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2 years ago

5

Help me please :))))

1 answer:

AlladinOne [14]2 years ago

3 0

The answer is 3 beautiful lady

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If (-3)^-5 =1/x, what is the value of x?

iragen [17]

$\bf \left.\qquad \qquad \right.\textit{negative exponents}\\\\
a^{-{ n}} \implies \cfrac{1}{a^{ n}}
\qquad \qquad
\cfrac{1}{a^{ n}}\implies a^{-{ n}}
\qquad \qquad 
a^{{{ n}}}\implies \cfrac{1}{a^{-{{ n}}}}\\\\
-------------------------------\\\\
%(-3)^-5 =1/x,
(-3)^{-5}=\cfrac{1}{x}\implies \cfrac{1}{(-3)^5}=\cfrac{1}{x}\implies 1\cdot x=(-3)^5\cdot 1\implies x=(-3)^5
\\\\\\
x=(-3)(-3)(-3)(-3)(-3)\implies x=-243$

7 0

2 years ago

Wouk out (-5) + (-2)

PolarNik [594]

Answer:

-7

Step-by-step explanation:

-5 + -2 = is the same as -5 - (+2), so the answer is -7

7 0

2 years ago

Read 2 more answers

The number 18 is which percent of 15?<br>A 80% <br>B 83%<br>C 117%<br>D 120%

ANTONII [103]

Answer: D 120%

Step-by-step explanation:

6 0

2 years ago

Amy and Stephanie were playing a number game. Amy picked a number and told Stephanie that if she added 9 to the number and multi

mrs_skeptik [129]

Answer:

A. 2(x + 9) = 8

Step-by-step explanation:

To solve this problem, we proceed as follows:

- We call "x" the number picked up by Amy:

$x$

- Amy then adds 9 to this number, so we get:

$x+9$

- Then, we multiply this sum by 2, so we get:

$2(x+9)$

- Finally, Amy says that this number is equal to 8:

$2(x+9)=8$

So the correct equation is

A. 2(x + 9) = 8

We can even solve it to find the number. We get:

$2(x+9)=8\\2x+2\cdot 9 = 8\\2x+18=8\\2x+18-18=8-18\\2x=-10\\x=\frac{-10}{2}=-5$

5 0

3 years ago

elena-14-01-66 [18.8K]

19/25 or 76/100 so it would be 76%

5 0

3 years ago