Answer:
Dylan
Step-by-step explanation:
Rate of Origami Making
1) June
= 10/30
= 1/3 origami birds per minute
2) Dylan
= 4/10
= 2/5 origami birds per minute
2/5 > 1/3
So Dylan was faster.
Answer:
34
Step-by-step explanation:
First we need to do 2/3*21, which equals 14 as 3 and 21 can be simplified to 1 and 7. 7 * 2/1= 14. Then we add the 20 to 14, 20+14= 34
Answer:
b. {-9, 3}.
Step-by-step explanation:
x^2 + 6x - 27 = 0
We need 2 numbers whose product is -27 and whose sum is + 6.
These are + 9 and - 3. So the factors are:
(x - 3)(x + 9) = 0
(x - 3) = 0 or (x + 9) = 0
x = 3 or -9.
