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SashulF [63]
3 years ago
10

According to the Federal Communications Commission, 70% of all U.S. households have vcrs. In a random sample of 15 households, w

hat is the probability that the number of households with vcrs is between 10 and 12
Mathematics
1 answer:
jeka57 [31]3 years ago
4 0
.59479
59.5%


2020202020
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PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!!!!!!!!!!!!!!!!!!!PLSSSSSSS HELPPPPPPP I WILL GIVE BRAINLIESTTTTTTTTTT!!!
stira [4]

Answer:

4a^{-2}b^{7}

Step-by-step explanation:

12 a3b5 / 3a5b-2

= (12/3) x (a3 / a5) x (b5/b-2) = 4a^{-2}b^{7}

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5 0
3 years ago
What shape is the graph of the equation below? (x-5)^2/4^2 + y^2/7^2=1 A. A line B. A circle C. A parabola opening to the right
Black_prince [1.1K]

the answer to your question

is the letter  C

4 0
4 years ago
What is an Statistical Question? Will Mark Brainlist!!! (Only 10 points!)
sertanlavr [38]
A statistical question is a question where you do not get a straight-to-the-point answer. For example, if someone asks "What is your favorite dessert?" is an example of a non statistical question. And when someone asks "What are the most popular desserts in your family?" is an example of a statistical question. 

In other words, "a statistical question is a question that can be answered by collecting data and where there will be a variability in the data." Which means that the conclusion isn't determined by only one answer, but a population. 

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6 0
3 years ago
A runner, training for a competition, ran on a track every day for 10 weeks. The first week he ran 8 kilometers each day of the
Levart [38]

Answer:

Total = 686000 meters for 10 weeks 7 days a week.

Step-by-step explanation:

Let's solve this by doing the increase on just 1 training day per week. Then we can find the grand total for 7 days a week by multiplying by 7

a = 8000

n = 10

d = 400

Sum = (a + L)*n/2

  • L = a + (n - 1)*d
  • L = 8000 + (10 - 1)*400
  • L = 8000 + 9*400
  • L = 8000 + 3600
  • L = 11600 meters

Sum = (8000 + 11600)*10/2

Sum = 19600 * 10/2

Sum = 98000 meters.

This total represents 1 training day a week.

The total amount is 7 times this figure.

Total = 7 * 98000 = 686 000 meters.

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3 years ago
Last year, the number of students enrolled in the school was 672. If this number increases by 12% the next year, how many studen
slamgirl [31]

Answer:

Step-by-step explanation:

672 x 12% = 80.64

80.64 is going to be added...

672 + 80.64 = 752.64 ≈ 753 students...

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