2 years ago

Solve: 51 ÷ [(-15) + (-2)

Mathematics

1 answer:

kari74 [83]2 years ago

3 0

Dude at the top correct

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In the form of a paragraph, explain the difference between a ray and a segment.

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bright pools is building a rectangular pool at a new house. The perimeter of the pool has to be 94 feet and the length has to be

bekas [8.4K]

Answer:

$\displaystyle 15\:feet\:wide \\ 32\:feet\:long$

Step-by-step explanation:

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3 years ago

An object at the top of a building with height 110 feet is thrown upward with an initial speed of 23 ft/s. Find its position z(t

alina1380 [7]

Answer:

Step-by-step explanation:

Given

Height of building is $h=110\ ft$

Initial upward velocity $u=23\ ft/s$

height of object is given by

$z(t)=ut+\frac{1}{2}gt^2$

but building is already at a height of 110 ft so z(t) must be given by

$Z(t)=ut+\frac{1}{2}(-g)t^2+110$

$Z(t)=23\times t-\frac{1}{2}\times 9.8\times t^2$

$Z(t)=-16t^2+23t+110$

Time when it hits is given by when Z(t)=0[/tex]

$-16t^2+23t+110=0$

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$t=\frac{-23\pm 87}{-32}$

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