19. 19.31 times 40=$772.4
20. 52 times 772.4=$40,164.8
weekly = 40 times 19.31
yearly =weekly times 52 or 19.31 times 40 times 52
21. 15.07 times 40=$602.8
22. 52 times 602.8=$31,345.6
weekly = 40 times 19.31
yearly =weekly times 52 or 15.07 times 40 times 52
23. Monica yearly-Chris yearly=40,164.8-31,345.6=$8816.2
So lets write this equation out. Let x be that number we are trying to find.
So five-sevenths is a fraction that is written like this
5/7
when you see the word "of" that means multiplication
so we can write the full equation.
(5/7)x = -35
now we can solve
Multiply both sides by 7
5x = -245
now divide by 5
and we get
x = -49
Answer:
1 hotdog cost $2.25
1 popcorn cost $3.5
Step-by-step explanation:
Let the price of hotdog be and that of popcorn be p
For the first hour;
15p + 14h = 84 •••• (i)
for the second hour;
18p + 16h = 99 •••••(ii)
so we want to solve these two equations simultaneously
In equation 1,
14h = 84-15p
h = (84-15p)/14
Simply insert this into equation ii
18p + 16(84-15p)/14 = 99
Multiply through by 14
252p + 1344 - 240p = 1386
1386-1344 = 252p-240p
12p = 42
p = 42/12
p = $3.5
to get cost of hotdogs;
h = (84-15p)/14
Substitute p = 3.5
h = (84-52.5)/14
h = 31.5/14
h = 2.25
Answer: D - 15/17
Explanation: it is the only answer that keeps continuing on forever when divided
