All categories

3 years ago

The height of a trapezoid is 9 centimeters. The bases are 8 centimeters and 12 centimeters long. Find the area?

Mathematics

1 answer:

Georgia [21]3 years ago

5 0

To fond the area of a trapezoid, add the top and bottom together, divide that by 2, than multiply by the height.

Area = (8+12)/2 = 20/2 = 10

10 x 9 = 90 square centimeters.

You might be interested in

Solve the equation 3x-2 4 - 2x - 5- 1 + x 3 6

Nataly_w [17]

Answer:

$\boxed{\sf x=12}$

Step-by-step explanation:

$\sf \cfrac{3x-2}{4}-\cfrac{2x-5}{3}=\cfrac{1+x}{6}$

First, let's find the LCM of 4, 3, and 6.

How to find the LCM:

→ List multiples of each number.

→ Find the smallest number on each list.

4: 4, 8, 12, 16, 20, 24..

3: 3, 6, 9, 12, 15, 18, 21, 24, 27....

6: 6, 12, 18, 24, 30, 36, 42...

LCM: 12

_________

Now, we'll Multiply by LCM:

$\sf \cfrac{3x-2}{4}\times \:12-\cfrac{2x-5}{3}\times \:12=\cfrac{1+x}{6}\times \:12$

Simplify:

$\sf 3\left(3x-2\right)-4\left(2x-5\right)=2\left(x+1\right)$

Now, expand, Apply the Distributive property:

$\bold{ 3\left(3x-2\right)-4\left(2x-5\right)}$

$\sf 9x-6-8x+20$

Combine like terms:

$\sf x+14$

________

$\bold{ 2\left(x+1\right)}$

$\sf 2x+2$

$\sf x+14=2x+2$

Subtract 14 from both sides:

$\sf x+14-14=2x+2-14$

Simplify:

$\sf x=2x-12$

Subtract 2x from both sides:

$\sf x-2x=2x-12-2x$

Simplify:

$\sf -x=-12$

Divide both sides by -1:

$\sf \cfrac{-x}{-1}=\cfrac{-12}{-1}$

$\sf x=12$

7 0

2 years ago

What is 4(b + 2), if b = 7?

AlladinOne [14]

Answer:

the answer would be 36

Step-by-step explanation:

hoped I helped:)

8 0

3 years ago

Read 2 more answers

14x+5y+3x-2y+5 simplified

mr_godi [17]

17x+3y+5 if you just want to add common factors

5 0

3 years ago

Read 2 more answers

Given g(x) = x2-8x-20, which statement is true?

sveticcg [70]

Answer:C

Step-by-step explanation:

3 0

2 years ago

PLS HELP ASAP, WILL MARK YOU BRAINLIEST!!!!

GuDViN [60]

Answer:

Try looking at each angle and add the sides

Step-by-step explanation:

4 0

2 years ago