2 years ago

Is 3x-22=-3x+8 no solution?

Mathematics

1 answer:

aleksley [76]2 years ago

6 0

It has one solution which is X=5

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DedPeter [7]

Answer:

Step-by-step explanation:

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2 years ago

Andrew wants to measure the height of a traffic light. He walks exactly 20 feet from the base of the traffic light and looks up.

slava [35]

Answer-

The height of the traffic light is 21.8 feet.

Solution-

As shown in figure, we can see the right triangle formed from the situation,

From the question,

BC = the distance walked by Andrew from the traffic light = 20 feet

Height of Andrew's eye = 5 feet

Height of the traffic light = AB + Height of Andrew's eye

From the properties of triangle,

$\Rightarrow \tan \theta =\frac{Height}{Base}$

$\Rightarrow \tan C =\frac{AB}{BC}$

$\Rightarrow AB=\tan C\times BC$

$\Rightarrow AB=\tan 40\times 20$

$\Rightarrow AB=16.8$

Therefore, height of the traffic light = AB + Height of Andrew's eye = 16.8+5 = 21.8 feet

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3 years ago

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Solve for x. 8x + 13 12x +7>>

Vladimir79 [104]

ANSWER:

As they are alternate exterior angles, so they must be equal.

8x + 13 = 12x + 7

8x - 12x = 7 - 13

- 4x = - 6

x = 3/2.

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2 years ago

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Simplify the expression

Anni [7]

i believe the correct answer would be x12/8.

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3 years ago

Find the slope of the line that passes through (9, 4) and (4, 12).

dezoksy [38]

Answer:

-8/5 = -1 and 3/5

Step-by-step explanation:

slope = change in y/change in x = (4-12)/(9-4) = -8/5 = -1 and 3/5

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2 years ago

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