Answer:
Step-by-step explanation:
1st you want to find a common denominator. which is 8.
2nd change 
to 
3rd you add and 
together an you get
For this question, let's use algebra!
<u>2.5 miles</u> = <u>50 minutes</u>
1 mile x minutes
x minutes = 50 x 1 ÷ 2.5
x minutes = 20
Hope this helps!
Answer:
Step-by-step explanation:
Check attachment for solution
Answer:
I would change 2x+4y=24 into x=12–2y
To do that, divide both sides by 2 and then subtract 2y on each side.
After that, substitute for x. 3x+2y=19 would become 3(12–2y)+2y=19.
Then solve.
3(12–2y)+2y=19
36–6y+2y=19
-4y+36=19
-4y=-17
y=4.25
Then, substitute y in either equation.
Either this:
3x+2y=19
3x+2(4.25)=19
3x+8.5=19
3x=10.5
x=3.5
Or:
2x+4y=24
2x+4(4.25)=24
2x+17=24
2x=7
x=3.5
Or you could solve it in the equation you created in the beginning:
x=12–2y
x=12–2(4.25)
x=12–8.5
x=3.5
The coordinates where the lines intercept are (3.5, 4.25).
Sorry for the long answer!
