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3 years ago

13

A person standing 20 feet from a streetlight casts a shadow as shown. How many times taller is the streetlight than the person?

Assume the triangles are similar.

1 answer:

alexandr402 [8]3 years ago

3 0

Attached solution and steps using proportions.

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The rounding rule for the correlation coefficient requires three decimal places true or false

mihalych1998 [28]

<span>Round the value of r to 3 decimal places = Answer is True</span>

6 0

3 years ago

Read 2 more answers

It's a question from real and complex numbers which I can't solve. so someone PLZ HeLp

Semmy [17]

Answer:

$\frac{1}{5}$

Step-by-step explanation:

Using the rules of exponents

$a^{m}$ × $a^{n}$ = $a^{(m+n)}$ , $\frac{a^{m} }{a^{n} }$ = $a^{(m-n)}$ , $(a^m)^{n}$ = $a^{mn}$

Simplifying the product of the first 2 terms

$\frac{a^{p^2+pq} }{a^{pq+q^2} }$ × $\frac{a^{q^2+qr} }{a^{qr+r^2} }$

= $a^{p^2-q^2}$ × $a^{q^2-r^2}$

= $a^{p^2-r^2}$

Simplifying the third term

5( $(a^p+r)^{p-r}$

= 5 $a^{(p+r)(p-r)}$ = 5 $a^{(p^2-r^2)}$

Performing the division, that is

$\frac{a^{(p^2-r^2)} }{5a^{(p^2-r^2)} }$ ← cancel $a^{(p^2-r^2)}$ on numerator/ denominator leaves

= $\frac{1}{5}$

4 0

3 years ago

Radius of a circular ground is 21m. Find.

trapecia [35]

The circumference of a circle of radius $r$ is

$C=2\pi r$

So, in your case, the circumference is

$C=2\cdot \pi \cdot 21 = 42\pi$

The circumference is actually the length of the "perimeter", so the answer to questions 1 and 2 looks the same actually

6 0

3 years ago

Someone help okeseeee

sveticcg [70]

Answer:

volume=lxbxh

=6*6*12

=432cm^2

6 0

3 years ago

a fruit farm grows 4486 apple trees in 5 different Orchards each Orchard has about the same number of apples trees which is the

wariber [46]

Answer:

897.2

Steps:

1) 4486 divided by 5 = 897.2

2) Estimate:

We know that if the number is less than 5 the number in front of it stays the same, so the answer will be 897.

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3 years ago