1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
max2010maxim [7]
3 years ago
8

Which expression is equivalent to (3−2^2) 5 ? 5−3^2 5−2^2 2^2−5 ​ 3^2−5

Mathematics
1 answer:
tamaranim1 [39]3 years ago
8 0
Well (3-2^2)5 = -5
and 5-3^2=-4
5-2^2=1
2^2-5=-1
3^2-5=4
but if you have to multiply them by 5 as well then (2^2-5)5=-5
You might be interested in
Determine the minimum sample size required when you want to be 99% confident that the sample mean is within 0.50 units of the po
vfiekz [6]

Answer:

b. 224

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.99}{2} = 0.005

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.005 = 0.995, so z = 2.58

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

In this problem:

We want to find n, when M = 0.5, \sigma = 2.9 So

M = z*\frac{\sigma}{\sqrt{n}}

0.5 = 2.58*\frac{2.9}{\sqrt{n}}

0.5\sqrt{n} = 7.482

\sqrt{n} = 14.964

(\sqrt{n})^{2} = (14.964)^{2}

n = 223.9

The nearest integer number to 223.9 is 224.

So the correct answer is:

b. 224

6 0
3 years ago
Y+6=1\3(x-9) what is the equation in slop intercept
Alla [95]

Answer:

x=3(y-9)

Step-by-step explanation:

5 0
3 years ago
A race is 3 miles long. There are water stations every 3/4 mile along the route. How many water stations are along the route?
Vilka [71]
There will be 4 water stations.

Why?

3/4 = .75 as a decimal

Personally, I believe that it’s easier to use decimals, I can explain the way in fractions in the comments if you’d like, just ask.

Anyway, .75 • 4= 3

or 3 / .75 = 4 (division is easier with bigger numbers)

so, there will be 4 water stations, given that the one race is 3 miles long.

If this explanation seems unclear, I’d be happy to explain. Feel free to ask in the comments!! I’m happy to help.

Hope this helps!

(If you find this answer helpful, please consider marking me brainliest, Thanks!)
6 0
3 years ago
Compared to diagrams and equations, tables are always the best way to find the value of a variable?
zubka84 [21]

It is false. Hope you pass! :)

7 0
3 years ago
A company has to buy computers and printers. Each computer, x, costs $565 and each printer, y, costs
Ilia_Sergeevich [38]

Answer:

1

Step-by-step explanation:

6 0
4 years ago
Read 2 more answers
Other questions:
  • Hank estimated the width of the door to his class room in feet what is a reasonable estimate
    10·1 answer
  • I need help on this problem please help me.
    11·1 answer
  • 3(5x-2)+12=51 solve the equation
    6·1 answer
  • A paint company claims their paint will be completely dry within 45 minutes after application. Recently, customers have complain
    10·1 answer
  • Marcus is 66 inches tall. This is 20 inches less than 2 times William's height.
    13·1 answer
  • <img src="https://tex.z-dn.net/?f=2%20%2B%20y%20%3D%201" id="TexFormula1" title="2 + y = 1" alt="2 + y = 1" align="absmiddle" cl
    11·2 answers
  • Help please. How to calculate it? That is the answer of last one ?
    15·1 answer
  • How is energy transferred between the atmosphere and hydrosphere?????????????????????????
    13·2 answers
  • The wheel on a bicycle has a diameter of 20 centimeters. What is the length of the rubber required to make a tire that will cove
    15·2 answers
  • Write 9 1/100 as a decimal number
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!