Answer:
-9
Step-by-step explanation:
2x + 7 = -11
2x = -11 - 7
2x = -18
x = -9
B-(-7)= -1
First negative multiply by negative is POSITIVE.
So: B+7= -1
Subtract 7 from both sides
B= -7-1
B= -8.
Answer: -8.
To Check Answer: Plug in the variable of B in the original equation.
So: -8-(-7)= -1
-8+7= -1
-1= -1
If the Solution works out the answer is right.
Answer:
5.76
Step-by-step explanation:
Easy way to work with percentage is to take the decimal and move it over one to the left and that will give you 10%.
Since you 38.40 move the decimal over one to the left and you'll get 3.84. That is 10%, but since you need 15% divide 3.84 by two to get 5%- that is 1.92.
3.84 (10%) + 1.92 (5%) = 5.76 (15%)
B. 72= 8h
In this case, h would represent 9. 72= 8(9)