3 years ago

PLEASE HELP: 97 POINTS + BRAINLIEST

Mathematics

1 answer:

Anton [14]3 years ago

4 0

Answer:

3.77 rounded is 3.8

Step-by-step explanation:

0=-4.9t^2+70

+4.9t^2

4.9t^2=70

divided by 4.9 on (both 4.9 and 70)

t^2=squareroot 14.285= 3.77

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The measures of angles A, B, and C are respectively 21°, 125°, and 34°

Step-by-step explanation:

Equations

We are given some conditions applying to the internal angles on a triangle ABC.

The measure of angle A is 13 less than the measure of angle C.

The measure of angle B is 11 less than 4 times the measure of angle C

Let x = measure of angle C

The first conditions states:

$m\angle A = x-13$

The second conditions states:

$m\angle B = 4x-11$

The sum of all angles must be 180°, thus:

$x - 13 + 4x - 11 + x = 180$

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6x -24 = 180

Adding 24:

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Dividing by 6:

x = 204/6

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