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
OlgaM077 [116]
3 years ago
12

21/x=84/120 solve the proportion​

Mathematics
1 answer:
Nimfa-mama [501]3 years ago
3 0

Answer:  X= 30

Step-by-step explanation:

Hope that helped :)

You might be interested in
I need help with question #2. ASAP. Anything is appreciated:)
DedPeter [7]
Y = 4/5x + 30

4/5 because the slope is 4 up, 5 right. 30 is the y-int
4 0
3 years ago
In the picture, each apple part is 1/2 of an apple. Which equation best describes the picture?
iren [92.7K]

Answer:

There's no picture.

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Biggest tree in the world:
AnnZ [28]

Answer:

80m

Step-by-step explanation:

The height of giant redwood tree is 100m.

so half of it is 50m

The height of redwood tree is 30m+ 50m= 80m

5 0
2 years ago
Read 2 more answers
Using long division, what are the first 4 digits in converting<br> 13/33<br> to decimal form?
Elena L [17]

Answer:

0.3939

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
The mean income per person in the United States is $44,500, and the distribution of incomes follows a normal distribution. A ran
Artist 52 [7]

Answer:

We conclude that the residents of Wilmington, Delaware, have higher income than the national average

Step-by-step explanation:

We are given the following in the question:  

Population mean, μ = $44,500

Sample mean, \bar{x} = $52,500

Sample size, n = 16

Alpha, α = 0.05

Sample standard deviation, s =  $9,500

a) First, we design the null and the alternate hypothesis

H_{0}: \mu = 44,500\text{ dollars}\\H_A: \mu > 44,500\text{ dollars}

We use one-tailed(right) t test to perform this hypothesis.

c) Formula:

t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}} }

Putting all the values, we have

t_{stat} = \displaystyle\frac{52500 - 44500}{\frac{9500}{\sqrt{16}} } = 3.37

b) Rejection rule

If the calculated t-statistic is greater than the t-critical value, we fail to accept the null hypothesis and reject it.

Now,

t_{critical} \text{ at 0.05 level of significance, 15 degree of freedom } = 1.753

Since,                    

t_{stat} > t_{critical}

We fail to accept the null hypothesis and reject it. We accept the alternate hypothesis. We conclude that the residents of Wilmington, Delaware, have higher income  than the national average

5 0
3 years ago
Other questions:
  • Please answer correctly !!!! Will mark brainliest !!!!!!!
    9·1 answer
  • Which pair of angles are vertical angles?
    8·2 answers
  • What is 2000 plus 5050??
    13·2 answers
  • Starting time: 6:57 pm <br> Elapsed time: 47 minutes
    12·2 answers
  • How many minutes does Ali run per calorie burned?<br><br> What is the slope of the graph?
    12·1 answer
  • Minas time for running the mile 9.4 minutes. If her friends ran the mile in 11.02 minutes, how much faster was Mina?
    15·1 answer
  • How many didgidts of pi are there?<br> Write it no copy n pastin
    14·1 answer
  • How does the value of m affect the graph of the<br> equation?
    12·1 answer
  • HELP pls if you know this
    10·1 answer
  • HELP MEE pleaseeeeeeee
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!