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How do you find the average grade of several grades?

can you look it up i am stumped i was gone from school for several days due to the death of my mom

I tried and i found nothing i am not sure what you look for first

To find the average of several grades, add up all the grades, and divide by the number of grades.

ok can you start the equation?

That means the sum off all the grades will be:
\(92+ 89+ 85+ 89+ 90 +x + x\)
Ok so far?

Now we need to solve the inequality for x.

First, add all the numbers on the numerator of the fraction.
Also, what is x + x = ?

\[\frac{ 445+2x }{ 7 }\

\[\frac{ 445+2x }{ 7 }\]

yes?

Great, so now we have this:
\(\dfrac{445 +2x}{7} \ge 90\)

now x7

630

445+2x >630

-445

2x>185

Correct.
Now divide both sides by 2.

92.5>x

No. Be careful. Don't switch sides.

oops

how is it done then

x>92.5

Correct, but remember it's "greater than or equal", not just plain "greater than."

thanks i see now

yes i know

my keys just won't let me click to do it the way you did it

it stopped working for some reason

You're welcome.