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
lilavasa [31]
3 years ago
8

Mariah has a spinner that has 10 equal sections, each containing a different number from 1 to 10. Mariah determines about how ma

ny times the spinner will land on a number that is greater than 7 in 250 spins, and her work is shown below.
P (number greater than 7) = StartFraction Number greater than 7 over Total number of sections EndFraction times number of spins = StartFraction 4 over 10 EndFraction (250) = 100.

What mistake did Mariah make, if any?
Mariah has the formula reversed; it should be the total number of sections over the numbers greater than 7.
Mariah should have used a 3 in the numerator because there are 3 numbers greater than 7.
Mariah should multiply by the number of sections in the spinner rather than the total number of spins.
Mariah calculated the prediction correctly and did not make any mistakes.
ASAP plz

Mathematics
1 answer:
xxTIMURxx [149]3 years ago
7 0

There are 10 total numbers.

10 - 7 = 3, so there are 3 numbers greater than 7.

Mariah should have used a 3 in the numerator because there are 3 numbers greater than 7.

You might be interested in
sam cut a pie into equal slices.There are only three slices left.The angle measure for the three slices is 72 degrees.how many s
mars1129 [50]

Answer:

Sam sliced the pie into 15 equal slices

Step-by-step explanation:

Given : Sam cut a pie into equal slices.There are only three slices left.The angle measure for the three slices is 72 degrees.

We have to determine the number of slices that the Sam cuts.

Sam cuts a pie and pie is in shape of circle therefore total angle measure is 360°.

Since, Given the angle measure for the three slices is 72 degrees.

So, The angle measure for the one slices is \frac{72}{3}=24 degrees.

Since, Pie is cut into equal slices.

So, measure of each slice must be equal.

So let he cut x slices of pie of 24°

So , total measure of x slices must be equal to 360°

24 · x = 360

x = 15

Thus, Sam sliced the pie into 15 equal slices

7 0
2 years ago
Read 2 more answers
Yesterday, 4/7 of the 210 students in a contest gave their speeches. How many students gave their speeches?
Elenna [48]

Answer:

120.

Step-by-step explanation:

210 * 4/7

=  30 * 4

= 120.

6 0
3 years ago
What are the solutions to the equation?
nekit [7.7K]

The correct answer is -5 and 3

I took the test and this was the correct answer

Hope I helped :)

6 0
3 years ago
Read 2 more answers
A dot plot titled Number of Hours Spent on Homework goes from 1 to 6. There is 1 dot above 1, 5 dots above 2, 6 dots above 3, 4
Flura [38]
This is more than one question.
3 0
3 years ago
​ A sample of n = 9 college students is used to evaluate the effectiveness of a new Study Skills Workshop. Each student’s grade
forsale [732]

Answer:

B) μD = 0.60 ± 0.10(1.397)

Step-by-step explanation:

The confidence interval is given by:

MD±t_{\alpha/2, n-1} \frac{s}{\sqrt{n} }

Where

MD=60

n=9

df=n-1=8

t_{\alpha/2, n-1}=1.397

s=\sqrt{0.09} =0.3

Then the confidence interval is

μD=0.60±1.397*(0.3/√9)

μD=0.60±0.10*(1.397)

6 0
2 years ago
Other questions:
  • 7.3×9.6 show your work
    8·1 answer
  • (6-7)[4-6]^2+2(-4)-2]
    15·1 answer
  • Bryan reads for x minutes. kelly reads for one-fourth the amount of time bryan reads. which statement explains why 14x14x and 0.
    6·1 answer
  • B=3,c=7 Please help Iam struggling
    11·1 answer
  • The area of a circle is 320 square meters. Find the radius of the circle. Then find the circumference. Round your answers to the
    9·2 answers
  • Give the standard form for 900.000 000 + 50 50.000 000 + 9.000 + 600 + 20 + 7
    7·1 answer
  • Nate's weekly pay increased from $710 to $770. Which of the following is closest to the
    5·1 answer
  • A soccer player uses her head to hit a ball up in the air from a height of 2 meters with an initial vertical velocity of 5 meter
    8·1 answer
  • The price of AirPod pros was reduced from $200 to $160 for Christmas by what percentage was the price of the AirPod pros reduced
    8·2 answers
  • A triangle has sides with lengths of 15 meters, 36 meters, and 39 meters. Is it a right triangle?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!