Answer:
A. 8
Step-by-step explanation:
Use PEMDAS
E for exponents (4^2)/(2^1)
4^2 = 4 * 4 = 16
2^1 = 2
D for division
16/2 = 8
So the answer is A
74A52B1 and 326AB4C are multiples of 3.....That means if we divide them by 3, we should get a whole number.
Lets assume A=1 and B=1,
So,
74A52B1 becomes 7415211
Now, lets divide it by 3.
7415211 / 3 = 2471737
Since we got a whole number as a quotient, we can safely say that A=1 and B=1.
∴ The second number 326AB4C becomes 326114C.
Now, lets assume C = 1.
So,
326114C becomes 3261141.
Now,
lets divide it by 3.
3261141 / 3 = 1087047
Since we got a whole number as a quotient, C = 1
∴The value of C is 1. So, answer <u>choice A</u> is correct.
Answer:4.55,0.47
Step-by-step explanation:
Given height varies from 3.6 feet to 5.5 feet for 95% student
i.e.
95% data falls in the interval of (\mu -2\sigma ,\mu +2\sigma )
So
-----------(1)
-----------(2)
Solving (1)&(2) we get
Thus mean=4.55
And standard deviation=0.47
X-y=50 and 2x=3y
x=y+50 so 2(y+50) = 3y
2y+100=3y
y=100
x-100=50
x=150
so our numbers are 150 and 100
150-100=50 and 150 is 3*50 and 100 is 2*50 so fits all requirements!
hope this helps you! thank you!
