Answer:
0
Step-by-step explanation:
6 - 7 - (-4) - 3
6 - 7 first, and the 4 - 3
-1 + 1
-1 + 1 is 0
0
9514 1404 393
Answer:
11
Step-by-step explanation:
X'Y' = 2XY . . . . lengths are related by the dilation factor
22 = 2XY . . . substitute the given value
11 = XY . . . . . divide by 2
The measure of side XY is 11.
Answer:
(3x - 2)*(3x + 2)
Step-by-step explanation:
I don't know how much more i can explain, except that you could use the quadratic formula to get your zeroes and then put it in your answer. But this one is obvious. Whenever there isn't an x term and you're subtracting the constant term, it's usually (ax - b)(ax + b)
the answer would be 553,000
Answer:
k = -7
Step-by-step explanation:
Given
x² - x - 42 = (x + k)(x + 6)
Required
Find k
x² - x - 42 = (x + k)(x + 6)
Expand the left hand side
x²-7x + 6x - 42 = (x + k)(x+ 6)
Factorize
x(x - 7) + 6(x- 7) = (x + k)(x+ 6)
Further factorize
(x - 7)(x + 6) = (x + k)(x + 6)
By comparison
x + k = x - 7
Subtract x from both sides
k = -7