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Marina86 [1]
3 years ago
13

PLS HELP.

Mathematics
1 answer:
Serggg [28]3 years ago
7 0
<h3>Answer:  4 feet</h3>

=======================================================

Work Shown:

See below for the diagram.

(person height)/(person shadow) = (tree height)/(tree shadow)

x/3 = 6/4.5

x*4.5 = 3*6

4.5x = 18

x = 18/4.5 ...... dividing both sides by 4.5

x = 4

The boy is 4 feet tall.

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All the roots of the provided function If f(1) is equal to the zero are -3, -1 and 1.

<h3>What is polynomial?</h3>

Polynomial equations is the expression in which the highest power of the unknown variable is n (n is real number).

The function given in the problem is,

f(x)=x^3+3x^2-x-3

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f(1)=(1)^3+3(1)^2-(1)-3\\f(1)=1+3-1-3\\f(1)=0

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brainly.com/question/24380382

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