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svetlana [45]
3 years ago
6

PLEASE ANSWER CORRECTLY!!!!!!!!!!!!!!NEED AS SOON AS POSSIBLE

Mathematics
1 answer:
Leokris [45]3 years ago
8 0

Answer:

Therefore,

v=9\ meter

Step-by-step explanation:

Given:

GF = 12

GE = 16

DF = 12

CF = v

To Find:

v = ?

Solution:

In  Δ GFC and Δ GED

∠ E ≅  ∠ F …………..{ measure of each angle is 90° given }

∠ G ≅ ∠ G    ……….....{Reflexive Property}      

Δ GFC ~ Δ GED ….{Angle-Angle Similarity test}

If two triangles are similar then their sides are in proportion.

\frac{GF}{GE} =\frac{FC}{ED} =\frac{GC}{GD}\ \textrm{corresponding sides of similar triangles are in proportion}\\  

On substituting the given values we get

\frac{12}{16} =\frac{v}{12}\\\\v=\frac{144}{16}=9\\\\\therefore v=9\ meter

Therefore,

v=9\ meter

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The students in Mr. Wilson's Physics class are making golf ball catapults. The
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Answer:

Part a) About 48.6 feet

Part b) About 8.3 feet

Part c) The domain is 0 \leq x \leq 48.6\ ft and the range is 0 \leq y \leq 8.3\ ft

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we have

y=-0.014x^{2} +0.68x

This is a vertical parabola open downward (the leading coefficient is negative)

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y is the flight of the balls in feet

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-0.014x^{2} +0.68x=0

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x=\frac{-0.68(+/-)\sqrt{0.68^{2}-4(-0.014)(0)}} {2(-0.014)}

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0=-0.028x +0.68

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0.028x=0.68

x=24.3

<em>Alternative method</em>

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we know that

A  reasonable domain is the distance between the two x-intercepts

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0 \leq x \leq 48.6\ ft

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we have the interval -----> [0,8.3]

0 \leq y \leq 8.3\ ft

All real numbers greater than or equal to 0 feet and less than or equal to 8.3 feet

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