Answer:
Step-by-step explanation:
Well, they are not the same. For one thing, 48÷x = 6 is an equation.
48-x-x-x-x-x-x is an expression, not an equation.
length = 15
let the width = w then length = 2w - 3
Perimeter = 2(length + width)
= 2(2w - 3 + w) = 2( 3w - 3) = 6w - 6 = 48
hence 6w = 48 + 6 = 54 ⇒ w =
= 9
Thus length = 2w - 3 = (2× 9) - 3 = 18 - 3 = 15
Answer:
u=1/2
Step-by-step explanation:
-3(-6u+6)-3u=5(u-2)-3
18u-18-3u=5u-10-3
15u-18=5u-13
15u-5u-18=-13
10u-18=-13
10u=-13+18
10u=5
u=5/10
simplify
u=1/2
If the waitress works x hours in the evening, according to the problem, she works x-1.75 hours in the afternoon. We have given that she works 5.125 hours in the afternoon, which is x-1.75=5.125. BY solving this equation, we find unknown x, which is equal to 6.87 hours and it is the answer to the problem.
