Answer:
-10x^2 +9+8x^2-5x+7=-2x^2-5x+16
Answer:
x = 9
Step-by-step explanation:
x² = 81
9×9 = 81
x = 9
Answer:
15
Step-by-step explanation:
Can't really see the graph clearly but the range looks like its from 40-70 so 30 and the amplitude is half of that so 15.
Answer:
1,440
Step-by-step explanation:
if first two digits must be odd, then there are 4x3 or 12 combinations for that
if the next three digits can be even or odd but not repeats then there can be 6 (two odds remaining plus four evens) x 5 x 4 = 120
120 x 12 = 1,440
