Answer:
d =
Step-by-step explanation:
1) To solve for d, isolate it in the equation. So, to get rid of the
with the d, add
to both sides.

Thus, d =
.
Answer: F=bill for first shop=4S-$630; S=bill for second shop
.
F+S=$3265 Substitute for F
4S-$630+S=$3265
5S=$3895
S=$779 ANSWER 1: The bill for the second shop was $779
.
F=4S-$630
F=4($779)-$630
F=$3116-$630=$2486 ANSWER 2: The bill for the first shop was $2486.
.
CHECK:
F+S=$3265
$2486+$779=$3265
$3265=$3265
explanation:
Answer:
Question?
Step-by-step explanation:
The circumference of a circle can be calculated using the following formula:

Where "C" is the circumference of the circle and "d" is the diameter of the circle.
According to the information given in the exercise, the diameter of this circle is:

Knowing the diameter, you only need to substitute it into the equation. Remember that you need to use

Then:

The answer is: