$~~~~~x^2 -2 = 47\\\\\implies x^2 = 47 +2 \\\\\implies x^2 = 49\\\\\implies x = \pm\sqrt{49}\\\\\implies x = \pm 7\\\\\text{Hence, }~ x = 7,~~ x = -7$

7 0

1 year ago

Which expression represents the sum of (12y-8x) and (6x-24y)

lisabon 2012 [21]

Answer:

B -2x - 12y

Step-by-step explanation:

-8x + 6x = -2x

12y - 24y = -12y

-2x - 12y

5 0

3 years ago

GEOMETRY URGENT HELP NEEDED

son4ous [18]

First we find the measurement of dark dot .

ANd for that we have to use the formula of the angle formed by the intersection of chord .

Let the dark dot be t.

So we have

$t =\frac{1}{2} (96+66)=81$

t and z are linear pair and sum of angles of linear pair =180 degree.

So we get

$t+z=180 \\ 81+z =180 \\ z = 180-81 =99 degree$

4 0

3 years ago