Answer:
The answer to your question is:
Step-by-step explanation:
=
GIYS HELP ASAP!!! i need to find the average
2 answers:
Answer:
Step-by-step explanation:
The average can be found by adding up all the values and dividing by the number of values.
1. Add the values
The values are her five test scores: 100, 95, 75, 100, 80
Add them : 100+ 95+75+100+80 = 450
2. Divide by the number of values
She took five tests, so there are five values. Divide 450 by 5.
450/5=90 = 90%
Her average grade is 90%
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Answer:
x = -7
Step-by-step explanation:
To find the value of x, you need to set up a proportion:
=
Then cross multiply:
15x - 15 = 18x + 36
Then subtract 15x from both sides:
-15 = 3x + 36
Subtract 36 from both sides:
-51 = 3x
Finally, divide both sides by 3:
x = -7