1. what is the sum of the first eight terms of the series?

(−600)+(−300)+(−150)+(−75)+(−37.5)+

round the answer to two decimal places.

−1200.50

−1195.31

−1190.63

−1181.25

2. what is the sum of the first 7 terms of the series −3+6−12+24− ?


3. what is the sum of the series?

4+12+36+108++8748

8908

10,204

13,120

17,816

4. a florist sold 15 arrangements in its first month of business. the number of arrangements sold doubled each month.

what was the total number of arrangements the florist sold during the first 9 months?

enter your answer in the box.

5. cassidy dropped a ball from a height of 46 yards. after each bounce, the peak height of the ball is half the peak height of the previous height.

how far does the ball travel from the time cassidy drops the ball until it reaches its peak height after the 4th bounce?

120.75 yd

126.5 yd

129.375 yd

132.25 yd

Abcd is a parallelogram find the valuse of x

Cone w has a radius of 8 cm and a height of 5 cm. square pyramid x has the same base area and height as cone w. paul and manuel disagree on how the volumes of cone w and square pyramid x are related. examine their arguments. which statement explains whose argument is correct and why? paul manuel the volume of square pyramid x is equal to the volume of cone w. this can be proven by finding the base area and volume of cone w, along with the volume of square pyramid x. the base area of cone w is π(r2) = π(82) = 200.96 cm2. the volume of cone w is one third(area of base)(h) = one third third(200.96)(5) = 334.93 cm3. the volume of square pyramid x is one third(area of base)(h) = one third(200.96)(5) = 334.93 cm3. the volume of square pyramid x is three times the volume of cone w. this can be proven by finding the base area and volume of cone w, along with the volume of square pyramid x. the base area of cone w is π(r2) = π(82) = 200.96 cm2. the volume of cone w is one third(area of base)(h) = one third(200.96)(5) = 334.93 cm3. the volume of square pyramid x is (area of base)(h) = (200.96)(5) = 1,004.8 cm3. paul's argument is correct; manuel used the incorrect formula to find the volume of square pyramid x. paul's argument is correct; manuel used the incorrect base area to find the volume of square pyramid x. manuel's argument is correct; paul used the incorrect formula to find the volume of square pyramid x. manuel's argument is correct; paul used the incorrect base area to find the volume of square pyramid x.

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.