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Brut [27]
1 year ago
7

A system of equations is shown below. Solve for x. y = x² - 6x + 4 y = x + 1

Mathematics
1 answer:
rjkz [21]1 year ago
6 0

The value of x in the given quadratic equations is either -2.7 or -11.3.

<h3>What are quadratic equations?</h3>

A quadratic equation is a second-degree algebraic equation in x. ax² + bx + c = 0, where a and b are coefficients, x is the variable, and c is the constant term, is the quadratic equation in its simplest form.

Given first equation, y = x²- 6x + 4 second equation, y = x +1

Put the value of y in the first equation to get

x + 1 = x² - 6x + 4

Solving this equation

x² - 7x + 3 = 0

Using quadratic formula,

x = - b ± \frac{\sqrt{(b^{2}- 4ac)}}{2a}

x = - 7 ±  \frac{\sqrt{(-7)^{2}- 4(3)}}{2}

x = - 7 ± 4.3

Therefore in the given quadratic equations, the value of x can be either -2.7 or -11.3

For more information on quadratic equations, visit:

brainly.com/question/1863222

#SPJ13

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A survey is taken among customers of a fast-food restaurant to determine preference for hamburger or chicken. Of 200 respondents
kicyunya [14]

Answer:

                          Hamburger       Chicken

Adults                    65                        60         125

children                 55                        20          75

                             120                        80         200

a)What is the probability that a randomly selected individual is an adult?

Total no. of adults = 125

Total no. of people  200

The probability that a randomly selected individual is an adult = \frac{125}{200}=0.625

b) What is the probability that a randomly selected individual is a child and prefers chicken?

No. of child prefers chicken = 20

The probability that a randomly selected individual is a child and prefers chicken= \frac{20}{200}=0.1

c)Given the person is a child, what is the probability that this child prefers a hamburger?

No. of children prefer hamburger = 55

No. of child = 75

The probability that this child prefers a hamburger= \frac{35}{75}=0.46

d) Assume we know that a person has ordered chicken, what is the probability that this individual is an adult?

No. of adults prefer chicken = 60

No. of total people like chicken = 80

A person has ordered chicken, the probability that this individual is an adult= \frac{60}{80}=0.75

3 0
2 years ago
Help pls!Pls and ty!
faltersainse [42]

Answer:

a

Step-by-step explanation:

4 0
2 years ago
What percentage of the area under a normal curve is within 1, 2, and 3 standard deviations of the mean
Lemur [1.5K]

Answer:

You need to have a labotomy sir

Step-by-step explanation:

7 0
2 years ago
In the equation y = kx, the slope of the line is represented by the constant
vovangra [49]
K is the constant of proportionality also the same as slope.
You can see the commonality in the equations
y = kx
y = mx + b
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The answer is B.
7 0
3 years ago
Help me pls don’t put random
Vladimir [108]
I think it’s A
Sorry if I’m wrong
4 0
2 years ago
Read 2 more answers
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