Answer: 1/2
<u>Multiply</u>
2×5=10
10/4-2 is your new problem
<u>Simplify</u>
10/4 = 5/2
5/2-2 is your new problem
<u>Subtract</u>
5/2-2=1/2
Answer:
Profit = 935
Step-by-step explanation:
Purchase price: 500×1.28=640
Selling price: 500×3.15=1575
Profit: selling price - purchase price = profit
1575 - 640 = 935
Profit = 935
Answer:
2) (3,-2)
Step-by-step explanation:
the solution is where the lines intersect. they intersect at one point because this function is linear. they intersect at the point (3,-2)
Answer:
xy(y - x)(y + x)
Step-by-step explanation:
take out a common factor xy from both terms
= xy(y² - x²)
y² - x² is a difference of squares and factors in general as (y - x)(y + x)
Hence
xy³ - x³y = xy(x - y)(x + y)
The variance is the total of the squared distances of the given data from the mean.
This can be calculated through the equation,
σ² = summation of X² / N - μ²
where σ² is the variance X's are the data, N is the number of terms, and μ is the mean.
summation of X² = 100² + 100² + 120² + 120² + 180² = 81200
N = 5
μ = (100 + 100 + 120 + 120 + 180) / 5
μ = 124
Substituting these values to the equation for variance,
σ² = (81200/5) - 124² = 864
Thus, the variance is equal to 864.
