Answer:
x=9
Step-by-step explanation:
Answer:
u already answered the questions
Step-by-step explanation:
Answer:
Domain is (infinity, infinity) so it would hit every single number of x. The range which is y would be greater than or equal to -3. Range starts at -3 and hits every number above that.
Answer:
D. 40.0km
Step-by-step explanation:
When rounding to 3 significant figures, we will have to look at the 4th significant figure. If that figure is 1-4, you round the 3rd figure down. If that figure is 5-9, you round the 3rd figure up.
In this case, the 3rd figure is the tenth 9 and the 4th figure is the hundredth 7.
Since 7 is from 5-9, you round the tenth 9 up. This adds one whole to 39, which makes it 40. You also need to keep 3 significant figures so the decimal zeros are significant. Thus, the answer is 40.0km
Assume that the spring behaves linearly so that
y = a + bx
where
x = weight of the mass
y = stretch of the spring
a,b are constants
When x = 70 g, y = 22 cm, therefore
a + 70b = 22 (1)
When x = 105g, y = 27 cm, therefore
a + 105b = 27 (2)
Subtract (1) from (2).
a + 105b - (a + 70b) = 27 - 22
35b = 5
b = 0.1429
From (1), obtain
a = 22 - 70*0.1429 = 12
Answer:
The required equation is
y = 12 + 0.1429x
