The additive inverse of something is just what the certain number needs to equal 0. In this case 3+5=8 inches total. In order to get 8 inches to 0 you need to add -8 to 8. So the additive inverse is -8 inches (Always remember your units, in this case inches) Hope this helped :)
Step-by-step explanation:
Number 1
Number 2
The first question is.
6 + 6 = 12
n is the same thing on both sides of the equation
6 + 6 - n = 12 - n
You are taking an equal amount off both sides so the left and right sides are both equal still. Try it. Let n = 0.5
6 + 6 - 0.5 = 12 - 0.5
6 + 5.5 = 11.5
11.5 =? 11.5
They are both equal. In algebra a letter in an equation like this one can't change values if that letter is on opposite sides of the equation.
Six
9.5 y + 600 < 900
9.5 y = 300
y < 300 / 9.5
y < 31.57
If there's no sales tax where he lives, he can take 31 students. If it is possible to take 0.57 of a student then he can take 32 (but of course it isn't possible).
-14x=70
Dive both sides by -14, and you end up with:
x=-5
hope this helps!
The answer: " x = 5 " .
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Explanation:
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Given: " x = √(15 <span>− 2x) " ; Solve for "x" ;
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"Square" each side of the equation:
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</span> → (x)² = [√(15 − 2x) ] ² ;
→ x = 15 − 2x ;
Now, add "2x" to each side of the equation:
→ x + 2x = 15 − 2x + 2x ;
→ 3x = 15 ;
Now, divide each side of the equation by "3" ;
to isolate "x" on one side of the equation; & to solve for "x" ;
→ 3x / 3 = 15 / 3 ;
→ " x = 5 " .
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