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
Svetllana [295]
3 years ago
7

You took a 5-question multiple choice quiz with 4 choices for each question. If you guess at random on each question, what is th

e probability that you get at least one question correct?
Mathematics
1 answer:
Arturiano [62]3 years ago
5 0

Answer:

80%

Step-by-step explanation:

4/5=80% chance of getting one correct

You might be interested in
100% with 8 equal parts
bulgar [2K]

Are you asking what the 8 equal parts are ? If so 100/8=12.5

4 0
3 years ago
If 33% of the members of Sweetheart Union sign petitions to decertify the union, the National Labor Relations Board will call an
Elis [28]

Answer:

There is no need to call for election.

Step-by-Step Explanation

Surveys are based on probability or statistics. It serves as a standard tool for experimental research in marketing, social sciences and official data statistics.

Since 8 out of 40 members of the Sweetheart Union will sign the petition, the percentage of those who will sign the petition is calculated below:

\frac{8}{40}*100=20\%

Based on the sample survey, only 20 percent of the members will sign the petition. Since, in the sample, the number of those who will sign is less than 33%, the union should be told that there is no need for the National Labor Relations Board to call for the election.

5 0
3 years ago
Amy and Zach each have 24 feet of fencing for their rectangular gardens. Amy makes her fence 6 feet long . Zach makes his fence
saul85 [17]

For this case we have that by definition, the area of a rectangle is given by:

A = w * l

Where:

w: Is the width of the rectangle

l: is the length of the rectangle

Each of the girls has 24 feet of fencing, that is, the perimeter is P = 2w + 2l = 24.

Amy:

l = 6 \ ft\\2w + 2 (l) = 24\\2w + 2 (6) = 24\\2w + 12 = 24\\2w = 24-12\\2w = 12\\w = 6

Thus, Amy's fence area is: A = 6 * 6 = 36 \ ft ^ 2

Zach:

l = 8 \ ft\\2w + 2l = 24\\2w + 2 (8) = 24\\2w + 16 = 24\\2w = 24-16\\2w = 8\\w = 4

Thus, the area of Zach's fence is:A = 4 * 8 = 32 \ ft ^ 2

Answer:

Amy's garden has a greater area

36 \ ft ^ 2-32 \ ft ^ 2 = 4ft ^ 2, is 4 \ ft ^ 2greater

5 0
3 years ago
Read 2 more answers
NEED HELP ASAP. By what percent will a fraction change if its numerator is decreased by 30% and its denominator is decreased by
joja [24]

Answer:

0.7x/0.8y = x/y * 0.7/0.8 = x/y * 0.875

So the fraction is reduced by 12.5%

5 0
3 years ago
(9 x 10) + (20x + 21) = 571<br><br> What does (x) equal
creativ13 [48]
(9 × 10) + (20x + 21) = 571
90 + 20x + 21 = 571
111 + 20x = 571
- 111
20x = 460
÷ 20
x = 23
I hope this helps!
8 0
2 years ago
Read 2 more answers
Other questions:
  • I need help here please..! I took a picture of the Multi -Step equations..!
    6·1 answer
  • What is 2 2/3 + 4 1/6 = ?
    15·1 answer
  • A Total of 35 pints of blood were collected at a local blood drive. How many quarts of blood were collected?
    9·2 answers
  • Luna want to know what proportion of the 7th graders at her school are interested in taking art class. Which is the best group s
    5·2 answers
  • Hey can someone answer this ASAP
    9·1 answer
  • Please help me. I will mark brainliest.​
    8·1 answer
  • a. A simple random sample of size 80 has a mean of 7.31. The population standard deviation is 6.26. Construct a 99% confidence i
    9·1 answer
  • Solve the following problem. Round to one decimal place if necessary.
    9·1 answer
  • The cone to the right has a height of 11 in. and a volume of
    14·1 answer
  • Which of the following terms are possible in the domain of a sequence? Select all that apply.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!