Answer:
Step-by-step explanation:
GIVEN: In a 
mile race, Janet covered the first 
miles at a constant rate. She then speed up and rode her bike the last 
miles at a rate that was 
miles per minute faster. Janet's overall time would have been minutes faster had she ridden her bike the whole race at the faster pace.
TO FIND: What was Janet's average speed (in miles per minute) for the whole race?
SOLUTION:
let the speed of Janet in first 
speed of Janet's bike in last 
total time taken by Janet,
Time taken if Janet rides whole race at faster pace 
As, Janet's overall time would have been 
faster had she ridden her bike the whole race at the faster pace.
on solving we get
Average speed 
Average speed 
Therefore average speed of Janet was
A square root of a number a is a number y such that y2 = a; in other words, a number y whose square (the result of multiplying the number by itself, or y⋅y) is a.[1] For example, 4 and −4 are square roots of 16 because 42 = (−4)2 = 16. Every nonnegative real number a has a unique nonnegative square root, called the principal square root, which is denoted by √a, where √ is called the radical sign or radix. For example, the principal square root of 9 is 3, denoted √9 = 3, because 32 = 3 • 3 = 9 and 3 is nonnegative. The term whose root is being considered is known as the radicand. The radicand is the number or expression underneath the radical sign, in this example 9.
Answer:
3x^2+x-9
Step-by-step explanation:
f+g
means you are going to add whatever f equals to what g equals
so you have
(-3)+(3x^2+x-6)
Combine like terms
3x^2+x+(-3+-6)
3x^2+x+-9
or
3x^2+x-9
Answer: x^5/x^1 = x^4
y^2/y^2 = 1
so
x^4
here is were I got it : https://www.jiskha.com/questions/1673336/1-which-of-the-following-is-equivalent-to-x-5y-2-xy-2-when-x-not-0-and-y-not-0-a
