$W = \displaystyle \int^{5}_{2} F(x) ~ dx\\\\\\= \displaystyle \int^{5}_{2} \left(12x^2 +7\right) ~dx\\\\\\= 12\displaystyle \int^{5}_{2} x^2 ~dx + \displaystyle \int^{5}_{2} 7~ dx\\\\\\=12 \left[\dfrac{x^3}3 \right]^{5}_{2} + 7\left[x\right]^{5}_{2}\\\\\\=4(5^3-2^3) + 7(5-2) = 468 + 21 = 489~ J$

5 0

2 years ago

Joe ate twice as many pieces of Halloween candy as Ed. Together they ate 48 pieces. How many pieces of candy did ed eat ?

Lemur [1.5K]

48 in total theirs two people so that’s 12 each but joe had 2 twice as many as Ed. Which Ed ate 6

6 0

3 years ago

What is the solution to 89+ K= -42<br> A. K=131<br> B. K=47<br> C. K=-47<br> D. K=-131

lisabon 2012 [21]

89-131=-42 the answer is k=-131

5 0

3 years ago