I don't think i am doing that.
Answer: First option
Step-by-step explanation:
By definition:
Then, you can simplify the numerator as following:
Factor the numerator. Find two number whose sum is 2 and whose product is -8. THese would be 4 and -2. Then:
Simplify. Then you obtain:
There are 63 students in the room because 21 x 3 = 63
Answer:
680
Step-by-step explanation:
the formula to make a triangle is b×h ÷ 1/2.
after using the formula I got 68.
then, I multiplied 68×10.
300 - 260 = 40
40 day left to live... :(