Answer:
The answer is -4x^2-7x-5
Step-by-step explanation:
Answer:
y = -(x+4)² +7
Step-by-step explanation:
I find it convenient to factor the leading minus sign from the first two terms, then work with what's left.
... y = -(x² +8x) -9
Now, add the square of half the x-coefficient inside parentheses. Add the opposite of that amount outside parentheses.
... y = -(x² +8x +4²) -9 +4²
... y = -(x +4)² +7 . . . . . . . . . rewrite parentheses as a square; collect terms
Answer:
TRUE
Step-by-step explanation:
2x + 3x NOT EQUAL TO 4x+5x
COMBINE LIKE TERMS
5x NOT EQUAL TO 9x
Answer:
Step-by-step explanation:
25 200 giây
Answer:
4 minutes = mile mark 3
8 minutes = mile mark 6
the constant of proportionality is both 3/4 so the answer is 3/4 miles per minute