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Savatey [412]
3 years ago
8

Find the length here asap

Mathematics
2 answers:
SOVA2 [1]3 years ago
6 0

Answer:

A,  40.16

Step-by-step explanation:

cosθ = adjacent (BC) / hypotenuse (AB)

cos 17° = BC / 42

BC = 40.16

bezimeni [28]3 years ago
6 0

Answer:

\boxed{BC = 40.16}

Step-by-step explanation:

Cos 17 = \frac{adjacent}{hypotenuse}

Where adjacent = BC, hypotenuse = 42

0.959 = \frac{BC}{42}

BC = 0.959 * 42

BC = 40.16

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Vitek1552 [10]
2 and 41/50 as a percent is 282%.
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Shtirlitz [24]
The answer would be 4
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Benjamin threw a rock straight up from a cliff that was 48 ft above the water. If the height of the rock​ h, in​ feet, after t s
fomenos

Answer: It will take 4 seconds  for the rock to hit the​ water.

Step-by-step explanation:

Given : Benjamin threw a rock straight up from a cliff that was 48 ft above the water.

If the height of the rock​ h, in​ feet, after t seconds is given by the equation

h = -16 t^2+ 52 t + 48

To find : Time taken for the rock to hit the​ water.

When rock hit the water height becomes zero , i.e. put h = 0 , we get

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Divide equation by 2 , we get

-8t^2+26t+24=0

The Laue of x for ax²+bx+c =0 is x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}

So , t=\frac{-26\pm\sqrt{(26^{2}-4(-8)(24))}}{2(-8)}

t=\dfrac{-26\pm 38}{-16}\\\\ t=-\dfrac{-26+38}{-16}=-0.75\ \ t=\dfrac{-26-38}{-16}=4

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5 0
3 years ago
8.3 = -0.6 x + 11.3 what is x
finlep [7]

Answer:

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:)

Step-by-step explanation:

5 0
3 years ago
Jess and Wes used to race each other when they were younger. Jess could cover 8
marshall27 [118]

Answer:

160 meters

Step-by-step explanation:

Let call dj  distance run by  Jess    and   dw  distance run by Wes

By Jess courtesy Wes will be  60 meters ahead of Jess

Let call t the time in which both runners are at the same point, which in fact is when both distances are equal

dj  =  8 m/sec * t        and    dw  =  60  +  5 m/sec * t

Then we make  dj = dw

8*t  =  60 + 5*t

3*t  =  60

t = 20 sec

Now passed 20 sec  dj   =   8 * 20   = 160 m

and   dw = 60 + 5*20   dw  =  160 m

5 0
3 years ago
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