2x - 3 < x + 2 ≤ 3x + 5
<u> - 2 - 2 - 2</u>
2x - 5 < x ≤ 3x + 3
The solution set is (2x - 5, 3x + 3}.
Answer:
90
Step-by-step explanation:
15x12=180
180/2=90
Answer:
7/4
Step-by-step explanation:
y-3/2=1/4
y=1/4+3/2
y=1/4+6/4
y=7/4
Please mark me as Brainliest if you're satisfied with the answer.
Answer:
1/2
Step-by-step explanation:
50-50 chance they will have a boy each time, 50-50 chance they will have a girl each time
This is a quadratic equation with a general equation of ax^2 + bx + c.
The quadratic formula can help to get the roots of the equation. We know the highest degree of that equation is 2; so there will be also two roots.
The quadratic formula is
x = [-b ± √(b^2 - 4ac)] / 2a
With a = 1, b = 7, c = 2,
x = {-7 ± √[(7)^2 - 4(1)(2)]} / 2(1) = (-7 ± √41) / 2
So the two roots are
x1 = (-7 + √41) / 2 = -0.2984
x2 = (-7 - √41) / 2 = 0.2984
This is also another way of factorizing the equation
(x + 0.2984)(x + 0.2984) = x^2 + 7x + 2
