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evablogger [386]

3 years ago

15

Charlie walks away from a tree along its shadow until his head in in line with the top of his the tree’s shadow. Charlie is stan

ding 15 feet from the base of the tree and 6 feet from the end of the shadow. Charlie is 5 feet tall. What is the height of the tree?

1 answer:

DiKsa [7]3 years ago

5 0

Answer:

36

Step-by-step explanation:

You divide 15 and 5 then multiply it

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Solve for x in the equation x squared + 2 x + 1 = 17.

Papessa [141]

Answer:

$x = - 1 + \sqrt{17}\\and\\x = - 1 - \sqrt{17}\\$

Step-by-step explanation:

given equation

$x^2 +2x +1 = 17$

subtracting 17 from both sides

$x^2 +2x +1 = 17\\x^2 +2x +1 -17= 17-17\\x^2 +2x - 16 = 0\\$

the solution for quadratic equation

$ax^2 + bx + c = 0$ is given by

x = $x = -b + \sqrt{b^2 - 4ac} /2a \\\\and \ \\-b - \sqrt{b^2 - 4ac} /2a$

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in our problem

a = 1

b = 2

c = -16

$x =( -2 + \sqrt{2^2 - 4*1*-16}) /2*1 \\x =( -2 + \sqrt{4 + 64}) /2\\x =( -2 + \sqrt{68} )/2\\x = ( -2 + \sqrt{4*17} )/2\\x = ( -2 + 2\sqrt{17} )/2\\x = - 1 + \sqrt{17}\\and\\\\x = - 1 - \sqrt{17}\\$

thus value of x is

$x = - 1 + \sqrt{17}\\and\\x = - 1 - \sqrt{17}\\$

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What is the distance between -93 and 114 on a number line???

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Step-by-step explanation:

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grandymaker [24]

Answer:

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Step-by-step explanation:

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1 + 0.11 = 1.11

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Answer:

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Step-by-step explanation:

Simplify the following:

8 a + 12 b

Factor 4 out of 8 a + 12 b:

Answer: 4 (2 a + 3 b)

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1.23 is the correct answer

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