lefa40 aman20
Chiasốxoàiira10p ha ần xài
Answer:25%
Step-by-step explanation:
1. increase=new number-original number
increase=2.25-1.80
increase=0.45
2. increase %= increase÷ original number × 100
%= 0.25× 100
%=25
30+x=42 I think because it's has to equal 42 and he already has 30
Answer:
D. 7.29.
Step-by-step explanation:
For a Normal Distribution:
Q1 = mean - (0.675) * standard deviation
= 8.5 - 0.675*1.8
= 7.285.
To find the mean, you add all the elements together, then divide by the number of elements.
Like this:
(45+48+49+40+53)/5=47
in other words the correct answer is 47 inches.
EDIT: Did the foolish mistake, of using the wrong numbers the first time. Fixed now and the answer is correct.
