Use rousing or compatible numbers tu estimate the sum 87+34

1 answer:

3 0

Well, it gives you a 2nd option in which you can use, compatible is a much easier word to understand and it means the two numbers are <span>able to existur together without conflict (google definition)

hopefully it helps?</span>

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Factor each expression completely.<br> 5x^2 + 10x<br><br> SHOW YOUR WORK!!!

Snowcat [4.5K]

5x^2+10x

factorise 5 and 10 first
then factorise the x

so 5x(x+2)
completed :))

hope this helped :)

8 0

3 years ago

A manufacturer knows that their items have a normally distributed lifespan, with a mean of 7.9 years, and standard deviation of

Darya [45]

If you randomly purchase one item, the probability it will last longer than 9 years is; 11.12%

<h3>How to find the probability from z-score?</h3>

The formula for Z-score is;

z = (x' - µ)/σ

where;

x' = sample mean

µ = population mean

σ = standard deviation

Thus;

z = (9 - 7.9)/0.9

z = 1.22

From online p-value from z-score calculator, we have;

probability = 0.1112 = 11.12%

Read more about Z-score probability at; brainly.com/question/25638875

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6 0

2 years ago

What is the answer to this question

umka21 [38]

First you bring the 9 over with the seven
$-2= \sqrt[3]{x+9}$
Now cube both sides
$-8=x+9$
Finally subtract 9 over and get
$x=-17$

Check
$7=9+ \sqrt[3]{-17+9}$
$7=9+ \sqrt[3]{-8}$
$7=9+(-2)$
7=7

5 0

4 years ago

Grade 12 data!!

yaroslaw [1]

My opinion is 0.0032 hope it helps

3 0

3 years ago

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PLSS HELPP 25 POINTS AND BRAINLIEST

Genrish500 [490]

Answer:

144