Answer:
15 & 7
Step-by-step explanation:
f - s = 8
f = 8 + s
Twice the first number plus three times the second number is 51:
2f + 3s = 51
Substitute:
2(8 + s) + 3s = 51
16 + 2s + 3s = 51
16 + 5s = 51
5s = 51 - 16
5s = 35
s = 7, the second number
Find f:
f = 8 + 7 = 15, the first number
f - s = 8
15 - 7 = 8
8 = 8
The equation that modelled the situation is t=12+0.75m
The total cost of 15-mile trip is $23.25
What are the components of total cost of trip?
The total cost of the trip is made of fixed charge for pickup and the total cost of miles covered on the trip
The total cost of the miles is determined as the cost per mile multiplied by the miles covered
Total cost of miles=0.75*m
The total cost trip=t
t=fixed charged +total cost of miles covered
t=12+0.75m.......(the required equation for total cost)
when m=15, t, total cost is computed as shown below:
t=12+0.75(15)
t=12+11.25
t=$23.35
Find out more about total cost of trip on:brainly.com/question/28372981
#SPJ1
Answer:
let that man's age be x :
subtract 300 from both sides:
apply the division rule of equality:
<u>The</u><u> </u><u>man</u><u> </u><u>is</u><u> </u><u>9</u><u>8</u><u> </u><u>years</u><u> </u>
