MATHEMATICS HIGH SCHOOL

Solve for x:

-42 = -7x

Answers

Answer 1

Answer:

Answer:

x=6

Step-by-step explanation:

-7x= -42

x= -42/-7

x=6

Answer 2

Answer:

Answer:

x=6

Step-by-step explanation:

-42= -7x divide -7 on both sides

6=x negatives cancel out

x=6 flip (not necessary but teachers like it this way)

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If the diameter of a circle is 8 ft what will the radius be???

Answers

The radius is the point from the center of a circle to the outer edges. Therefore the measurements will be half the circumference or diameter. Therefore the Radius is 4ft

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5x+y=2 2x3y=62
whatn is x and y

Answers

5x + y = 2 ⇒ 10x + 5y = 4
2x + 3y = 62 ⇒ 10x + 15y = 310
         -10y = -306
      -10 -10
   y = -30.6
      5x - 30.6 = 2
   +30.6 +30.6
      5x = 32.6
   5 5
      x = 6.52
   (x, y) = (6.52, -30.6)

ok sure!
first we have to find y

so...
lets start with the first one:

5x+y=2 (we cannot have two variables together so:
5x+y=2
-y =-y so.. now we have 5x= 2-y (but we must get y positive and by itself!)
-2 = -2
so: now you have
5x-2=-y but need a positive variable so multiply each side by a (-1)
(-1) 5x-2=-y (-1) So..
-5x +2 =y so now we know Y!
therefore whenever you see why in the next problem insert in its place: -5x +2

I hope it helps!! :)

3.Solve the formula for the area of a parallelogram the height, h.
A=b xh
h =
(use the / symbol to show division)

Answers

Answer:

The answer would be A/B=H

Step-by-step explanation:

To get rid of the B that is connected to the H, you would do the opposite of what they used. Meaning since the two were multiplied you would divide them. So, you would take your b and divide it on both sides of the equal sign. B and B cancels each other out so you are left with A/B which equals H.

Literal Equations:
C=2πr solve for r

Answers

$\sf C = 2\pi r\n\n Divide~both~sides~by~2\pi\n\n\boxed{\bf{r = (C)/(2\pi)}}$

Hope this helped! If you have any other questions or would like further explanation just let me know!! :)

Given B is between A and C, find the value of x if AB = 22, BC = 16x, and AC = 182.