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Ksivusya [100]
3 years ago
15

Which of the terms given can you write in the blank box so that the

Mathematics
1 answer:
Serhud [2]3 years ago
5 0
The blank box should be equal to 4
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The number of parking spots, y, in the local town x years from now can be modeled by the equation below. How
slavikrds [6]
6000. Hope this helps give brainliest
3 0
2 years ago
i think of a number, multiply it by 2 subract 6 and then divide by 4. If the answer is 8 what is the original number
ivanzaharov [21]

Answer:

19

Step-by-step explanation:

8 x 4 = 32

32 + 6 = 38

38 / 2 = 19

6 0
3 years ago
In a class, there are 20 girls and 10 boys. What is the percentage of the boys?​
gayaneshka [121]

Answer:

33.33%

Step-by-step explanation:

  • Number of boys=10
  • Number of girls=20
  • Total number of students=

Number of boys + Number of girls

10+20

30

  • Percentage of boys=

10/30×100%

33.33%

4 0
3 years ago
In the diagram of circle K, tangents are drawn from point A to points B and C on the circle. If arc mBC = 96, then what is the m
rjkz [21]

Answer:

∠A = 84°

Step-by-step explanation:

Since AB and AC are tangent to the circle, ∠ABK = 90° and ∠ACK = 90°.

Angles of a quadrilateral add up to 360°, so:

∠A + 90° + 90° + 96° = 360°

∠A = 84°

8 0
3 years ago
A random sample of size 15 taken from a normally distributed population revealed a sample mean of 75 and a sample variance of 25
GREYUIT [131]

Answer:

The upper limit of a 95% confidence interval for the population mean would equal 83.805.

Step-by-step explanation:

The standard deviation is the square root of the variance. Since the variance is 25, the sample's standard deviation is 5.

We have the sample standard deviation, not the population, so we use the t-distribution to solve this question.

T interval:

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 15 - 1 = 14

Now, we have to find a value of T, which is found looking at the t table, with 14 degrees of freedom(y-axis) and a confidence level of 0.95(t_{95}). So we have T = 1.761

The margin of error is:

M = T*s = 1.761*5 = 8.805.

The upper end of the interval is the sample mean added to M. So it is 75 + 8.805 = 83.805.

The upper limit of a 95% confidence interval for the population mean would equal 83.805.

4 0
3 years ago
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