Answer: 84
Step-by-step explanation: 48÷4= 12 so 12 times 7 is 84
Answer:
-9x-14
Step-by-step explanation:
Using distributive property, we can simplify the expression to x - 2 - 10x - 12
Then we can combine like terms and get -9x - 14
Answer:
Area is (x² - 9) units squared.
Step-by-step explanation:
• from difference of squares quadratic property:
→ a is x
→ b is 3
• Therefore:
Answer:
x = -2bm/(m²+1)
Step-by-step explanation:
One line has equation
... y = mx + b
The slope of the perpendicular line is the negative reciprocal of the slope of the original line. The perpendicular line with the opposite y-intercept has equation
... y = (-1/m)x - b
The point of intersection is where the x- and y-values are equal, so ...
... mx + b = (-1/m)x - b
... (m +1/m)x = -2b . . . . . . . add 1/m - b to both sides
... (m²+1)x = -2bm . . . . . . . multiply by m
... x = -2bm/(m²+1) . . . . . . divide by the coefficient of x
Answer:
<u>C and D</u>
Step-by-step explanation:
<u>D.</u> A negative times a positive gives you a negative, so the first 2 fractions will still be negatives after they get out of the parenthesis
<u>C.</u> The 4/7 and -4/7 cancel out
