3 years ago

How to factor -10x^2+18+36

Mathematics

1 answer:

Goryan [66]3 years ago

7 0

May this help you!!!!!!!!!!!

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A 6.50 kg crate is suspended from the end of a short vertical rope of negligible mass. An upward force F(t) is applied to the en

borishaifa [10]

Answer:

$F=158.86 N$

Step-by-step explanation:

We are given that

Mass of crate=m=6.5 Kg

Height, $y(t)=(2.80m/s)t+(0.610m/s^3)t^3$

We have to find the magnitude of F when t=4 s

Differentiate w.r.t t

$v=\frac{dy}{dt}=2.8+3(0.61)t^2$

Again differentiate w.r.t t

$a=\frac{dv}{dt}=3\times 2(0.61)t$

$a=3.66tm/s^3$

Substitue t=4

$a=3.66\times 4=14.64m/s^2$

$F-mg=ma$

Where $g=9.8m/s^2$

Substitute the values

$F-6.5\times 9.8=6.5\times 14.64$

$F=6.5\times 14.64+6.5\times 9.8$

$F=158.86 N$

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3 years ago

Write and expression for the phrase, "8 less than k".

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Step-by-step explanation:

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4 years ago

Leah babysat on Saturday for 3 hours and earned $34.50. She babysat for a different family on Sunday for 4 hours and earned $42.

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Answer:

1.00

Step-by-step explanation:

$34.50 divided by 3 equal 11.50 and $42 divided 4 equal 10.50 subtract that and get 1.00 so leah earned a dollar more per hour

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