Answer:
Step-by-step explanation:
Split the words at "and" and solve one piece at a time. (when a function has "or equal to", use the ones with the line under 
) Let x be the unknown value
"less than or equal to 87"
"greater than or equal to 83"
Put them together by putting x in the middle. Don't forget to make the signs face the right way:
Done.
Answer: 12
Step-by-step explanation:
Area of trinagle = b * h /2
8*3= 24/2= 12
To find y add both numbers then subtract
Its 30% because if you take 103 put it in the calculator and divide by 100 you get 1.03 and multiply that time 30 you get 30.9 thats how you find percent
Note that the formula for the circumference of a circle is πd, while the formula for the area of a circle is πr².
π≈3.14
A. C=πd
Simply plug in the numbers into the formula.
Diameter=Radius*2
17*2=34
C=34(π)
B. (π)(5²)
Plug in the numbers into the formula. Remember that half of the diameter is the radius.
C. (π)(4.5)
There are two possible formulas that could be used to calculate the circumference of a circle: πd and 2πr.
The expression above is simply multiplying the circle's radius times pi. Therefore, it is not a method that could be used to find the circumference of a circle.
D. (π)(6.5²)
Remember that the formula for calculating the area of a circle is πr².
Half of the diameter is 6.5 (13.5/2=6.5). 6.5 cm. is the radius. Now just plug the numbers into the formula.
(π)(6.5²)
Therefore, the last answer choice is the correct answer.
