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3 years ago

I need help pls asap!!

Mathematics

1 answer:

Vera_Pavlovna [14]3 years ago

4 0

Answer:

No, Electric Pole is 40 ft

Step-by-step explanation:

tan 66.8° = $\frac{x}{15}$

x = 35

but that is from the top of Danny, so you need to add 5 (his height)

Electric Pole is 40 ft

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Write 6.8167 correct to 3 significant figures.

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Answer:

6.82

Step-by-step explanation:

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3 years ago

At her first visit to the doctor, Maggie weighed 67. Nine pounds. Her next visit, she gained 13. 45 pounds. How much does she we

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Maggie weighs 81.35 pounds now.

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3 years ago

Sofia wants to determine the width of a lake that corresponds to segment DE in the diagram. She marks segment BC because she kno

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21.6

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3 years ago

Write an equation of the perpendicular bisector of the segment with endpoints Q(−2,0)

olga nikolaevna [1]

The equation of perpendicular bisector of QR is:

$y = -\frac{2}{3}x+\frac{22}{3}$

Step-by-step explanation:

Given points are:

$Q(-2,0)\ and\ R(6,12)$

First of all, we have to find the slope of the given line

So,

$m = \frac{y_2-y_1}{x_2-x_1}$

Here

(x1,y1) = (-2,0)

(x2,y2) = (6,12)

Let m1 be the slope of QR:

Then

$m_1 = \frac{12-0}{6+2}\\= \frac{12}{8}\\= \frac{3}{2}$

Let m2 be the slope of perpendicular bisector

We know that the product of slopes of two perpendicular lines is -1

$m_1.m_2 = -1\\\frac{3}{2}.m_2 = -1\\m_2 = -1 * \frac{2}{3}\\m_2 = -\frac{2}{3}$

The bisector will pass through the mid-point of QR

$M = (\frac{x_1+x_2}{2} , \frac{y_1+y_2}{2})\\M = (\frac{-2+6}{2}, \frac{0+12}{2})\\M = (\frac{4}{2}, \frac{12}{2})\\M = (2,6)$

Slope-intercept form of equation is:

$y = m_2x+b$

Putting the value of slope

$y = -\frac{2}{3}x+b$

Putting (2,6) in the equation

$6 = -\frac{2}{3}(2)+b\\6 = -\frac{4}{3}+b\\b = 6+\frac{4}{3}\\b = \frac{18+4}{3}\\b = \frac{22}{3}$

So,

$y = -\frac{2}{3}x+\frac{22}{3}$

Hence,

The equation of perpendicular bisector of QR is:

$y = -\frac{2}{3}x+\frac{22}{3}$

Keywords: Mid-point, equation of line

Learn more about equation of line at:

#LearnwithBrainly

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3 years ago

Mary rolled three 1-6 cubes at the same time . She rolled 5,1 and 6 . Which list shows all the possible three-digit numbers she

Aleksandr [31]

Answer:

list no shows by three cube={1,1,1}

Step-by-step explanation:

three cubes rolled at same time

it gives these value {1,1,1},{1,,1,2},{1,1,3},{1,1,4},{1,1,5},{1,1,6},{1,2,1},{1,3,1},{1,4,1},{1,5,1},{1,6,1},{2,1,1},{3,1,1},{4,1,1},{5,1,1},{6,1,1}

list no shows by three cube={1,1,1} answer

7 0

4 years ago