The image of trapezoid PQRS after a reflection across WY is a trapezoid P'Q'R'S'. Which of the following statements are true?
A. SS' = 2 x
B. RR' - 2 SS'
C. RR' = 4 SS'
D. RZ RZ
E. RR ISS
F. RR 155
R
G. WY 155
H. msYZR = 90°
True
False
A.
O o
B.

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Math each whole number with a rational,exponential expression

Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?