9514 1404 393
Answer:
216.66 yd²
Step-by-step explanation:
One way to find the area of a ring like this is to multiply its centerline length by the width of the ring.
Here, the diameter of the circle that is the centerline of the ring is 23 yd. The circumference of that circle is ...
C = πd = 3.14(23 yd) = 72.22 yd
Then the ring area is ...
(72.22 yd)(3 yd) = 216.66 yd² . . . area of shaded region
If the line is going straight up, then the slope is undefined. If the slope is horizontal then the slope is 0.
9514 1404 393
Answer:
25%
Step-by-step explanation:
The percentage is found by multiplying the fraction by 100%.
(oil changes)/(total cars) = 14/56 × 100% = 25%
25% of the cars received oil changes.
Given the equation:
You know that a lab technician finds that a sample of fluid has this pH:
Then, in order to find the hydrogen ion concentration of the fluid, you need to follow these steps:
1. Substitute the pH given in the exercise into the equation:
Multiply both sides by -1:
2. Solve for:
Remember that, by definition:
In this case, you can identify that:
Hence, substituting values and simplifying, you get:
Therefore, the answer is:
Answer:
It should be "The unit rate is 2/3 every 1 hour" everything else is correct.
Step-by-step explanation:
