Answer:
B. 252
Step-by-step explanation:
To find the answer, you have to use the formula to calculate the number of combinations as in this case, the order in which the objects are selected doesn't matter:
nCr=n!/r!(n-r)!
n= number of sample points: 10
r= number of sample points in each combination: 5
10C5= 10!/5!(10-5)!
10C5= 10!/5!*5!
10C5= 252
According to this, the answer is that you have 252 different ways to choose your school lunch.
<span>the main formula is (a - b)² = a² -2ab + b²
</span><span>as for 49x^2 – 56x + 16, it is the same of (7x -4)²
so the </span>the factored form of 49x^2 – 56x + 16 = (7x -4)(7x -4)
Answer:
529.41
Step-by-step explanation:
From the above question, we are to find the Principal
The formula to find the Principal (Initial amount invested) is =
P = A / (1 + rt)
Where
A = Amount paid after t years. = 720
r = rate of interest = 6% = 0.06
t = time in years = 6
First, converting R percent to r a decimal
r = R/100 = 6%/100 = 0.06 per year.
Solving our equation:
P = 720 / ( 1 + (0.06 × 6)) = 529.41176470588
Approximately
P = 529.41
Therefore, Kaitlyn's brother borrowed 529.41 for school
Answer:
Step-by-step explanation:
Given that:
population mean = 10
variance = 25 ; = = 5
sample size n = 28
The standard deviation of the sample mean:
=
= 0.95
To halve the standard deviation of the sample mean, the size of how large the sample will be can be computed as follows:
= 2
n = 4 × 28
n = 112
B 28 feet. When you add all the numbers up you get 28 feet