Answer:
There isn’t a property for subtraction or division but there is for multiplication and addition. It’s called the commutative property.
Step-by-step explanation:
Answer:
HMO
Step-by-step explanation:
I've taken the same test
Answer: X1 = -1 X2 = 7/5
Step-by-step explanation:
move the constant to the left-handed side, write -2x as a difference, factor out 5x from the expression, then factor out x + 1 from the expression. when the product of factors equals 0, at least one factor is 0. lastly, solve for x.
We are given the formula that calculates the sum of consecutive numbers as follows:
[ n(n+1)] / 2
where n is the last number
Now, we want to calculate the sum from 1 to 100. The last number is 100, this means that n=100
Substitute with n=100 in the given equation to get the sum as follows:
sum = [100(100+1)] / 2
sum = [100*101] / 2
sum = 10100 / 2
sum = 5050
Therefore, the correct choice is:
D. 5,050
Answer:
21 + 12i
Step-by-step explanation:
Given
(3 - 4i)(1 + 5i) - (2 - i) ← expand the product of factors using FOIL
= 3 + 11i - 20i² - 2 + i ( note i² = - 1 )
= 3 + 11i + 20 - 2 + i ← collect like terms
= 21 + 12i