First, you would need to solve for t using the equation: 3t - 7 = 5t
Move all the numbers with variable on ones side
-7 = 5t - 3t
Combine like factors
-7 = 2t
Solve for t
-7/2 = t
After solving for t, you plug the answer into the equation you want to solve.
6 (-7/2) = -21
6*-7 <u></u>= -42
-42/2 = -21
The answer is -21
Answer:
Therefore, 448 inches² Wrapping paper is needed to wrap a present.
Step-by-step explanation:
The Present Shape as per dimensions it is CUBOID
Given:
Length = 8 inches
Width = 8 inches
Height = 10 inches
To Find:
Surface Area of Cuboid = ?
( Wrapping paper is needed to wrap a present )
Solution:
By Formula we have

Substituting the given value in above formula we will get

Therefore, 448 inches² Wrapping paper is needed to wrap a present .
Ok, l = lewa's backpack and a= alai's. :)
1/2a -5 = l.
so to solve,
1/2 (36) - 5 = l.
18 - 5 = l.
13 = l.
so Lewa's backpack weighs 13 pounds. Hope it helps!