Find the area.

A. 24 m2
B. 48 m2
C. 144 m2
D. 72 m2


Answer: C

Mathematics

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Solve the problem.A projectile is fired with an initial velocity of 400 feet per second at an angle of 45° with the horizontal. In how many seconds will the projectile strike the ground? (Round your answer to the nearest tenth of a second.) The parametric equations for the path of the projectile are x = (400 cos 45°)t, and y = (400 sin 45°)t - 16t2.

A. 25.8 sec B. 17.7 sec C. 22.5 sec D. 14.3 sec

Mathematics

Solve the problem.Fahrenheit temperatures can be obtained from Celsius (centigrade) by multiplying by 1 and adding 32°. What Fahrenheit temperature corresponds to a Celsius temperature of 45°?

A. 113 °F
B. 77 °F
C. 68 °F
D. 138 °F

Mathematics

Multiply by powers of 10.-3.130 × 1000

A. 3130 B. -31,300 C. 0.00313 D. -3130

Mathematics

Add.329 + 7503

A. 7732 B. 7842 C. 7832 D. 6832

Mathematics