1- The answer is that she wants the new time to be 32 minutes
Solution: The question asks that she wants to DECREASE by 20%
What you will do it convert 20% to a decimal (which is 0.20)
Then, you need to multiply the minutes by the decimal:
40 x 0.20 = 8 minutes
Now you know that 8 minutes will be 20% of 40 minutes, so you just subtract 8 from 40 UwU
Answer: x² - 4
<u>Four less than</u> the <u>square of a number</u>
↓ ↓
(Take away 4) x²
Four less than the square of a number = x² - 4
Answer: D is the correct answer
50:45, simplified it is 10:9
(Divide both sides by 5)
1. Move terms to the left side
2.Subtract the numbers
3.Use the quadratic formula
4.Simplify
5.Separate the equations
6.Solve
Rearrange and isolate the variable to find each solution.
Solution,
Solution
x=5±√39
