Mathematics, 30.07.2021 20:50, silasjob09
Please Help! I will give you the brainiest and a lot of points!
a. How many listened to only rock music?
n(only rock)=
b. How many listened to classical and jazz, but not rock? This is the amount in region VI.
n(classical and jazz, not rock)=
c. How many listened to classical or jazz, but not rock? This is the sum of the amounts in regions III, VI and VII.
n(classical or jazz, not rock)=
d. How many listened to music in exactly one of the musical styles? This is the sum of the amounts in regions I, III, and VII.
n(exactly one style)=
e. How many listened to music in exactly two of the musical styles? This is the sum of the amounts in regions II, IV, and VI.
n(exactly two styles)=
f. How many did not listen to any of the musical styles? This is the amount in region VIII.
n(none)=
Answers: 2
Mathematics, 22.06.2019 00:00, xXwolfieplayzXx
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?
Answers: 3
Please Help! I will give you the brainiest and a lot of points!
a. How many listened to only rock...
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