Answer:
= c
or
= c
Step-by-step explanation:
We know that the diameter of a circle multiplied by 
is the circumference, so we can create this equation:
180 = c *
Your teacher told us to assume is 22/7, so we'll put that in
180 = c * 
To get c by itself, we divide both sides by 22/7
= c
Dividing by a number is the same as multiplying by its reciprocal, so we'll multiply 180 by 7/22
180 * 
= c
Evaluate
= c
= c
If you want a decimal instead:
= c
Answer:
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Step-by-step explanation:
Answer:
x = 20
Step-by-step explanation:
The two angles are complementary angles, which means they add to 90 degrees
2x+7 + 43 = 90
Combine like terms
2x+50 = 90
Subtract 50 from each side
2x+50-50 = 90-50
2x = 40
Divide each side by 2
2x/2 = 40/2
x = 20
Having 15 fewer people go to a concert
Answer:
31000 dollars were invested at 4% interest rate.
16000 dollars were invested at 5% interest rate.
Step-by-step explanation:
Convert the interest rate into decimal and then write down two equations to solve for the unknowns.
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