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DENIUS [597]
3 years ago
13

For five mathematics tests, your scores were 81, 86, 81, 76, 71. what was your average score?

Mathematics
1 answer:
trasher [3.6K]3 years ago
7 0

add them together then divide by 5

81 +86 +81 +76 +71 = 395

395/5 = 79

 your average was 79

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-4b - 5 + 2b =10. Can I have some help solving this.
kramer

Answer:

-7.5

Step-by-step explanation:

Simplify

-4b - 5 + 2b = 10

-2b - 5 = 10

-2b = 15

b = -7.5

5 0
3 years ago
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Need as much help as I can get before 7 minutes are over
andriy [413]

Answer:

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3 years ago
Is the following relation a function? *
spayn [35]

Answer:

No.

Step-by-step explanation:

Well at first glance it might seem so but there are two points particularly that can tell you that these points cannot be within a function.

The points (3,2) and (3,-2) will yield an undefined slope (a straight vertical line). There is no possibility that the other points can be in this line (as their y - values are different) and there is no possibilty that this is a function at all according to the vertical line test (the test is that if you draw a vertical line that there shouldn't be more than one point on it).

8 0
3 years ago
What is the slope of the line given by the equation y=-1/3x? Entee your answer as an integer or fraction in lowest terms.
Serhud [2]
-1/3

really? it's that easy dude. 

whatever number is next to x, like say, 3x, that number would be the slope, so it would be 3.

hope it helped.

6 0
3 years ago
Can someone help me please and show work thank you
VladimirAG [237]

Answer:

60% decrease

Step-by-step explanation:

To work out percentage change you takeaway the original number by the new number (New number-Original number) in this case 24-60=(-36), then divide the decreased amount by the original number and multiply the answer by 100 (Decrease amount ÷ Original number x 100) for this question you'd do (-36)÷60=(-0.6) then (-0.6)x100=(-60).

The minus shows its a decrease in percentage by 60%

(I hope this helps srry if it doesn't make sense)

6 0
3 years ago
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