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gladu [14]
3 years ago
11

Which of these cannot represent the lengths of the sides of a right triangle A.3ft, 4ft, 5ft B.6in, 8in, 10in C.16cm, 63cm, 65cm

, D.8m, 9m, 10m
Mathematics
1 answer:
Feliz [49]3 years ago
4 0

Answer:

Option D does not represent the lengths of side of right angled ∆

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A wall with a height of 20 feet is braced with a support post that forms a 30 degree angle with the top of the wall. What is the
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The length of the support post is 40 ft.

<u>Solution:</u>

Given, the height of the wall is 20 ft; support post forms 30 degree

Refer the attached image

Let us name the triangle as ABC where AB is the wall (opposite side) of 20 ft and \angle A is 30 degree (\theta) and AC is the length of the post.

To find: The length of the post (AC)

we know the formula, sin\theta=\frac{opp}{hyp} (trigonometric formula)

On substituting the values we get,

\Rightarrow sin(30^{\circ})=\frac{20}{AC}

The value of sin 30 degree is 0.5

\Rightarrow 0.5=\frac{20}{AC}\rightarrow AC=\frac{20}{0.5}\rightarrow AC=40 ft

3 0
3 years ago
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luda_lava [24]

Answer:

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Step-by-step explanation:

The formula for circumference is the radius multiplied by 2\pi. In this case, 4\cdot 2\pi=8\pi. Hope this helps!

6 0
2 years ago
Simplify the expression (128x^5/8x)^1/2
solong [7]

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Step-by-step explanation:

Simplify x5 /8. Than, Equation at the end of step  1  :   x5   ——) • x)1) ÷ 4   8  

Step  2  :  2.1     16 = 24  (16)1 = (24)1 = 24  2.2    x6 raised to the 1 st power = x( 6 * 1 ) = x6

Step  3  :     24x6  Simplify   ————    4  

Dividing exponents :   3.1    24   divided by   22   = 2(4 - 2) = 22

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5 0
3 years ago
a teacher plans a simulation to estimate the probability that a student will pick a vowel out of a bag of 26 tiles, each with a
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Answer:

Yes

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Here the results are recorded for 120 times at random.

Since number of trials is large, we can expect a reliable and accurate results representing the actual probability.

This is because more the number of trials, the less would be the margin of error i.edeviationfrom the expected probability would be minimum

8 0
3 years ago
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Evaluate 4 - 6 + 9 - 3
omeli [17]
4 - 6 + 9 - 3 

= 4
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3 years ago
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