BAF and FAD I took the test !
Answer:
You can just write Quadrant I: All values are positive, Quadrant II: Sine is positive, Quadrant III: Tangent is positive, and Quadrant IV: Cosine is positive.
Answer:
rise over run (change in y divided by change in x)
so it would go as follows
= 
= 
Answer:
26
Step-by-step explanation:
2. Given two consecutive positive EVEN integers, the square of the largest minus 10 times the smaller is 76. What is the sum of the two integers?
I'll call the two integers a and b. a=b+2
a² - 10b = 76
(b+2)² - 10b =76
(b+2)(b+2) -10b = 76
b² +2b + 2b +4 -10b = 76
b² +4b + 4 -10b = 76
b² -6b + 4 =76 subtract 76 from both sides to get the right side equal to zero
b² -6b +4 -76 = 0
b² -6b - 72 = 0 what factors of -72 add up to -6? The two that work are -12, 6
(b-12)(b+6) = 0 so b-12 = 0 or b+6 = 0
<u>+12 +12</u> -<u>6 -6</u>
b = 12 or b = -6 but b must be positive so b=12, a=14
a+b= 14+12 = 26
the tale-tell fellow is the coefficient of the squared variable, namely -2 of x². Since the coefficient is negative, the parabola opens downwards, like the one in the picture below, so it goes up up up, reaches a maximum, then goes back down down down.
