A circular track has a diameter of 127 m. Find the circumference of the track. Use 3.14 for pie​

398.982267

Step-by-step explanation:

C=πd

 C=π×127

C=127π

C=398.982267

398.78 meters

Step-by-step explanation:

Because the formula to find circumference is d*pi, we just plug in our number.

The circumference is 127pi

Then we plug in 3.14 for pi

That's 127 * 3.14

(You can ignore this next part, I just do it out so I can do it in my head) That's 381 + 12.7 + (1.27*4)

381 + 12.7 + (3.81 + 1.27)

381 + 12.7 + 5.08

398.78

d

step-by-step explanation:

hello and welcome!

so, when we see the words "proportional" along with a table, we need to know that we're looking numbers that divide by the same thing.

looking at this table, we simply have to do a trial and error, and divide to see which numbers have the same quotient. if you look at choice a & c, they both have equal quotients for three of the numbers, with one exception, so those can't be the answer. looking at b, there is no similarity, so that can't be it. then, we see d; if you divide all the numbers in the table, you'll see that they all divide by two, which is a proportional relationship, and our answer!

also, always remember that the x will always be the number that goes into y, and somewhere behind this table, is a formula. for this specific table, the formula would be:

since our x-value is being divided by two to get the y-value. and if they were to ask for more numbers in the series, this is the formula you would use to find them.

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