. Solve: 5x < 9x-1 / 2
<span>-4x < - 1/2 , now divide by -4 and switch signs </span>
<span>x > 1/8 </span>
<span>2. There is a 20% chance that it will snow on Monday and a 40% chance on Tuesday. What is the probability that it will NOT snow on both Monday and Tuesday? </span>
<span>P( NOT snow on both Monday and Tuesday) = (1-.2)(1-.4) = 12/25 </span>
<span>c. 12/25 </span>
<span>3. The total cost of renting a sailboat is $120 plus $60 a day. How many days was a sailboat rented if the total cost was $360? Solve. </span>
<span>120 + 60d = 360 </span>
<span>60d = 360 - 120 = 240 </span>
<span>d = 4 </span>
<span>4. Two cards are chosen at random without replacement from a deck of 52 cards containing 4 kings. Which expression could be used to find the probability of choosing two kings? </span>
<span>b. 4/52 x 3/51 </span>
<span>There are 4 x 3 ways to pick 2 kings </span>
<span>There are 52 x 51 ways to pick any two cards</span>
(x - 12)(x + 4) = 9
x² + 4x - 12x - 48 = 9
x² - 8x - 48 = 9 |add 48 to both sides
x² - 8x = 57
x² - 2x · 4 = 57 |add 4² to both sides
x² - 2x · 4 + 4² = 57 + 4² |use (a - b)² = a² - 2ab + b²
(x - 4)² = 57 + 16
(x - 4)² = 73 ⇔ x - 4 = √73 or x - 4 = -√73 |add 4 to both sides
x = 4 + √73 or x = 4 - √73
8÷2/7
8/1÷2/7
8/1*7/2
56/2
28
Hope this helps :)
Answer: c
Step-by-step explanation:
Answer:
3.2?? I am kinda confused
Step-by-step explanation:
