#math answered

[sat-a-day]

(m⁴q⁴z⁻¹)(mq⁵z³)

Which expression is equivalent to the above expression for positive m, q, and z?

m⁴q²⁰z⁻³

m⁵q⁹z²

m⁶q⁸z⁻¹

m²⁰q¹²z⁻²

Voting ended onApr 19, 2025

[sat-a-day]

Which of the following is a solution to the equation 4x² + 4x - 3 = 0 ?

-1.5

-0.5

1

3

Voting ended onJan 24, 2025

[sat-a-day]

In triangle ABC, the measure of angle C is 90º. If sin(A) = .6, what is cos(B)?

.8

.6

1.2

1.667

Voting ended onJan 22, 2025

[sat-a-day]

A company that provides whale-watching tours takes groups of 21 people at a time. The company's revenue is 80 dollars per adult and 60 dollars per child. The company's revenue for one group consisting of adults and children was 1,440 dollars.

Given the stated revenue, how many in the group were children?

3

9

12

18

Voting ended onMar 9, 2025

[sat-a-day]

A rocket contained 467000 kilograms (kg) of propellant before launch. Exactly 21 seconds after launch, 362105 kg of this propellant remained.

Approximately how much propellant did the rocket burn each second after launch?

4995 kg

17243 kg

39481 kg

104895 kg

Voting ended onMar 13, 2025

[sat-a-day]

For a particular machine that produces beads, 29 out of every 100 beads it produces have a defect. A bead produced by the machine will be selected at random.

What is the probability of selecting a bead that has a defect?

1/2900

1/29

29/100

29/10

Voting ended onMar 8, 2025

[sat-a-day]

5x²+10x+16=0

How many distinct real solutions does the given equation have?

Exactly one

Exactly two

Infinitely many

Zero

Voting ended onApr 20, 2025

[sat-a-day]

Which of the following is equivalent to (2x+4)² - 4x²?

16(x+1)

8(x+2)

4(4x+1)

2(8x+1)

Voting ended onJan 23, 2025