A challenge to all math experts... Follow me if you love such challenging questions as I keep on asking such questions to check the mindsets of the mathematicians roaming in
Please don't answer unnecessarily as your bad effort to gain points will be reported by me, first of all try in paper then only answer as your wrong answer reduces the chance for other mathematicians

20

Step-by-step explanation:

Refer to attached

Imagine the rod cut and opened to make a rectangle with sides of 4 and 12

As the string goes 4 times, the length of the rod is divided by 4 parts of

We have triangle of sides 3 and 4, therefore the long side is 5

The length of the string is:

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.

answer: it's upside down and i can't read it

step-by-step explanation: