Which pair or pairs of polygons are congruent?
2644
24
22
20
18
...
Mathematics, 10.02.2021 19:10 Hfruit
Which pair or pairs of polygons are congruent?
2644
24
22
20
18
pair 1
16
par 2
14
12
10
8
6
4-
pair 3
pair 4
2
0
-2 LO 2
4
6
8
10 12 14 16 18 20 22 24
OA. 3 and 4
OB. 1 and 3
Oc. 1,3, and 4
OD 2, 3, and 4
O E. 1, 2, 3, and 4
Answers: 1
Mathematics, 21.06.2019 19:30
The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)
Answers: 3
Mathematics, 22.06.2019 00:00
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
Mathematics, 22.06.2019 02:00
Which fraction represents the ratio 35 : 42 in simplest form
Answers: 1
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