Could someone answer and explain these ? you!

Answer 1:

It is given that the positive 2 digit number is 'x' with tens digit 't' and units digit 'u'.

So the two digit number x is expressed as,

The two digit number 'y' is obtained by reversing the digits of x.

So,

Now, the value of x-y is expressed as:

So, is equivalent to (x-y).

Answer 2:

It is given that the sum of infinite geometric series with first term 'a' and common ratio r<1 =

Since, the sum of the given infinite geometric series = 200

Therefore,

Since, r=0.15 (given)

a=170

The nth term of geometric series is given by .

So, second term of the series = = ar

Second term =

= 25.5

So, the second term of the geometric series is 25.5

Step-by-step explanation:

stew reads at the fastest rate of 265 words per minute.

step-by-step explanation:

it's a given that felicia reads at 260 word per minute and on connie's graph we can see that she reads 200 words per minute. since stew's table tells us that he read 795 in 3 minutes, we can divide 795 by 3 to find out how many words he reads per minute.

795/3 = 265

stew reads 265 words per minute - he reads at the fastest rate since felecia reads at 260 words per minute and connie reads at 200 words per minute.

stew (265) > felecia (260) > connie (200)

the answer is c)8

step-by-step explanaction: