Hmm
tr some
m=3
n=4
p=5
q=6
A=m/q=3/6=1/2=0.5
B=n/p=4/5=0.8
test
first,
A+B, andB is irrational
hmm, B is not irrational and the result is not irrational
2nd
0.5+0.8=1.3, it is rational
3rd the fraction is wrong
m/q times n/p=(mn)/(qp) so this is wrong
4th, fraction is also wrong (but it is true that produce of 2 rationals makes rational)
pick 2nd from top
5.47 is the square root of 30.
Answer:
a = 15
Step-by-step explanation:
Substitute b = 12 , a = 9 into the equation
12 = 
12 = 
← square both sides
144 = a² - 81 ( add 81 to both sides )
225 = a² ( take square root of both sides )
± 
= a , then
a = ± 15
a > 0 , so a = 15
Answer: 14 turkeys and a cat
Step-by-step explanation: Getting 32 feet from 15 heads shows that an animal has more than 2 feet. If the 15 heads all belonged to turkeys, we'd have 30 feet (which is 2 short of what was observed). Reducing the number of turkey by 1 and adding a cat balances the number of observed feet. That is, 14 turkeys (with a total of 28 feet) and a cat (with 4 feet). Adding, we have 28+4=32
