Question

Charles has been asked to insert a trapezoid in the floor tiling of the rotunda of the courthouse. One base must be 8 feet and the height must be 10 feet. Write an equation for the area.

Answer 1

help?

Answer 2

algebra 1 equations

Answer 3

http://www.mathopenref.com/trapezoidarea.html

Answer 4

so, area = (8 feet + x feet / 2) * 10

Answer 5

\[a=(\frac{ 8+x }{ 2 }) * 10\]

Answer 6

If Charles wants the area of the trapezoid to be 65 square feet, what should be the measure of the second base?

Answer 7

u there?

Answer 8

just plug 65 into a, sorry I was AFK

Answer 9

65=

Answer 10

\[65 = ((8+x)/2)∗10\]

Answer 11

x will be the second side

Answer 12

so
idk what to do first

Answer 13

so whats the first step

Answer 14

Solve for x:
65 = 5 (8+x)
Divide both sides by a constant to simplify the equation.
Divide both sides of 65 = 5 (8+x) by 5:
8+x = 65/5
Use long division to simplify 65/5.

5 | 1 | 3
| 6 | 5
- | 5 |
| 1 | 5
- | 1 | 5
| | 0:
8+x = 13
Isolate terms with x to the left hand side.
Subtract 8 from both sides:
x+(8-8) = 13-8
Look for two terms that sum to zero.
8-8 = 0:
x = 13-8
Evaluate 13-8.
13-8 = 5:
Answer:
x = 5