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RUDIKE [14]
2 years ago
15

20 points!!!

Mathematics
1 answer:
zlopas [31]2 years ago
7 0

Answer: choice B

Step-by-step explanation:

the mean is the sum of terms divided by the number of terms

mean=75.77, has to be rounded so it is 75.8

mode = 63 the one who appears the most

median is 76.5

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PLEASE HELP ME ASAP!<br> Find are and perimeter!!!!
dangina [55]
Area =  the top semicircle + the rectangle AEBD

= 1/2 pi*6^2 + 6*12  =  128.55 cm^2 to nearest 100th

Perimeter = 6pi + 12 + 2 pi * 3 = 49.70 cm
6 0
3 years ago
Suppose compact fluorescent light bulbs last, on average, 11,500 hours. The distribution is normal and the standard deviation is
juin [17]

Answer:

2.275%

Step-by-step explanation:

The first thing to do here is to calculate the z-score

Mathematically;

z-score = (x-mean)/SD

from the question, x = 12,300 hours , mean = 11,500 hours while Standard deviation(SD) = 400 hours

Plugging the values we have;

z-score = (12,300-11,500)/400 = 800/400 = 2

Now, we want to calculate P(z ≤ 2)

This is so because we are calculating within a particular value

To calculate this, we use the z-score table.

Mathematically;

P(z ≤ 2) = 1 - P(z > 2) = 1 - 0.97725 = 0.02275

To percentage = 2.275%

6 0
3 years ago
If 4.5 pounds of chocolate cost $10, how
allsm [11]

I think 5.4

4.5÷10= 0.45

0.45x12=5.4

3 0
3 years ago
Which function has a vertex at the origin?
Elenna [48]

answer D

Step-by-step explanation:

Hello,

we can check the graph of the functions as attached or compute the vertex analytically

from the graph you can see that D is the correct answer

8 0
3 years ago
Read 2 more answers
How to write 0.624 in expanded form
GalinKa [24]

Answer:

0.6 + 0.02 + 0.004

Step-by-step explanation:

0.624=0.6 + 0.02 + 0.004

6 0
3 years ago
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