Answer:
x=5.4
Step-by-step explanation:
-2.3(x - 1.2) = -9.66
Distribute -2.3
-2.3x + 2.76 = -9.66 (2 negatives make positive)
Subtract the constant (2.76)
-2.3x = -12.42
Divide by coefficient on both sides to get:
x=5.4
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(Pretty sure)
Write in 0 and 0 at the top: this indicates that if there are zero pennies, the height of the tower is 0. This is the point (0,0). Another point is (4, 28): a tower of 28 pennies is 4 cm tall.
Find the slope of the line connecting (0,0) and (4,28).
4cm - 0 cm
m = ----------------- = (1/7) (cm/penny)
28 - 0
The equation we need, relating # of pennies to height of tower, is
t = (1/7) (cm/penny)x, where x is the # of pennies.
Thus, if x = 1, then t=1/7 cm
And, if x =15, then t = 15/7 cm
And so on.
Answer: 130
Step-by-step explanation:
Plug in 3 for x
Plug in the x+3 for y.
8x-x+3=12
7x=9
X=1.3
Then, y= -0.25
Step-by-step explanation:
1 mile = 1760 yd
=> 488 miles = 1760 yd × (488 miles)
it could be 858,880 yd