2<br><br> C. 1/3<br><br> D. 3/12

shusha [124]

The correct answer is c.

a.6/9

b.1/2

<em><u>c.1/3</u></em>

d.3/12

8 0

3 years ago