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professor190 [17]
3 years ago
12

Find the average (mean) of the following test scores 82,92,47,78,80

Mathematics
2 answers:
kaheart [24]3 years ago
7 0

Answer:

add everything together first then divide by how many whole numbers there are

Step-by-step explanation:

82+92+47+78+80=379

379/5=75.8

hope that helped have a good day

Mrac [35]3 years ago
6 0

Answer:

75.8

Step-by-step explanation:

add up all test scores then divide them by the number of test scores

82+92+47+78+80= 379

379/5= 75.8

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Write in simplest form. <br> n+1/7=2/3
ziro4ka [17]
I hope this helps you


n=2/3-1/7


n=2.7/3.7-1.3/7.3


n=14/21-3/21


n=11/21
7 0
3 years ago
What's the answer to 4{-4(3-12)-17}?​
alexandr1967 [171]

Answer:

76

Step-by-step explanation:

4(-4(-9)-17)

4(36-17)

4(19)

6 0
3 years ago
Read 2 more answers
How to factor x^3 - 4x^2 - 9x + 36 by grouping
const2013 [10]

Answer:

(x-4) (x-3) (x+3)

Step-by-step explanation:

x^3 - 4x^2 - 9x + 36

Make 2 groups

x^3 - 4x^2            - 9x + 36

We can factor out x^2 from the first group and -9 from the second group

x^2 (x-4)    - 9(x-4)

Now factor out (x-4)

(x-4) (x^2 -9)

This may be an answer choice but we can still factor

(x^2 -9) is the difference of squares

(x^2-9) = (x-3) (x+3)

Replacing this

(x-4) (x-3) (x+3)

6 0
3 years ago
Read 2 more answers
Solve for x in the diagram below.
user100 [1]

Answer:

x = 34°

Step-by-step explanation:

As you can see, in your pic there is a straight angle which is equal to 180°

Therefore, all the 3 angles combined will be equal to 180°

5 0
3 years ago
Custodian at Movie Theater
ollegr [7]

Answer:

1) A week: $151.74

2) A month : $606.96

3) A years : $7890.48

Step-by-step explanation:

Custodian at Movie Theater

pay:$9.95

per hours:

15.25 hours per week

How much do they make in

1) a- week

1 week = 15.25 hours

Hence,

1 hour = $9.95

15.25 hours = x

Cross Multiply

x = 15.25 × $9.95

x = $151.7375

Approximately = $151.74

2) A month

There are 4 weeks in a month

1 week = $151.74

4 weeks = x

Cross Multiply

x = 4 × $151.74

x = $606.96

3) A year

There are 52 weeks in a year

Hence,

1 week = $151.74

52 weeks = x

Cross Multiply

x = 52 × $151.74

x = $7890.48

Therefore, they made in :

1) A week: $151.74

2) A month : $606.96

3) A years : $7890.48

5 0
3 years ago
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