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
vlabodo [156]
2 years ago
8

What is 30% of 70? Please help.

Mathematics
2 answers:
solmaris [256]2 years ago
4 0
70/x=100/30
x(70/x)=(100/30)x
70=3.33x
x=70/3.33
x=21
garik1379 [7]2 years ago
3 0
Hi lovely,

The answer you're looking for is 21.
You might be interested in
This is what I got,
USPshnik [31]
1/x + 1/y = 8
x + y = 8
6/x + 12/y = 72n
4 0
3 years ago
A manufacturing company produces steel housings for electrical equipment. The main component part of the housing is a steel trou
Mrrafil [7]

Answer:

Check the explanation

Step-by-step explanation:

(a)

H0: Population mean = 8.46

H1: Population mean is not equal to 8.46

The test statistic (t) is given by the following expression -

{t=\frac{\overline{x}-\mu_0}{s/\sqrt{n}}}

We have calculated the sample mean (8.421) and sample standard deviation (0.0461). Therefore, the test statistic (t) will be -

t = (8.421 - 8.46)/(0.0461/sqrt(49)) = -5.92

The left-sided critical value from t-distribution (two-tailed) is -2.01. Thus the test statistic falls in the rejection region and we reject the null hypothesis at 95% confidence level and conclude that the population mean is different from 8.46 inches.

(b)

There are the following four assumptions for a single sample t-test.

The observations are in ratio scale.

The observations have been taken in such a manner that every single observation is independent and uncorrelated from the others.

There should not be any significant outliers in the sample observations.

The sample data should be approximately normal.

(c)

The first assumption is true as the data is in inches. The second assumption cannot be tested now. It will depend upon the situation and study design which we assume as correct in this case. The third assumption is checked by plotting a box plot and finding the outliers. The final assumption can be checked using the Anderson-Darling normality test.

Kindly check the graphical table in the attached images below.

(d)

The data is normal (the p-value of Anderson-Darling test in > 0.05). However, two points in the Box plot are outliers though not grossly different from the entire sample data set. So, we conclude that the assumptions are valid in this case for conducting the t-test.

7 0
3 years ago
Distribute 1/3(12y - 9)
allochka39001 [22]
3. 4y-3
because 1/3*12y - 1/3*9 = 4y - 3
7 0
3 years ago
Reduce these fractions to the simplest form: 21/42= *
timurjin [86]

Answer:

1/2

Step-by-step explanation:

21 divided by 42 is 1/2

3 0
2 years ago
Given that ſ-, f(x) dx = 4, S f(x) dx = -3, and $129(x) dx = 8, find the following.
Simora [160]
Lt,[F(x)+2g(x)] x that’s the answer
5 0
3 years ago
Other questions:
  • 1) Which statement is true about this argument?
    13·1 answer
  • What is the measurement of N?<br> A) 17° <br> B) 18° <br> C) 20° <br> D) 45°
    14·2 answers
  • A six feet-tall person is standing next to a flag pole.The person is casting a shadow 1 1/2 feet in length,while the flagpoleis
    11·1 answer
  • . Kerry bought a bag of dog food for $37.99. If sales tax is 7.6%, how much did she pay in tax?
    5·2 answers
  • Is y = 1⁄2(1/4)x growing or decaying
    7·1 answer
  • For all values of x f(x)
    8·1 answer
  • Makiyha Martin
    8·2 answers
  • E) Write
    10·1 answer
  • PLEASE HELP ASAP THANK YOU!!!
    15·1 answer
  • Help help help me please ​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!