3 years ago

For khan academy . Need answer immediately

Mathematics

1 answer:

kolbaska11 [484]3 years ago

8 0

It's easy just use y=mx+b form ok?

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Reid is taking piano and trumpet lessons. He likes the piano more, and last month

castortr0y [4]

Answer:

he would have spent 10 hours on the piano.

Step-by-step explanation:

every time he practices he practices two more hours on the piano then on the trumpet times that by two and you have your answer

7 0

3 years ago

Find the equation of the line that passes through the point (7,5) and is perpendicular to the line 2x - 3y=6

balu736 [363]

$(7,5);\ \ \ \ 2x - 3y=6 \ \ / subtract \ 2x \ from \ each \ side \\ \\-3y = -2x + 6\ \ / divide \ each \term \ by \ (-3) \\ \\ y = \frac{2} {3}x -2\\ \\ The \ slope \ is :m _{1} = \frac{ 2}{3} \\ \\ If \ m_{1} \ and \ m _{2} \ are \ the \ gradients \ of \ two \ perpendicular \\ \\ lines \ we \ have \\\\\ m _{1}*m _{2} = -1$

$\frac{2}{3}\cdot m_{2}=-1\ \ / \cdot (\frac{3}{2})\\\\m_{2}=-\frac{3}{2}\\\\Now \ your \ equation \ of \ line \ passing \ through \ (7,5) would \ be: \\ \\ y=m_{2}x+b \\ \\5=-\frac{3}{2}\cdot 7 + b \\ \\ 5= -\frac{21}{2}+b\\ \\b=5+\frac{21}{2} \\ \\b= \frac{10}{2}+\frac{21}{2}\\ \\b= \frac{31}{2}\\\\b=15.5 \\ \\ y = -\frac{3}{2}x +15.5$

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3 years ago

What is 194610 ÷ 26 plrase show work

coldgirl [10]

7,485 just do long division

5 0

3 years ago

Read 2 more answers

How many of these equations have the solution 2 = 12?

tino4ka555 [31]

Step-by-step explanation

i don't understand option B