1. find the LCD of 3 and 4 (12). so now your fractions are 5 4/12 and 3 9/12 perimeter is 2l + 2w so 2 (5 4/12) + 2( 3 9/12) = 10 4/12 + 7 6/12 = 17 10/12 or 17 5/6. this is reasonable because that the average perimeter of a sandbox.
2. LCD again is 12, so the fractions are 5 10/12 and 2 1/12. turn those into mixed fractions and get 70/12 and 25/12. 45/12 or 3 3/4. So she babysits 3 3/4 hours during the week.
3. The LCD for this is 8. now the fractions are 2/8 and 1 7/8 or 15/8. add 15/8 and 2/8 to get 17/8 or 2 1/8. He is using a total of 2 1/8 cups of flour.
4. 0.2
5. 0.054
6. 0.024
If by that you mean
24x^3 and 14x^2 × y^2,
The Gcf between them is
2x^2
Proof: 24x^3/2x^2 = 12x
(14x^2 × y^2)/2x^2 = 7y^2
since there is no common factor between 12x and 7y^2, 2x^2 is the greates common factor
Your fraction is: 2/3
This shows the slope, which is rise(vertical) over run(horizontal)
Hope this helps!
<span>C.
On the 6th day, the cars parked in the lot were 27, which is the highest figure in the entire two weeks period. The other days the numbers varied with slight differences which is normal. However, the difference between the 6th day and the next day which recorded the highest number is very big. A difference of 13 cars is quiet large.</span>