Answer:
75 square centimeters
Step-by-step explanation:
Multiply by 10,000
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Answer: 35.2
Step-by-step explanation: To estimate 55 percent of 64, you could round the 55 to 50 percent, and just find half of 64, which is 32. After this, because you only have 5 percent left over, you can take the number you got from 50% of 64 and move the decimal over one place to make it 3.2. Just add that number to 32 and you’ll get your answer.
Answer:
2sqrt(10)
Step-by-step explanation:
radical 40
I rewrite this as sqrt(40) It means the same thing
sqrt(40)
sqrt(4*10)
We know that sqrt(a *b) = sqrt(a) sqrt(b)
sqrt(4) sqrt(10)
2sqrt(10)
Answer:
t₁ = 2,75 sec
Step-by-step explanation:
The ball will get h maximum when dh/dt ( its vertical component of the speed is equal to 0. At this moment the ball has flown half of the total flight time
Then
h(t) = - 4t * ( 4*t - 11 )
h(t) = - 16*t² + 44*t
Taking derivatives on both sides of the equation we get:
dh/dt = - 32*t + 44
dh/dt = 0 ⇒ -32*t + 44 = 0
t = 44/32 ⇒ t = 1,375 s
So twice this time
2*t = 2 * 1.375
Total time t₁ = 2,75 sec