Answer:
Step-by-step explanation:
1) P(Z<2.87) = 0.5+P(0<z<2.87)
= 0.9979
Option a
2) P(Z>-0.87) = 0.5+P(-0.87<z<0)
= 0.8078
3) X - scores on a law school ent exam
x bar = 250 and sigma = 50
P(X>284) = P(
=0.5-02517=0.2483
No of students = 320(0.2483) = 79.456
=79
4) X - length of new born N(49.2, 1.8)
N =2000
P(X>51) = P(Z>0.44)
=0.33
No of girls = 2000(0.33) = 660
Answer:
Step-by-step explanation:
Set up an equation to model the situation,
Distribute, multiply each term in the parenthesis with the term outside of the parenthesis. Don't forget the laws of exponents, when one multiplies two exponents, with the same base, then one adds the two exponents. A number with no exponential term is two the first degree meaning that it is to the power of one.
Answer:
see attached
Step-by-step explanation:
Each digit of the quotient is aligned with the least significant digit of the current dividend. The "current dividend" is that portion of the remaining dividend that is at least 1 and less than 10 times the divisor. The product of the quotient digit and the divisor is subtracted from the "current dividend" to get the remaining dividend.
__
For many folks, the hardest part of this algorithm is determining the appropriate quotient digit, and multiplying that by the divisor. Some teachers teach that you start this process by making a list of the multiples of the divisor:
N . . . 28N
1 28
2 56
3 84
4 112
...
This process can be aided by your number sense.
2N is simply N added to itself.
3N is N+2N.
4N is double 2N
5N is half of 10N.
You can proceed to build the table by adding 28 to each previous value, or by recognizing doubles and halves and other sums.
