<span>Given data show that 129 college students out of 192 have part time jobs.
proportion p = 129/192 = 0.672
The estimated population proportion is p* = 0.672
Standard error = squareroot of [p*(1 - p*)/n] = 0.034
Value for 95% confidence interval = 1.96
margin of error = 1.96 x 0.034 = 0.067</span>
Answer:
Radius is half of diameter; the distance around a circle.
Step-by-step explanation:
Answer:
1260
Step-by-step explanation:
S=180(9-2)
S=180(7)
S=1260
Answer:
Marc's age is 12
Step-by-step explanation:
Let
x ----> Marc's age
y ---> Tony's age
z ---> Ben's age
we know that
the sum of their ages is 40
so
-----> equation A
Marc is half as old as Tony
so
----> equation B
Marc is three times as old as Ben
so
----> equation C
substitute equation B and equation C in equation A
solve for x
therefore
Marc's age is 12
To determine the value of the given algebraic expression above, we simply substitute the values of each variable to the variables in the expression and evaluate the expression. We do as follows:
6x(y^2)(z)
when x = 0.5
y = -1
z = 2
6(0.5)((-1)^2)(2)
3(1)(2)
6
The value of the algebraic expression would be 6. An algebraic expression consists of variables which are represented with letters like for this case x, y and z, a coefficient which is indicated by numbers (e.g. 6 ) and exponents like 2 for the expression above. Often times expressions contains a number of terms which consists of those elements.
