She was given 12 quarters. When she had 6x as many quarters in her bank, she had 24 quarters in it. When she had 9x as many, she had 36 quarters in it. 36-24 is 12.
There are two ways to find or determine for the value of
c. In the first method, we can use addition and subtraction to isolate the
variable c from the other variables. In the second method, we can use the
transposition of variables to isolate the variable c from the other variables.
So solving for the value of c:
<span>Using 1st method: Addition and Subtraction</span>
We are given:
240 = 6 z + c
Simply subtract 6 z on both sides:
240 – 6 z = 6 z + c – 6 z
Cancelling 6 z – 6 z on the right side:
240 – 6 z = c
or
c = 240 – 6 z
<span>Using the 2nd method: Transposition</span>
240 = 6 z + c
What we are going to do here is to simply transpose the
variable 6 z from the right side to the left side of the equation so that we
are left with c alone on the right side. Always remember that when we
transpose, the symbol becomes opposite. That is:
240 + (- 6 z) = c
240 – 6 z = c
or
<span>c = 240 – 6 z</span>
Answer:
n-5
Step-by-step explanation:
..................
Answer:
37.5%
Step-by-step explanation:
15 (total number of correct answers)
divided by
40 (total questions)
= 0.375
you now want to mltiply by 100
0.375 x 100
37.5
therefore Bernie has a percentage of 37.5% or when rounded, he has a 38%.