Answer:
The three expressions are the first option, the third option, and the forth option
Step-by-step explanation:
I don't really know how to explain my math lol but I solved 5(1/3x+7)-3(1/2x-), and got x, and plugged in x to the equation. I got my answer, and plugged in x to the rest of the equations and the first one, third one, and fourth ones were the ones that had equal answers. You may want to check my math though because i am not the best but that is what I got.
To solve this, we simply add up the total amount of money she spent that day:
21.50 + 10.58 + 5.88 + 7.51 + 2.95 = 48.42
50 - 48.42 = 1.58
She was $1.58 under the average.
-2x - 147 = 123 + 7x
Add 147 on both sides
-2x = 270 + 7x
Subtract 7x on both sides
-9x = 270
Divide -9x on both sides
X = -30
Answer:
The area of the trapezoid is 56.25² feet.
Step-by-step explanation:
The formula for the area of a trapezoid is 
- A = area (of the trapezoid)
- b = base of the trapezoid
- B = (other) base of the trapezoid
- h = height of the trapezoid
*Note: Trapezoids have 2 bases that are parallel to one another, but are not always the same length.
Using the information given to us, we can simply plug in numbers into the equation. By doing so, we'd get 
. By plugging this into a calculator, you'd get 
.
