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
FinnZ [79.3K]
2 years ago
10

Help me plz need help

Mathematics
2 answers:
xxMikexx [17]2 years ago
8 0

Answer:

Step-by-step explanation:

use the area of a circle formula

A=pi r^2

78.5= pi r^2

78.5/ pi =r^2

24.9873..=r^2

\sqrt{24.9873} = r

4.9987...=r  in meters , pretty close to 5

atroni [7]2 years ago
4 0

Answer:

Concept: Area

  1. area = \pi {r}^{2}
  2. We are given area hence 78.5 square meters
  3. We want the radius so we isolate
  4. 78.5 = \pi {r}^{2}
  5. Isolate for r to get r= 4.99 or 5 square units approximately
You might be interested in
Can someone help me plz ​
stiks02 [169]

Answer:

this is just a guess but 81

Step-by-step explanation:

I hope it is right, but I just did quick math.

so it might also be 82 if you round up to the nearest number. (sorry if this is confusing)

7 0
3 years ago
What is the quotient of 560 and 7?
natka813 [3]
Quotient is Latin for "how many times" and it is the answer to a division problem.

560/7=80

we can prove this by doing it backwards

7*80=560
3 0
3 years ago
a pollster wishes to estimate the proportion of united states voters who favor capital punishment. how large a sample is needed
olasank [31]

The sample size must be 543 so the sample proportion is will not differ by 5%

We are given the following in the question:

Margin of error = 5%

Confidence interval:

p ±z√(p'(1 - p')/n)

Margin of error =

p = ±z√(p'(1 - p')/n)

Since no particular proportion is given, we take

p' = 0.5

Z critical at α 0.02 is ± 2.33

Putting values, we get,

p = ±z√(p'(1 - p')/n)

2.33 x √(0.5(1 - 0.5)/n)

√n = 2.33x 0.5/0.05

n = 542.89 = 543

Thus, the sample size must be 543 so the sample proportion is will not differ by 5%

To learn more about confidence interval refer here

brainly.com/question/15712887

#SPJ4

3 0
1 year ago
Find the volume of the rectangle prism shown below. 3cm 7cm 5cm
Lelechka [254]
105 cubic centimeters
6 0
4 years ago
Heehehehehhehehheheheheheehe ehe he e
saw5 [17]

Answer:

8 batches

Step-by-step explanation:

divide 5 1/3 and 2/3

Hope this helps

5 0
3 years ago
Other questions:
  • What is the square root of 16 X ^36
    10·2 answers
  • Kay cuts three (3) pizzas so each of her friend at the table receives ¾ pizza. How many friends are at the table?
    6·1 answer
  • Meredith has 8 pages of homework to do. If she can finish of a page in one hour, how
    15·2 answers
  • PLEASE help me I need help
    6·2 answers
  • Mrs. Reed collects shells. Each shell in her collection weighs about 4 ounces. Her collection weighs about 12 pounds in all. Abo
    15·1 answer
  • A+3 1/4+5 2/9 what is the value of a, explain how you got the answer
    6·2 answers
  • which of the points (s,t) is inside the shaded region of the set of inequalities qualities shown below?
    12·1 answer
  • Need only #6 done (Show work) will give brainliest
    8·1 answer
  • X/15 = 8<br> its a one step equation
    10·1 answer
  • I need help with math I will give 5 hearts and brainlist and thanks you will get 61 points this is pre algebra
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!