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
Alinara [238K]
3 years ago
14

Multiply (2.0 ⋅ 10−4) ⋅ (3.1 ⋅ 10−20). Express the answer in scientific notation. The options are:

Mathematics
1 answer:
Mkey [24]3 years ago
3 0
(2.0×10^-4)×(3.1×10^-20)
=(2.0×3.1)×(10^4×10^-20)
=6.2×10^(-4+(-20))
=6.2×10^-24. Hope it help!
You might be interested in
According to the Bureau of Labor Statistics, the average weekly pay for a U.S. production worker was $441.84 in 1998 (The World
Oksanka [162]

Using the normal distribution, it is found that a production worker has to make $542.64 a week to be in the top 30% of wage earners.

<h3>Normal Probability Distribution</h3>

In a normal distribution with mean \mu and standard deviation \sigma, the z-score of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

  • It measures how many standard deviations the measure is from the mean.
  • After finding the z-score, we look at the z-score table and find the p-value associated with this z-score, which is the percentile of X.

In this problem:

  • The mean is of \mu = 441.84.
  • The standard deviation is of \sigma = 120.
  • The lower bound of the top 30% is the 70th percentile, which is X when Z has a p-value of 0.7, so <u>X when Z = 0.84.</u>

Z = \frac{X - \mu}{\sigma}

0.84 = \frac{X - 441.84}{120}

X - 441.84 = 0.84(120)

X = 542.64

A production worker has to make $542.64 a week to be in the top 30% of wage earners.

You can learn more about the normal distribution at brainly.com/question/24663213

3 0
2 years ago
Drew wants to buy exercise equipment that costs $140 and the sales tax is 5.57% what is the total cost of the equipment
Eddi Din [679]

Answer:

$147.80

Step-by-step explanation:

140 x .0557 = 7.80 Tax

Add tax to price

140 + 7.80 = $147.80

8 0
3 years ago
Read 2 more answers
Rewrite the rational exponent as a radical expression 2 and 7 over 8 and 2 and 1 over 4
VashaNatasha [74]
Convert to improper frist
2 and 7/8=16/8+7/8=23/8
2 and 1/4=8/4+1/4=9/4

(23/8)/(9/4)
make bottom 1
times the whole thing by (4/9)/(4/9)
(92/72)/(36/36)=
92/72=
23/18
6 0
3 years ago
13.Simplify the expression below.<br> <img src="https://tex.z-dn.net/?f=%5Csqrt%7B256%7D" id="TexFormula1" title="\sqrt{256}" al
Marina86 [1]
16 because if you multiple 16*16 it would give you 256
7 0
3 years ago
Read 2 more answers
Which is a solution to the system of inequalities? y≤-1/2x+3 y≥x+1
Serggg [28]

Answer:

y≤-1/2(x=4)+3

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • Will give brainliest!!
    10·1 answer
  • Which expression gives the length of the transverse axis of the hyperbola shown below?
    7·2 answers
  • If a family has 8 children, in how many ways could the parents have 3 boys and 5 girls
    13·1 answer
  • Select the ordered pairs that are solutions to the inequality 2x-3y&gt;=12
    8·1 answer
  • How do you know that the decimal gor 2/11 repeats without ending​
    11·1 answer
  • What is the equation of the line that passes through the point (6, -7) and has a<br> slope of - ?
    10·1 answer
  • Plsss help!! Will give brainliest to the person with most explanation and best answer! 30 POINTS!
    11·2 answers
  • Help me solve this problem please
    7·2 answers
  • What is the reference angle or quadrantal angle of sin330°?
    12·1 answer
  • PLS HELP ASAP WILL MARK BRAINLEIST
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!