Answer:

Step-by-step explanation:
From the question we are told that
Mean
Standard deviation 
Percentage for men =99.75%
Generally the empirical rule 68%,95% and 99.7% of data value lay b/w 1,2,3 standard deviation of mean
Standard deviation n= 9
Mean x= 120
Generally the interval of systolic blood pressure for middle 99.7 of male G is mathematically given as



Answer:
X+Y=26
X-Y=12
Step-by-step explanation:
fiction books= X
non fiction books= Y
then,
fiction books= X
non fiction books = X-12
but Y= X - 12
from. the statement,
X+Y = 26
X-Y=12
Answer:
DONT TRUST THE LINK OF OTHER USER AND REPORT
Answer:
2x²+ 7x + 12
Step-by-step explanation:
2x(x+5)-3(x-4)
2x²+ 10x - 3x +12
2x²+ 7x + 12
Answer:
3
Step-by-step explanation:
so you set up an equation because the sides are equal
10+x=4x+1
then you solve
10=3x+1
9=3x
x=3