Question

solve 2sqrtx+7-10=-8

Answer 1

\[2\sqrt{x+7} - 10 = -8\]
add 10 to both sides
\[\implies 2\sqrt{x+7} = -8 + 10\]
combine like terms
\[\implies 2\sqrt{x+7} = 2\]
divide both sides by 2
\[\implies \sqrt{x+7} = 1\]
square both sides
\[\implies x + 7 = 1\]
subtract 7 from both sides
\[\implies x = 1 - 7\]
combine like terms
\[x = -6\]
does that help?

Answer 2

wow...very good..

Answer 3

very easy to understand.

Answer 4

wonderful ^_^

Answer 5

may you answer one more?

Answer 6

What is the equation of the line that passes through the point (0, 3) and is perpendicular to the line y = 2x + 3?

Answer 7

ive been stuck for hours..

Answer 8

what is the slope of y = 2x + 3

Answer 9

3?

Answer 10

y = mx + b

m is the slope

Answer 11

the slope is the coefficient of x

Answer 12

ok im with you.

Answer 13

i feel so stupid -__-

Answer 14

so what's the slope?

Answer 15

2 :0?

Answer 16

the slope is 2

Answer 17

right...so what is the slope of the perpendicular line?

Answer 18

3? may you solve this then let me review? that is my strongest way of learning

Answer 19

the slope of the perpendicular line is negative reciprocal

Answer 20

and im also kind of studying too lol so i cant do it in one go