Answer:
1+1=2................<em>.</em><em>.</em><em>.</em><em>.</em>
if samantha traveled 120 miles in 2 hours, this means that she traveled 60 miles in an hour.
to find out how long it’ll take her, you would have to divide 210 by 60
210 / 60 = 3.5 hours (3 and a half)
so, it will take 3.5 hours for samantha to make the 210-mile trip
Answer:
x=1, y=3
Step-by-step explanation:
21x + 7y = 42
Divide this by 7
3x +y = 6
-5x +5y = 10
Divide this by 5
-x+y = 2
Subtract the two equations to eliminate y
3x +y = 6
-(-x+y = 2)
------------------------
3x +y = 6
+x-y = -2
------------------------
4x = 4
Divide by 4
x = 1
Now solve for y
-x+y = 2
-1 +y = 2
Add 1 to each side
y = 2+1
y =3
21 nickels and 16 dimes
proof:
37-21=16
21 x 0.5 = 1.05
16 x .10 = 1.6
1.05 + 1.6 = 2.65
Number 3 is y - 9 = 3/7 • (x + 6)