Answer:
You might want to see if I read your ordered pairs right because it was really hard to see for me:
f(2,6)=14
f(-1,3)=5
f(6,4)=14
Step-by-step explanation:
I assume they meant to write f(x,y)=x+2y.
Doing f(2,6) now. This means replace x with 2 and y with 6:
f(2,6)=2+2(6)=2+12=14
f(2,6)=14
Doing f(-1,3) now. This means replace x with -1 and y with 3:
f(-1,3)=-1+2(3)=-1+6=5
f(-1,3)=5
Doing f(6,4) now. This means replace x with 6 and y with 4:
f(6,4)=6+2(4)=6+8=14
f(6,4)=14
Where are the expression.
I would say -3+5
The ratio is 1:2. If "1" is 18, we need to multiply 18 and 2, or 36.
Hope this helps!
Answer:
14 miles.
Step-by-step explanation:
Let the distance traveled from home to destination = x miles.
Speed while going to friend's house = 35 miles per hour.
Speed while coming back = 40 miles per hour.
Total Time taken for the journey = 45 minutes = 0.75 hours.
Let the time taken while going to friend's house = y hours.
Therefore, the time taken while going to friend's house = (0.75 - y) hours.
To find x and y, model the speeds of both the journeys.
Speed while going to friend's house = Distance/Time.
35 = x/y.
x = 35y (Equation 1).
Speed while coming back = Distance/Time.
40 = x/(0.75 - y).
x = 40(0.75 - y) (Equation 2).
Since x = x, therefore:
35y = 30 - 40y.
75y = 30.
y = 30/75.
y = 0.4 hours.
Put y = 0.4 hours in Equation 1:
x = 35y.
x = 35(0.4).
x = 14.
Therefore, the distance between my friend's house and my house is 14 miles!!!
Yes this is equal because 3v+v is 4v and if you divide 12v by 3 you also get 4v
