I haven't seen this video but the way I think of it is to compare the equation with a chemical balance. Both sides have equal weights and the pointer is at zero. To maintain the pointer at zero if we add/take away a weight from one side we have to do the same thing on the other side.
Answer:
A = 1/2(b1 + b2) x h
Step-by-step explanation:
That's the formula for a trapezoid. When your ready to post your question I'll use this formula to help you out! Hope this helps! :)
Surface area is the area that is on the outside of a figure and will be used when you have to cover something, but a volume is an area inside an object and is used in finding the amount someone can hold within something else.
❄ Hi there,
let us revise the rounding rules and then, get down to rounding the number.

- If the number you need to round is followed by a number from 0 to 4, you round down.
- If the number you need to round is followed by a number that's 5 or more, you round up.
Now we can start the rounding process.
Reading the problem & the directions, we notice that we need to round to 3 decimal places (3 numbers after the decimal point).
Looking at the fourth number, we notice that it's less than 5.
∴ we need to round down ↡
↬
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
❄
Answer:
C 16
Step-by-step explanation:
Using ratios
3:12
12/3=4
4:x
4*4=16
x=16
4:16
hope this helps:)