Answer:
10 + 0.05m; m = 350 minutes
Bob's phone bill will be $27.50
Step-by-step explanation:
$10 + ($0.05 x 350 minutes) = $27.50
X and y
x:y=3:5
or
x/y=3/5
when 4 is subtracted from x and 8 is added to y new ratio is 2:7
(x-4)/(y+8)=2/7
we have
x/y=3/5
(x-4)/(y+8)=2/7
get rid o frationc
x/y=3/5
times both sides by 5y
5x=3y
(x-4)/(y+8)=2/7
times both sides by 7(y+8)
7(x-4)=2(y+8)
7x-28=2y+16
add 28 both sides
7x=44+2y
we have
5x=3y
and
7x=2y+44
multiply first equation by 2 and seecond equaiton by 3
10x=6y and 21x=6y+132
sub 10x for 6y
21x=10x+132
minus 10x both sides
11x=132
divide both sides by 11
x=12
x/y=3/5
12/y=3/5
times both sides by 5y
60=3y
divide both sid esyb 3
20=y
12 and 20
the greater is 20
I think The answer is 2920
Answer:
Step-by-step explanation:
Simplified becomes;
Simplifying further gives;
Answer:
<h2>
x = 19</h2><h2>
</h2>
Step-by-step explanation:
|<----------------- 71 ----------------------->|
E-----------------------F---------------------G
2x + 13 20
find: x
EF + FG = DG
2x + 13 + 20 = 71
2x = 71 - 20 - 13
x = 38 / 2
x = 19
