Answer:
$7
Step-by-step explanation:
Your two equations are ...
Double the second equation and subtract the first:
2(2s +4t) -(4s +6t) = 2(42) -(70)
2t = 14 . . . . . simplify
t = 7 . . . . . . . divide by 2
The cost of each tie is $7.
55*10/2=275
The area of his roof is 275
Answer:
The length of the hypotenuse is 26 inches
Step-by-step explanation:
The leg(brace) attached to the wall is 10 inches
Perpendicular = 10 inches
Your surfboard sits on a leg that is 24 inches.
Base = 24 inches
Formula : 


Hypotenuse = 26
Hence the length of the hypotenuse is 26 inches
7 hours is 28 quarter hours. 50 is closer to 45 than 00 so it is. 75 hours. total is 28.75
Answer:
x=50
Step-by-step explanation:
1) Rewrite the problem as an equation: (x will be "a number")
9x+6=456
2) Subtract 6 from both sides:
9x=450
3) Divide both sides by 9:
x=50