Answer:
840cm^2
Step-by-step explanation:
Volume: Area of cross section x length
Area of cross section:(15 x 8 + 4x 5 )
length: 6
So volume:
(15 x 8 + 4x 5 ) x 6 = 120 + 20 X 6 = 140x6 = 840cm^2.
Hope this helps.
Good Luck
1:Correct
2: 8 / 2 = 4
3: 6 / 2 = 3
4: 6*1*6 = 36
5: 0/6 + 6 = 6
6: 5+3+1+9 = 18
You have not provided a diagram, therefore, I cannot provide you with the exact solution.
However, I will try to help you with the procedures on how to get the area of trapezoid and you can apply on the diagram you have.
Now, area of trapezoid can be calculated using the following rule:
area of trapezoid =
![\frac{b1 + b2}{2} * h](https://tex.z-dn.net/?f=%20%5Cfrac%7Bb1%20%2B%20b2%7D%7B2%7D%20%2A%20h)
where:
b1 is the length of the first base
b2 is the length of the second base
h is the height of the trapezoid
The bases are the two parallel sides in the trapezoid
To better illustrate this, consider the attached diagram.
We have:
b1 = 5 m
b2 = 8 m
h is the perpendicular height = 4 m
Area =
![\frac{5+8}{2} *4](https://tex.z-dn.net/?f=%20%5Cfrac%7B5%2B8%7D%7B2%7D%20%2A4)
= 26 m²
Hope this helps :)
Answer:
Hey 2923928 !
<u>Answer</u><u>:</u><u> </u><u>The</u><u> </u><u>second</u><u> </u><u>choice</u>
![\dashrightarrow \: { \tt{(x + 3)( - {x}^{2} + 4x - 2)}}](https://tex.z-dn.net/?f=%20%5Cdashrightarrow%20%5C%3A%20%7B%20%5Ctt%7B%28x%20%2B%203%29%28%20-%20%20%7Bx%7D%5E%7B2%7D%20%20%2B%204x%20-%202%29%7D%7D)
• from distributive property;
![\dashrightarrow \: { \tt{( - {x}^{3} + 4 {x}^{2} - 2x - 3 {x}^{2} + 12x - 6) }}](https://tex.z-dn.net/?f=%5Cdashrightarrow%20%5C%3A%20%7B%20%5Ctt%7B%28%20-%20%20%7Bx%7D%5E%7B3%7D%20%20%2B%204%20%7Bx%7D%5E%7B2%7D%20-%202x%20-%203%20%7Bx%7D%5E%7B2%7D%20%20%2B%2012x%20-%206%29%20%7D%7D)
• simplify:
![\dashrightarrow \: { \tt{ - {x}^{3} + {x}^{2} + 10x - 6}}](https://tex.z-dn.net/?f=%5Cdashrightarrow%20%5C%3A%20%7B%20%5Ctt%7B%20-%20%20%7Bx%7D%5E%7B3%7D%20%20%2B%20%20%7Bx%7D%5E%7B2%7D%20%20%2B%2010x%20-%206%7D%7D)
First, we need to isolate the x by removing the 3 from the x.
8=3+x/-6
8-3 = 3-3+x/-6
5 = x/-6.
Then you remove the -6 from the x and since it is being divided by x we multiply it
5 x -6 = x/-6x-6
-30 = x
So x = -30