Answer:
a = 16
Step-by-step explanation:
inversely proportional
y = k/x
a = k/b
5 = k/4
solve for k
multiply by 4 on each side
20 =k
a = 20b
if b = 4/5
a = 20 * 4/5
a = 16
Answer:
Eric,Tony,Jeff,Gary
Step-by-step explanation:
Given the payments made by each individual below:
- Tony paid 35% of the bill.
- Eric paid 3/8 of the bill.
- Jeff paid 0.175 of the bill
- Gary paid 1/10 of the bill.
The most convenient way to order their payments is to convert each to percentage.
Eric paid 3/8 of the bill.
- In Percentage:

Jeff paid 0.175 of the bill
- In percentage, 0.175 X100 =17.5%
Gary paid 1/10 of the bill.
In Percentage: 
Therefore, the order from most to least is:
Eric(37.5%), Tony(35%),Jeff(17.5%),Gary(10%)
Answer:
if the x after the 20 means multiply then the answer is -34/7 or -4 6/7 if the x is a letter then it's 2/11
Step-by-step explanation:
20x2-7x=6
20x2=40
40-7x=6
subtract 40 from 6= 34
-7x=34
34÷-7= -34/7 if needed in a mixed fraction -4 6/7
Answer:
x + 2y = -8
y = 12x - 2
x + 2(12x - 2) = -8
x + 24x -4 = -8
25x - 4 = -8
25x = -4
x = -4/25
y = 12(-4/25) - 50/25
y = -48/25 - 50/25
y = -98/25
Step-by-step explanation:
Answer:
a) b
b) d
Step-by-step explanation: