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professor190 [17]
2 years ago
7

HURRY HELP PLS‼️‼️‼️

Mathematics
1 answer:
Brums [2.3K]2 years ago
6 0

Answer:

Step-by-step explanation:

To solve this problem you need the function

 

h(t) = -16t2 + v0t + h0

where t = time

v0 is the initial velocity, which in our case is 0

h0 = initial height, which in our case is 256

h(t) = 0 since we want to know when the ball will hit the ground.

 

0 = -16 t2 + 256

 

And we can solve for t

 

If we rearrange the terms we see that this is a difference of 2 squares

0 = 256 - 16t2

 

0 = (16-4t)(16+4t)

Setting each factor = 0

16-4t=0       16+4t=4

t = 4             t = -4

 

The second solution is discarded as time cannot be negative.

 

So the ball will hit the ground in 4 seconds.

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k = 4

Step-by-step explanation:

7k - 6 = 2k + 14

(7k - 2k) - 6 = (2k - 2k) + 14

5k - 6 = 14

5k (- 6 + 6) = 14 + 6

5k = 20

5k/5 = 20/5

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3 years ago
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Reason:A full moon is a sphere, a crescent moon looks like a banana, and sometimes you can't see the moon at all.

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2 years ago
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aksik [14]

Answer:

Angle of Depression and Angle of Elevation

One application of the trigonometric ratios is to find lengths that you cannot measure. Very frequently, angles of depression and elevation are used in these types of problems.

Angle of Depression: The angle measured down from the horizon or a horizontal line.

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What if you placed a ladder 10 feet from a haymow whose floor is 20 feet from the ground? How tall would the ladder need to be to reach the haymow's floor if it forms a 30∘ angle with the ground?

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or Solve this system of equations by graphing. First graph the equations, and then type the solution. y= 7/4 x–3 y=x
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Answer:

y =  \frac{7}{4} x - 3 \\ y = x \\ y = \frac{7}{4} y - 3 \\ y - \frac{7}{4} y =  - 3 \\  -  \frac{3}{4} y =  - 3 \\ 3y = 12 \\ y =  \frac{12}{3}  \\ y = 4 = x

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cluponka [151]

Answer:

40 and 20

Step-by-step explanation:

  • Uncle Jason's age = x
  • Nephew Ralph age = y
<h3>Solution</h3>

<u>Age now:</u>

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<u>Age 10 years ago: </u>

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<u>Substituting x in the second equation:</u>

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