Answer:
Step-by-step explanation: -b ± √(b² - 4ac)
Let's solve for x using the quadratic formula x = ------------------------
2a
In this case the coefficients are 2, -7 and 9, so the discriminant, b^2 - 4ac, is (-7)^2 - 4(2)(9), or 49 - 72 = -23.
The roots (zeros) of this quadratic are thus:
-(-7) ± i√23
x = ----------------------
4
or
7 ±i√23
x = -------------------
4
Answer:
lol i remember answering this question
Step-by-step explanation:
<h2>MARK ME BRAINLIEST PLZZZZZZZZZZZZZZZZZZZZZZ</h2>
The first option is your answer.
Sigma notation is just a fancy way to shorten a sum of a series of numbers using a set equation. The "n =" tells you where to start in the sequence and the top number tells you where to stop.
B. $0.35
since to find the unit rate of one candy bar, you have to divide $350 by 1000 and you get $0.35
the rate is 350/1000 = 0.35/1
Answer:
x = 36
Step-by-step explanation:
The angles 3x - y and 2x + y form a straight angle and are supplementary, so
3x - y + 2x + y = 180
5x = 180 ( divide both sides by 5 )
x = 36
-----------------------------------------------
5y and 3x - y are vertical angles and congruent, hence
5y = 3x - y ( add y to both sides )
6y = 3x ← substitute x = 36
6y = 3 × 36 = 108 ( divide both sides by 6 )
y = 18
