Answer: b) -0.625
<u>Step-by-step explanation:</u>
The formula for the z-score is:
95/100 = 0.95 <== if she missed 5 out of 95, then she got 95 out of 100
Answer:
9 years
the tree doubles in height
we can make a model
1 x 2 = 2
2 x 2 = 4
4 x 2 = 8
8 x 2 = 16
16 x 2 = 32
32 x 2 = 64
64 x 2 = 128
128 x 2 = 256
256 x 2 = 512
512 x 2 = 1024
Let's say 1024 is the maximum height
half the maximum height is 1024 x 0.5 = 512 so it will take 9 years because it reached 512 on the 9th year
Step-by-step explanation:
Answer:
c
Step-by-step explanation:
21×43
=(20+1)×(40+3)
=800+40+60+3
