How do you solve 4m + (–1) = 2

Step-by-step explanation:

That question is asking you find the value of m. What you do is, remove the brackets by multiplying + and - out. You will get

4m - 1=2, moving minus 1 to the right hand side, so that you have the 4m on its own side. Minus 1 become positive, if a number cross the equal sign the sign changes.

You will now have

4m = 2 +1

4m = 3

Diving through with 4 gives

m = 3/4

And that's the answer

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.