Answer:
x = ±4.5
Step-by-step explanation:
4x² - 15 = 66
Add 15 to both sides.
4x² = 81
Divide both sides by 4.
x² = 20.25
Take the square root of both sides.
x = ±4.5
Hope this helps!
If you use the distributive property, you will multiply 4 by 2x to get 8x and 4 by -4 to get -16.
8x-16=8x+k
If you want infinitely many solutions the equations on both sides of the equal sign need to be the same. So, k would need to be -16.
Answer:
Win $1,423.59
Step-by-step explanation:
There are 52 cards in a deck, 13 of which are spades.
The probability if drawing two consecutive spades without replacement is:
Therefore, there is a 3 in 51 chance of you winning $225 and a 48 in 51 chance of you losing $12.
The expected value for 738 games is:
You are expected to win $1,423.59.
Answer:
Step-by-step explanation: