Answer:
8
Step-by-step explanation:
8 is the digit after 7 and previous to 9
1/10 of 200 is 20
1/4 of 200 is 50
20+50=70
200-70=130 peanuts
Answer:
, or approximately 8.6
Step-by-step explanation:
By creating a right triangle as shown, we see that the given line is the hypotenuse of a right triangle with legs of lengths 5 and 7. By the Pythagorean Theorem, the length of the line is 
.
Answer:
x=1
Step-by-step explanation:
if it is truly 9^(x-1)=27^(x-1), then you dont really need to use the quadratic fromula.
Answer:
4/3
Step-by-step explanation:
Moving from (-4, -9) to (5, 3), x (the 'run') increases by 9 from -4 to 5, and y (the 'rise') increases by 12 from -9 to +3. Thus, the slope of the line connecting the two points is
m = rise / run = 12/9 = 4/3
It may help to think of the change in x (9) as the horizontal leg of a right triangle and the change in y (12) as the vertical leg. Then
m = (vertical leg length) / (horizontal leg length) = 12/9 = 4/3
