$k:y=m_1x+b_1;\ l:y=m_2x+b_2\\\\k\ \perp\ l\iff m_1m_2=-1\\====================================\\k:y=-x-2;\ l:y=mx+b\\\\k\ \perp\ l\iff-1\cdot m=-1\Rightarrow m=1\\\\l:y=1x+b\to y=x+b\\\\(4;\ 1)\to substitute\ x=4\ and\ y=1\ to\ y=x+b:\\\\4+b=1\\b=1-4\\b=-3\\\\Answer:y=x-3$

5 0

3 years ago

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The following formula gives the circumference C of a circle with radius r.

Veronika [31]

Answer:

The answer is 125.6

Step-by-step explanation:

C= 2x3.14x20

C=6.28x 20

C= 125.6

8 0

2 years ago

Find the measure of line segment CU. <br> A) 27<br> B) 16<br> C) 25<br> D) 21

Ahat [919]

Do you have the answers to the rest/multiple choice part of the test ??

8 0

3 years ago

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An underground mine elevator descends 12% of the total depth every minute. The total depth of the elevator is 75 meters below th

Katarina [22]

75/100 = 0.75

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12 x 0.75 = 9

* The mine elevator travels a
distance of 9 metres per minute.

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After 2 minutes, the mine elevator
would've travelled 18 metres,
therefore your answer is:

A: -18 metres

5 0

3 years ago

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