Answer:
4.84
Step-by-step explanation:
Problem 1
Do you know what a complex number is? If you do not, you can get an answer but not one you will like much.
(3x)^2 + 27 = 0 remove the brackets. Remember to square what's inside the brackets.
9x^2 + 27 = 0 Divide both terms by 9
9x^2/9 + 27/9 = 0
x^2 + 3 = 0 Subtract 3 from both sides.
x^2 = -3 Take the square root from both sides.
x = sqrt(-3) but the square root of - 3 = 3i
x = i*sqrt(3)
Problem 2
x^ - 8x + 1 = 0
a = 1
b = - 8
c = 1
x = [- -8 +/- sqrt(b^2 - 4*a*c) ]/(2*a) Quadratic formula
x = [ 8 +/- sqrt( (-8)^2 - 4(1*1)]/2 Substitute Givens and combine
x = [ 8 +/- sqrt( 64 - 4 )] /2 Subtract 4
x = [ 8 +/- sqrt (60)]/2 Break 60 into 4 * 15
x = [ 8 +/- sqrt (4*15)]/2 Notice 4 is a perfect square. sqrt4 = 2
x = [ 8 +/- 2*sqrt(15)] / 2 Divide through by 2
x = 8/2 +/- sqrt (15)
x = 4 +/- sqrt(15) the twos were gone
Answer:
Hello!!
your answer will be<u> option D.96m^2</u>
Step-by-step explanation:
hope it's helpful
have a great day
The answer to this question, I believe is 8,000
<span>The answer is 15x + 10y ≤ 250 and x + y ≥ 20.. x - the number of long-sleeved shirts. y - the number of short-sleeved shirts. Long-sleeved shirts cost $15 each: 15x. Short-sleeved shirts cost $10 each: 10y. Jacob can spend at most $250: 15x + 10y ≤ 250. He wants to order at least 20 shirts: x + y ≥ 20. Therefore, we have two inequalities: 15x + 10y ≤ 250 and x + y ≥ 20.</span>