1_ 210+90= 300
2_ it's prime:
[1,19]
good luck
H = 180 - (27+87)
= 180 - 114
= 66
Answer:
The rate of change in the submarine's elevation is 26.0 feet per second.
Step-by-step explanation:
She begins 151 feet below sea level
Thus, her initial point is y₁ = 151 feet below sea level
i.e. at t₁=0 seconds, y₁ = 151 feet below sea level
After descending for the 3 seconds, she is 229 feet below sea level.
Thus, her second point is y₂ = 229 feet below sea level after 3 seconds
i.e. at t₂=3 seconds, y₂ = 229 feet below sea level
The rate of change is basically the slope. Thus, the rate of change can be obtained by taking the slope.
slope = rate of change = (y₂ - y₁)/(t₂ - t₁)
= (229 - 151) / (3 - 0)
= 78/3
= 26.0
Therefore, the rate of change in the submarine's elevation is 26.0 feet per second.
Answer:
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Step-by-step explanation:
what is the question??
X² + 10x + 25 = 16
x² + 10x + 25 - 16 = 0
x² + 10x + 9 = 0
(x + 1)(x + 9) = 0
x(x+9) + 1(x+9) = 0
x² + 9x + x + 9 = 0
x² + 10x + 9 = 0
(x + 1) = 0
x = -1
(x + 9) = 0
x = -9