The reasonable answer is D makes since
Your question seems to be -7 +(1/8) -(-9) + (1/2) but then there is a decimal in front of the next -2 so that makes no sense unless that is a period before starting a new equation. You can simply type this beginning section into a calculator to get your answer of (21/8), but I have a feeling you just tried to copy and paste a test question and it did not format correctly in your question so is probably much more complicated than using a calculator.
A better idea would be to write it in math terms instead of words, then find a common denominator so you can simplify. Writing it out in words makes it too hard for your brain to think about it in terms of math.
To find the circumference of a circle, just multiply the diameter by π, or 3.14.
Since we are including the frame in the diameter, the new diameter would be 37 inches.
37π ≈ 116.24
So, A) 116.24 is the correct answer!
Step-by-step explanation: Divide by successive primes:
900 / 2 = 450
450 / 2 = 225
225 / 3 = 75
75 / 3 = 25
25 / 5 = 5
5 / 5 = 1
Write down the prime factors:
2 × 2 × 3 × 3 × 5 × 5
Write them in index form:
2² × 3² × 5²
