58.11 i got that answer by dividing 39 by 149
Answer:
The answer is actually <em>CD, GH, and AB</em>. I got it incorrect from the answer above. This is for people in the future who are looking for answers and don't get messed up over that guy.
Step-by-step explanation:
I just took the test and got the answer wrong. Correct answer above. (Checkmarks next to answer means its correct)
You just need to do 12 1/5 ÷ 1 4/5.
To do this, first convert both fractions to improper fractions or topheavy fractions.
12 1/5 -
15 × 5 is 60, 60 + 1 is 61 so 12 1/5 = 61/5
1 4/5 -
1 × 5 is 5 and 5 + 4 is 9. 1 4/5 = 9/5
To divide fractions, you do keep, chang, flip (keep the 1st fraction, change the ÷ to ×, and flip the 2nd fraction)
the question starts as 61/5 ÷ 9/5 and becomes 61/5 × 5/9
multiplication in fractions is literally just numerator × numerator / denominator × denominator.
61 × 5 is 305. 5 × 9 is 45. the fraction is 305/45.
however, we need a whole number. 305/45 converted into a decimal is 6.7777778 (6.7 recurring). obviously you can't put a fraction of a book onto a shelt, so you round it down to the nearest whole number, which is 6.
final answer: 6
Answer:
b 43.5 cm^2
Step-by-step explanation:
The area of a trapezoid is found by using the formula
A = 1/2 (b1+b2) h
where b1 and b2 are the lengths of the bases
A = 1/2(13 +16) *3
A = 1/2 (29)*3
A = 43.5 cm^2
