X² 10x = 15
x² + 10x + 5² = 15 + 5²
(x + 5)² = 15 + 25
(x + 5)² = 40
x + 5 =
![\pm](https://tex.z-dn.net/?f=%5Cpm)
√40
x = √40 - 5 or x = -√40 - 5
x = (2√10 -5) or (-2√10 - 5)
Answer:
r<-4
Step-by-step explanation:
when inequality is divided by a negative number the sign changes to next direction.
Answer:
$497
Step-by-step explanation:
Added all three purchases (154.18 + 122.79 + 219.54) will give you $496.51. Rounded to the nearest dollar, you get $497.
Answer: No. Choosing two dimes are dependent events. The probability of choosing the first dime is 1/4 and the probability of choosing the second dime is 1/7. The probability that both coins are dimes is (1/4)(1/7) = 1/28.
Answer: 2222
Step-by-step explanation: 2000+200+20+2 = 2222