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3 years ago

Which set of sides would make a right triangle?

Mathematics

1 answer:

ella [17]3 years ago

5 0

C because 5 , 10 , 1) and 20 go along

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Which variable expression represents the word phrase?

slavikrds [6]

I think the answer is A sorry if wrong

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3 years ago

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What is the CONSTANT in the expression 3k + 12?

levacccp [35]

Answer: 12

Step-by-step explanation:

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3 years ago

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The police uses a speed gun to monitor one part of the highway. During one hour, 6 out of 25 cars were traveling above the speed

Oksanka [162]

24% of the cars were travelling above the speed limit.

Step-by-step explanation:

Given,

Total cars monitored = 25

Cars traveling above the speed limit = 6

Percent of cars traveling above speed limit = $\frac{Cars\ travelling\ above\ speed\ limit}{Total\ cars\ monitored}*100$

Percent of cars = $\frac{6}{25}*100\\$

$Percent\ of\ cars=\frac{600}{25}\\Percent\ of\ cars=24\%$

24% of the cars were travelling above the speed limit.

Keywords: percentage, division

Learn more about division at:

#LearnwithBrainly

7 0

4 years ago

2(x+4)=4x+16 2x+8=4x+16 -2x+8=16 -2x=24 X=-12

Goryan [66]

Well, you have already said that X is equal to -12 so, we can still check your answer using substitution.
X = -12
2(X + 4) = 4x + 16
2((-2) + 4) = 4(-2) + 16
2(2) = -8 + 16
4 = 8

3 0

3 years ago

A 20-ft-long wire is used to support a television antaans. The wire is connected to the

MariettaO [177]

Answer:

The distance of base of wire to the base of tower is 13.27 ft

Step-by-step explanation:

Given as :

The measure of wire connected between base ad antenna top = 20 ft

The wire is connected to the antenna on tower at height h = 15 ft above the ground

Let The distance of base of wire to the base of tower = x ft

Let the angle drawn on ground = Ф

Now, According to question

In figure AOB

Sin angle = $\dfrac{\textrm perpendicular}{\textrm hypotenuse}$

i.e SinФ = $\dfrac{\textrm AB}{\textrm BO}$

Or, SinФ = $\dfrac{\textrm h}{\textrm 20}$

Or, SinФ = $\dfrac{\textrm 15}{\textrm 20}$

Or, SinФ = $\dfrac{\textrm 3}{\textrm 4}$

or, Ф = $sin^{-1}(\frac{3}{4})$

∴ Ф = 48.5°

Now, Again from figure

Tan angle = $\dfrac{\textrm perpendicular}{\textrm base}$

i.e TanФ = $\dfrac{\textrm AB}{\textrm OA}$

Or, Tan 48.5° = $\dfrac{\textrm h}{\textrm x}$

Or, 1.13 = $\dfrac{\textrm 15}{\textrm x}$

∴ x = $\dfrac{\textrm 15}{\textrm 1.13}$

i.e x = 13.27 feet

So, The distance of base of wire to the base of tower = x = 13.27 ft

Hence, The distance of base of wire to the base of tower is 13.27 ft Answer

5 0

4 years ago