Answer:
Step-by-step explanation:
Let he speed of the boat on the lake is x.
<u>Considering the speed of the current it will take him:</u>
- 22.5/(x + 6) + 22.5/(x - 6) = 9
- 2.5 / (x + 6) + 2.5 / (x - 6) = 1
- 2.5(x - 6 + x + 6) = (x + 6)(x - 6)
- 2.5*2x = x² - 36
- x² - 5x - 36 = 0
- x = (5 ± √(5² + 4*36))/2 = (5 ± 13) / 2
- x = (5 + 13)/2 = 9 mph (negative root is discarded as the speed should be positive)
Answer:
im pretty sure its (B.) ~p ---> ~q
Step-by-step explanation:
Answer:
The Ratios are Proportional
Step-by-step explanation:
Let,
R1 = 48 / 72 ----- (1)
R2 = 6/9 ------ (2)
If we divide right hand side of above equation by 8, we get,
Therefore, it means that, in simplified form, both ratios are same and hence proportional.
R1 : R2 = 6/9 : 6/9
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Answer:
-5y ≥ -5x + 70
Step-by-step explanation:
Slope-Intercept form is y = mx + b
To turn this inequality into slope-intercept form, you need to subtract 5x from both sides. This makes the 5x negative because of the minus sign. The original minus sign in front of 5y stays there as a negative sign. So the inequality becomes -5y ≥ -5x + 70.
