Step 1 remove paranthesis
(-30a-105)=-15
Step 2: Move constant to RHS (take not negative sign is removed if sides are changed and vice versa)
-30a=-15+105
-30a=90
Step 3: Simplify
-a=3
Step 4: remove negative sign from variable
a=3
Answer:
19
Step-by-step explanation:
The vertical axis of a histogram indicates the total amount of people that meet the weights indicated in the x-axis in the analysed population. From data we can construct the following table:
x-axis y-axis
115 1
135 4
155 3
175 1
195 5
215 2
235 3
So there are: 1+4+3+1+5+2+3 = 19 team members included in the histogram.
Answer:
B. 5a + 10
Step-by-step explanation:
Given:
5(a+2)
Open parenthesis
5(a+2)
= 5a + 10
A. 5a + 2
Wrong option
B. 5a + 10
Correct option
C. a + 10
Wrong option
D. 5 + (a + 2)
= 5 + a +2
= a + 7
Wrong option
I think D pretty positive because 0 and a negative aren't a natural number
