Answer:
- At least 10 hours
- No more than 7 feet
- At least $7.5
- More than 3 players
Step-by-step explanation:
1.
- 20x + 100 ≥ 300
- 20x ≥ 200
- x ≥ 200/20
- x ≥ 10
At least 10 hours
2.
- 2(8 + x) ≤ 30
- 8 + x ≤ 15
- x ≤ 15 - 8
- x ≤ 7 feet
No more than 7 feet
3.
- 8x + 20 ≥ 80
- 8x ≥ 60
- x ≥ 60/8
- x ≥ 7.5
At least $7.5
4.
- 3(p + 3) > 18
- p + 3 > 18/3
- p + 3 > 6
- p > 6 - 3
- p > 3
More than 3 players
You know that anything times a one is that number, so multiply 2,3, and 4, and then multiply that by one. once you get the answer, put the zeros behind each multiplied number behind your answer, and there you go.
2×3×4= 24×1=24
there are 4 zeros
240,000
Answer:
x = ± 2
Step-by-step explanation:
Given
16 - 2x² = - 64 ( subtract 16 from both sides )
- 2x² = - 80 ( divide both sides by - 2 )
x² = 40 ( take the square root of both sides )
x = ± 
= ± 
= ± 2
Answer:
b = 4, or -4
Step-by-step explanation:
b^2 - 4*4*1 = 0
b^2 = 16
b = 4, or -4
