Answer:
she can complete 20 math problems in 26 mins and 40 secs . she has 3 mins and 20 secs to talk to her friends
Step-by-step explanation:
She can solve 3 math problems in 4 mins
She can solve 1 math problem in = 4/3 *60 minutes= 80 secs
She has to solve 20 math problems = 20*80= 1600 secs/60= 26 mins and 40 secs.
She has 3 minutes and 20 secs to talk to her friends.
78....................................................
Answer:
<u>[x - (4 + 2√3)] and [x - (4 - 2√3)]</u>
Step-by-step explanation:
Given :
Divide throughout by 3 to simplify :
- 1/3 x (3x² - 24x + 12)
- x² - 8x + 4
Using the Quadratic Formula :
- x = -b ± √b² - 4ac / 2a
- x = -(-8) ± √(-8)² - 4(1)(4) / 2(1)
- x = 8 ± √64 - 16 / 2
- x = 8 ± √48 / 2
- x = 8 ± 4√3 / 2
- x = 4 ± 2√3
Factors are :
- <u>[x - (4 + 2√3)] and [x - (4 - 2√3)]</u>
Answer:
the answer is 0
Step-by-step explanation:
simple addition of fractions
I know that 5 is a function because each x value has one solution