If the diameter of a circle changes from 5 cm to 15 cm, how will the circumference change? a) multiplies by 1 3 b) multiplies by 3 c) increases by 10 d) decreases by 10

Given that diameter of the old circle = 5 cm

Given that diameter of the new circle = 15 cm

Now we have to find the change in circumference from old to new circle.

To find that we need formula of circumference of the circle which is

circumference = D \pi

where D represents diameter of the circle.

Then ratio of the circumference of the both circle is given by

That means circumference of the new circle is 3 times more than old circle.

Hence choice "B) multiplies by 3" is correct.

1760 kilometers

step-by-step explanation:

multiply the amount of time the plane took to travel by it's speed

d

step-by-step explanation:

by observation, we can see that the the graph is simply the graph of y = |x| that has been shifted 4 units downwards and 3 units to the left.

we can recognize in choice d :

y = | x + 3 |   - 4 (rewriting in general form)

y = | x - (- 3) |   - 4

the "-4 " term means   that the graph has been shifted by 4 units in the negative y direction

the "-3 " term means   that the graph has been shifted by 3 units in the negative x direction

this matches our observation of the graph described above.