Answer:
c. 56.2 mph
Step-by-step explanation:
In most cars, the speedometer reading is proportional to tire rotation speed, so a larger diameter tire will go farther for the same number of rotations. That is, the distance traveled in a certain length of time is proportional to the tire circumference, which is proportional to the tire diameter.
The car with new tires will actually be going at the speed of ...
(26 in)/(24.5 in) × (53 mi/h) ≈ 56.245 mi/h ≈ 56.2 mph
You will only need 2.83% of the 34 cm cube
Given from the question
Vertex
(h,k) = <span>(500, 15900)
One of the points on the graph
(x,y) = (0,8400)
FIRST PART: Find the quadratic function
We can find the quadratic function by this formula
y = a (x - h)</span>² + k
Input the numbers to the formula, to find the value of a
y = a (x - h)² + k
8400 = a(0 - 500)² + 15900
8400 = a (500)² + 15900
8400 = 250000a + 15900
-250000a = 15900 - 8400
-250000a = 7500
a = 7500/-250000
a = 0.03
Submit a to the formula
y = a (x - h)² + k
y = 0.03 (x - 500)² + 15900
<em>(This is the quadratic function)
</em>SECOND PART: Find the linear function
<em />the total cost = cost each helmet × the number of helmet
y = 26x
SO, THE ANSWER IS OPTION B
Answer:30
Step-by-step explanation:because it is very diffeculy sorry
Answer:
c. 2
Step-by-step explanation:
As y increases 2 units as x increases 1 unit from (0, 3) to (1, 5)
the slope of the line is 2/1 = 2