3 years ago

Question:

Mathematics

2 answers:

ahrayia [7]3 years ago

3 0

D
You just add the number of students in 11+ so that would be 5+2+6=13

Hope this helps

lakkis [162]3 years ago

3 0

Answer:

your answer gonna be the Letter is D or A

You might be interested in

Write down 0.6,45%and 11/20 in asending order

Katyanochek1 [597]

Answer:

(45%) 0.45, 11/20 (0.55) and 0.6

Step-by-step explanation:

7 0

3 years ago

Your grandmother gave you $8.34 with which to buy a present. This covered 3/4 of the cost. How much did the present cost???

Dahasolnce [82]

So 8.34=3/4 of preset
find 4/4 of present
divide 8.34 by 3
8.34/3=2.78=1/4 of present
1/4 times 4=4/4
2.78 times 4=4/4 present=11.12

answe ris present cost $11.12

7 0

4 years ago

The number of calories burned at the gym is normally distributed with a mean of 425 and a standard deviation of 51. Find the Z-s

Galina-37 [17]

Answer:

(a) -3.708

(b) 1.706

(c) 0.490

Step-by-step explanation:

The z-score of normal distribution is given as:

$z=\frac{x-\mu}{\sigma}$

(a)

Given:

Score is, $x=268$

Mean value is, $\mu =425$

Standard deviation is, $\sigma = 51$

z-score is, $z=\frac{268-425}{51}=\frac{-157}{51}=-3.078$

(b)

Given:

Score is, $x=512$

Mean value is, $\mu =425$

Standard deviation is, $\sigma = 51$

z-score is, $z=\frac{512-425}{51}=\frac{87}{51}=1.706$

(c)

Given:

Score is, $x=450$

Mean value is, $\mu =425$

Standard deviation is, $\sigma = 51$

z-score is, $z=\frac{450-425}{51}=\frac{25}{51}=0.490$

6 0

3 years ago

A population of rabbits triples every month. The population starts with two rabbits . How many rabbits are there after three mon

DanielleElmas [232]

The answer is 54 because 2×3=6 6×3=18 18×3=54

6 0

3 years ago

What is the square root of 83 to the nearest tenth?

Ymorist [56]

Knowing the squareroot of 81 is 9, we can easily know that square root of 83 is close to 9.

9 to the closest tenth is 10.

Hope I helped :)

8 0

4 years ago