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2 years ago

15

Can you please help me I don't understand

1 answer:

MA_775_DIABLO [31]2 years ago

3 0

For #11 you add 54 + 59+ 57+ 54. Then you have 224. Then divide 224 by 4 since there are 4 numbers. Your answer should be 56 inches as the average, or mean.
Remember, when you divide, you divide by the number of all the numbers. I'm trying to make sense but hope this helps!

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The photo down below will show you what I need help with.

Irina18 [472]

Answer:

$\frac{x+7}{3}$ (the second option)

Step-by-step explanation:

Hope this helps!

7 0

2 years ago

On a certain exam, Tony corrected 20 papers and found the mean for his group to be 70. Alice corrected the remaining 10 papers

son4ous [18]

Answer:

The mean of the combined group is 76.67 ≈ 77

Step-by-step explanation:

The sum of the grades in Tom's group is 20×70 = 1400
The sum of grades in Alice's group is 10×90=900
The sum of gradees in the combined group is =1400+900=2300
Then the mean grade of the combined group is $\frac{2300}{30}=76.67$

where

2300 is the sum of the all grades in the combined group
30 is the total number of people in the group

4 0

2 years ago

The lengths of two sides of a triangle are 11 cm and 19 cm. Identify the range of possible lengths for the third side.

mamaluj [8]

Answer:

2nd option

Step-by-step explanation:

Given 2 sides of a triangle then the third side x is in the range

difference of 2 sides < x < sum of 2 sides , that is

19 - 11 < x < 19 + 11

8 < x < 30

5 0

2 years ago

Read 2 more answers

N - 4 = 3n + 6<br> what number does n represent?

pav-90 [236]

Answer:

n = -5

Step-by-step explanation:

n - 4 = 3n + 6

n = 3n + 10

-2n = 10

n = -5

7 0

2 years ago

Read 2 more answers

Find the x and y intercepts of 6x+3y=30

OlgaM077 [116]

X intercept is 5,0
y intercept is 0,10

3 0

2 years ago

Read 2 more answers