Answer: 9 inches.

Do the pythagorean theorem to find your answer.

Formula: a^2 + b^2 = c2

12 = b

15 = c

a^2 + 12^2 = 15^2

Simplify the equation

a^2 + 144 = 225

Subtract 144 on both sides.

a^2 = 81

Square root of 81 is 9.

**Answer: There is none.**

**Step-by-step explanation:**

There is no proportional relationship between Celsius and Fahrenheit because for a proportional relationship to exist, the two variables need to have an equivalent ratio between them which would ensure that their values vary constantly when they are either divided or multiplied.

In other words, only the arithmetic operations of multiplication and division should be present. In the above there is an additive operation which renders the two variables being Fahrenheit and Celsius, non-proportional.

total distance travelled=72+69=141

time taken in hours for journey= (48/60)h + (69/60)= 1.95 h

average speed=141km/1.95h= 72.3km/h (3 sf)

**Answer: D) No. The graph fails the vertical line test.**

Explanation:

We are able to draw a single vertical line that passes through more than one point on the red curve. For example, we could draw a vertical line through x = 5 and have it cross the red curve at (5,4) and (5,-4).

So this is one example where the graph fails the vertical line test. It passes this test when such a thing doesn't happen. In other words, a function is only possible if any x input leads to exactly one and only one y output.

In this case, x = 5 leads to multiple outputs y = 4 and y = -4 at the same time. There are other x values which this occurs as well (any x values such that x > 1). So this is why we don't have a function.

Take the decimal and multiply it by 100.