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7. -4(2z + 6) - 12 = 4
Simplify.
-8z - 24 - 12 = 4
Simplify.
-8z - 36 = 4
Add 36 to both sides.
-8z - 36 + 36 = 4 + 36
Simplify.
-8z = 40
Divide both sides by -8.
z = -5
8. 3/2(x - 2) - 5 = 19
Simplify.
3/2x - 3 - 5 = 19
Simplify.
3/2x - 8 = 19
Add 8 to both side.
3/2x = 19 + 8
Simplify.
3/2x = 27
Multiply both sides by 2.
3/2x · 2 = 27 · 2
Simplify.
3x = 54
Divide both sides by 3.
x = 18
~hope I helped~
No numbers, is the question correct? Are you factoring?
Answer:
Step-by-step explanation:
look at the pictures. they should help.
when you have a triangle and you are trying to find the exterior angle you need to find the interior angle that is opposite of the exterior angle. they should both add up to 180 because it will be on a straight line. what ever numbers you have left should be for both angles.
Factor them
2a^2-ab-3b^2=(2a-3b)(a+b)
2a^2-5ab+3b^2=(2a+3b)(a+b)
notice tat we have the only common factor is
(a+b)
so
a+b=11
we know that it is a POSITIVE integer
that means that it is from 1 to infinty, not including decimals or NEGATIVES
so like
1,2,3,4,5...
let's look at aour options
a+b=11
our choices are
a is
10,11,12
if we try a=10
10+1=11, yah true
if we try a=11
11+0=11
but 0 is not an integer
we can see that if we keep going to 12,14,15, we will get negative integers for b which is not allowed
a=10 is answer
Answer:
Step-by-step explanation:
You need to remember the Negative exponent rule:
Then, having the equation , you can rewrite it in this form:
Now add 2 to both sides of the equation:
Multiply both sides of the equation by "x":
And finally divide both sides of the equation by 27.
The value of "x" is: