Answer:
Car 1 : 40 miles per gallon
Car 2: 25 miles per gallon
Step-by-step explanation:
family has two cars. During one particular week, the first car consumed 15 gallons of gas. The second car consumed 25 gallons of gas. The two cars Drove a combined total of 1475 miles and the sum of their fuel efficiency was 65 miles per gallon. What were the fuel efficiency of each of the cars that week
Given that :
Fuel efficiency , car 1 = x
Fuel efficiency , car 2 = y
x + y = 65 - - (1)
15x + 35y = 1475 - - - (2)
x = 65 - y
15(65-y) + 35y
975 - 15y + 35y = 1475
20y = 14875 - 975
20y = 500
y = 25
Put y = 25 in (1)
x + y = 65
x + 25 = 65
x = 65 - 25
x = 40
A. So we know that a 6 foot figure casts a shadow 4 feet long. 4 foot shadow x 5 = a 20 foot shadow. So this means we take 6 x 5 = 30, and the tree is 30 feet tall.
B. 30 - 6 = 24 feet taller than Frank
Yo sup??
We can solve this questions by trying option verification.
We observe that 0 is common among all the options so 0 has to be a zero of the function.
when x=1
g(1)=1-1+4-4=0
Therefore 1 is also a zero of the function.
Since 1 is not there is option 2 and 3, hence our answer is either option 1 or 4
when x=2
g(2)=16-8+16-8=0
Therefore 2 is also a zero of the function.
Hence the correct answer is option D ie 0,1,2
Hope this helps.
