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Citrus2011 [14]
3 years ago
15

HURRYYYY

Mathematics
2 answers:
GarryVolchara [31]3 years ago
6 0

Answer:

There are no real number solutions.

Step-by-step explanation:

2x^{2} +8=0\\2x^{2} =-8\\x^{2} =-4\\x=\sqrt{-4}

Real numbers are a whole range of numbers including: Natural Numbers(1;2;3...), Whole Numbers(0;1;2...), Integers(...;-2;-1;0;1;2;...), Rational Numbers(-0.6; -0.2; 0 ;1.5 etc.) and Irrational Numbers(\sqrt{2};\sqrt{3};π; etc.). All these number comprise Real Numbers.

Imaginary Numbers are the square roots of negative Integers, which is the case for this question.

Radda [10]3 years ago
5 0
There is no help me to do this sorry
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There are 3 boxes. First box contains 100 components of which 20 % are defective, second box contains 200 components of which 25
natali 33 [55]

Answer:

Step-by-step explanation:

Given that there are 3 boxes. First box contains 100 components of which 20 % are defective, second box contains 200 components of which 25 % are defective, third box contains 300 components of which 40 % are defective.

Box is selected randomly and from this box one component is selected randomly. The chosen component turned out to be defective.

Here A1, A2 and A3 events from drawing I, II and III box are mutually exclusive and exhaustive

B = The drawn ball is defective

Required probability

a) second box = P(A2/B)

=\frac{P(A_2B)}{P(A_1B+P(A_2B+P(A_3B}

(by Bayes theorem of conditional probability)

= \frac{\frac{1}{3} 0.25}{\frac{1}{3} 0.20)+\frac{1}{3} 0.25)+\frac{1}{3} 0.40)} \\=\frac{25}{85} \\=\frac{5}{17}

b) third box = P(A3/B)

=\frac{\frac{1}{3} 0.40}{\frac{1}{3} 0.20)+\frac{1}{3} 0.25)+\frac{1}{3} 0.40)} \\=\frac{40}{85} \\=\frac{8}{17}

4 0
3 years ago
Use the grouping method to factor the polynomial below completely. x3 + 2x2 + 3x + 6
Phoenix [80]

Hello from MrBillDoesMath!

Answer:

(x+2) ( x^2 + 3)

Discussion:

x^3 + 2x^2 + 3x + 6 =  

( x^3 + 2x^2) + (3x + 6) =         => factor "x^2" from the first term; factor 3

                                                    from the second term

x^2( x + 2) + 3( x+2)  =             => factor (x+2) from each term

(x+2) ( x^2 + 3)

Thank you,

MrB

6 0
3 years ago
Read 2 more answers
Enter the equation in slope-intercept form. Then graph the line described by the equation. -4x - 3y = 9
Alexus [3.1K]

Answer:

Step-by-step explanation:

-3y = 4x +9

y= -3/4x -3

5 0
3 years ago
A car dealership sold 480 vehicles last year. Of these vehicles, 15% were minivans.
natulia [17]
You can use my photo as reference but its going to be 15/100 of 480

7 0
3 years ago
The product of 3 and a number x is 23 . What is the value of x?
Scrat [10]
I believed there's a typo in your question
<span>The product of 3 and a number x is 2/3
if so
</span>3x = 2/3
  x = 2/3 * 1/3
  x = 2/9

answer 
x = 2/9


8 0
4 years ago
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