3 years ago

Write equivalent expressions for x^7 • x^-2

Mathematics

1 answer:

svet-max [94.6K]3 years ago

3 0

$x^7\times x^{-2}=x^{7-2}=x^5$

You might be interested in

A square has an area of 16 square ft what would be the measurement of its side

juin [17]

Answer:

4ft

Step-by-step explanation:

to get the area of a square you multiply the sides together so you just find the square root of the area

8 0

3 years ago

Read 2 more answers

Sort the fractions and numbers from smallest to largest 2 , 5/4 , 9/4 , 3 , 3/1

Fudgin [204]

Answer:

5/4, 2, 9/4, 3, 3/1 (the last two are the same so it could go in either order)

Step-by-step explanation:

1 1/4, 2, 2 1/4, 3, 3

7 0

3 years ago

The partial pressure of oxygen PaO2 is a measure ofthe amount of oxygen in the blood. Assume that the distribution ofPaO2 levels

Rus_ich [418]

Answer: a) 0.8665

b) 0.8190

Step-by-step explanation:

Given : The partial pressure of oxygen PaO2 is a measure ofthe amount of oxygen in the blood. Assume that the distribution ofPaO2 levels among newborns has a $\mu=$ 38 mmHg and $\sigma=$ 9 mmHg.

If we take a random sample n= 25 newborns, then using formula $z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}$ , we have

At x= 36

$z=\dfrac{36-38}{\dfrac{9}{\sqrt{25}}}\approx-1.11$

At x= 41

$z=\dfrac{36-38}{\dfrac{9}{\sqrt{25}}}\approx1.67$

Using table for z-values, the probability that the sample mean will be greater than 36 :

$P(z>-1.11)=1-P(\leq-1.11)=1-(1-P(z\leq1.11))=P(z\leq1.11)=0.8665004\approx0.8665$

The probability that the sample mean will be between 36 and 41 :-

$P(-1.11$

4 0

3 years ago

A store sold a case of scented candles for $17.85 that had been marked up 110%. What was the original price?

ipn [44]

17.83 times 1.1
=19.613
17.83+19.613
=37.443
=37.5 dollars

6 0

3 years ago

Read 2 more answers

It took Lorinda 45 minutes to drive from her house to the airport. It took her 10 minutes to find a parking space and 25 minutes

stellarik [79]

Answer:

9:30am

Step-by-step explanation:

To find what time simply add all of the minutes together and subtract. All of the steps take 100 minutes to do. 11.10 am is 670 minutes. So 670 - 100 = 570 then divide by 60 to get the time ie 9:30 am

3 0

3 years ago