2(3)^2= 18 that is with a(3) squared or 2(3)=6 and 6squared or 6^2 = 36.
Answer:
All real numbers
Step-by-step explanation:
21 - 7x = 7(3 - x)
21 - 7x = 21 - 7x
Since both sides of the equation are equal, the answer is all real numbers.
Answer:
A. 27 / (6+c)
Step-by-step explanation:
If we assume Barry is spreading the cards among the suits, then he needs enough suits to hold the total of 27 cards he has. Thus, we need to divide the total number of cards by the total number of cards he puts in each suit, giving the option A as the correct answer.
I hope that works for you!
<u>Part A</u>
x² + 5x + 4 = 0
x = <u>-(5) +/- √((5)² - 4(1)(4))</u>
2(1)
x = <u>-5 +/- √(25 - 16)</u>
2
x = <u>-5 +/- √(9)</u>
2
x = <u>-5 +/- 3</u>
2
x = <u>-5 + 3</u> U x = <u>-5 - 3</u>
2 2
x = <u>-2</u> x = -<u>8</u>
2 2
x = -1 x = -4
<u>Part B</u>
4x² - 12x + 5 = 0
x = <u>-(-12) +/- √((-12)² - 4(4)(5))</u>
2(4)
x = <u>12 +/- √(144 - 80)</u>
8
x = <u>12 +/- √(64)</u>
8
x = <u>12 +/- 8</u>
8
x = <u>3 +/- 2</u>
2
x = <u>3 + 2</u> U x = <u>3 - 2</u>
2 2
x = <u>5</u> x = <u>1</u>
2 2
x = 2.5 x = 0.5
<u>Part C</u>
2x² - 10x + 3 = 0
x = <u>-(-10) +/- √((-10)² - 4(2)(3))</u>
2(2)
x = <u>10 +/- √(100 - 24)</u>
4
x = <u>10 +/- √(76)</u>
4
x = <u>10 +/- 2√(19)</u>
4
x = <u>5 +/- √(19)</u>
2
x = 2.5 <u>+</u> 0.5√(19)
x = 2.5 + 0.5√(19) U x = 2.5 - 0.5√(19)