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3 years ago

What expression is equivalent to 9^-2

Mathematics

2 answers:

FinnZ [79.3K]3 years ago

7 0

1÷81 because you square it

shusha [124]3 years ago

3 0

9^ -2 = 1/9^2 = 1/81

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Just started ratio, I need some help, please!

spayn [35]

Answer:

The answer would be B.

Step-by-step explanation: It is this answer because if it asks you 1 to 5, that means it is one, and then to 5.

Hope this answer helps!

6 0

3 years ago

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The regression equation y = -0.414x + 106.55 approximates the percent of people in an

murzikaleks [220]

The correct option will be: A. 67%

Explanation

Given equation is: $y = -0.414x + 106.55$ , where $x$ is the length of the film in minutes and $y$ is the percentage of people finish watching the film.

Here, the length of the documentary is given as 95 minutes. So, we will plug $x=95$ into the above equation and get....

$y=-0.414(95)+106.55\\ \\ y=-39.33+106.55\\ \\ y=67.22 \approx 67$

(Rounded to the nearest percent)

So, the percentage of people in an audience who will finish watching a documentary that is 95 minutes long will be 67%

4 0

3 years ago

What is the sum of the first 40 odd integers greater than zero?

marusya05 [52]

The answer you are looking for is 339

5 0

3 years ago

PLEASE HELP ME I NEED THIS ANSWER FOR ALGEBRA!

Marizza181 [45]

Answer:

$radius = 6.2$

Step-by-step explanation:

so you already have the formula, which is

$\sqrt[3]{ \frac{3v}{4\pi} }$

the v represents Volume.

and 3v would be 3×volume.

$\sqrt[3]{ \frac{3 \times 1000}{4 \times \pi} }$

$\sqrt[3]{ \frac{3000}{12.56637061} }$

$\sqrt[3]{238.7324147 }$

$= 6.20350491$

to the nearest tenth place.

$= 6.2$

4 0

3 years ago

The equation for the circle below is x2 + y2 = 100. what is the length of the circle's radius?

stealth61 [152]

X²+y² =(Radius)²

x²+y² =10². So the radius is 10

4 0

3 years ago

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