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3 years ago

A tree casts a 20 foot shadow. brian is 6 feet tall and casts a 4 foot shadow. how tall is the tree.

2 answers:

8 0

Brian and shadow to Z point math hypotenuse of a right triangle . Tree and shadow to the right-angled triangle hypotenuse well . Shadow length depends on the angle of incidence of solar prmieni . The angle of Padania , in both cases the same joke . So tangents hypotenuse same joke .

tg = a/b
Brian
a/b = 6ft/4ft = 1,5

A tree
a/b = a/20ft

a/20ff = 3/2 We multiply the cross

2a = 60ft
a = 30tf

Answer : The tree is 30 feet

Brrunno [24]3 years ago

5 0

30 ft

Ratio is

6/4 = 1.5

Times that by the shadow

1.5 x 20 = 30

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2 years ago

What is the answer to the question

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The equation of the parallel line is y = –2x – 11.

Solution:

Given equation of the line is y = –2x – 5.

Slope of this line is $(m_1)$ = –2

To write the equation parallel to this line and passes through (–4, –3).

If two lines are parallel, then they have the same slope.

$\Rightarrow m_1=m_2$

$\Rightarrow m_2 =-2$

Point-slope formula:

$y-y_1=m(x-x_1)$

Substitute the given values in the formula, we get

$y-(-3)=-2(x-(-4))$

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3 years ago

Help please Introduction to statistics: mastery test

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Answer:

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Step-by-step explanation:

We use the binomial approximation to the normal to solve this question.

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Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

$E(X) = np$

The standard deviation of the binomial distribution is:

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Normal probability distribution

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

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