I just need help typing it out

HELP PLEASE FOR 35 POINTS!!!! Solve the rational equation 3 divided by x equals quantity 4 times x plus 3 divided by x squared,

denis23 [38]

Answer:

$x=-3$

Step-by-step explanation:

So, we are given:

$\frac{3}{x}=\frac{4x+3}{x^2}$

First, we should immediately rule out 0 as an answer. This is because the if $x=0$ , the equation would be undefined.

$x\neq 0$

Now, cross multiply.

$3(x^2)=x(4x+3)$

$3x^2=4x^2+3x$

Divide everything by x (and we can do this safely because we already know x cannot be equal to zero).

$3x=4x+3$

$-x=3$

$x=-3$

We didn't run into any possibilities for extraneous solutions.

7 0

2 years ago

Tony’s Electronics is marking down the price of a TV 23% from the original price of $175. Which expression can be used to find t

Arlecino [84]

Answer:

The sale price is $\$134.75$

The expression is $\$175(0.77)$

Step-by-step explanation:

we know that

The sale price is equal to subtract the discount price from the original price

The discount price is equal to multiply the original price by the percent discount in decimal form

Let

x ----> the sale price

y ---> discount price

$23\%=23/100=0.23$ ----> percent discount in decimal form

$y=\$175(0.23)=\$40.25$

$x=\$175-y$

substitute

$x=\$175-\$40.25=\$134.75$

therefore

the expression is

$175-0.23(175)\\175(1-0.23)\\175(0.77)$

3 0

2 years ago

Read 2 more answers

For simple linear regression, y = β0 + β1x + u, which one of the following statements is true?

RSB [31]

Answer:

Option a) u is called the "error term". It is the error we make in prediction

Option d) x is called the independent variable because x is independent from y and u.

Step-by-step explanation:

We are given the following information in the question:

$y = \beta_0 + \beta_1x + u$

where y is the dependent variable, x is the independent variable.

$\beta_0$ : It is the value of y when x is zero, that is y-intercept.

$\beta_1$ : It is the coefficient of x in predicting the dependent variable y.

u is the error term.

An error term represents the margin of error.
It refers to the sum of the deviations within the regression line, that is the difference between the predicted value and the observed value of y.

Thus, Option A) u is the error term and Option D) x is called the independent variable because x is independent from y and u are the correct answer.

6 0

2 years ago

CAN SOMEONE PLEASE HELP ME???

d1i1m1o1n [39]

Answer:

Option D, x = 4

Step-by-step explanation:

Option A: y = 4 doesn't work because that line would be horizontal

Option B: y = 4x doesn't work because that would be diagnol

Option C: x = -4 doesn't work because that would a vertical line at -4

<em>Option D: x = 4 works because that would a vertical line at 4</em>

<em />

Answer: Option D, x = 4

6 0

3 years ago

<img src="https://tex.z-dn.net/?f=f%28x%29%20%3D%201%20-%202x%20%20%5C%5C%20g%28x%29%20%3D%20x%20%2B%204%20%5C%5C%20h%28x%29%20%

antiseptic1488 [7]

Answer:

(x-3)(x+2) i.e. x2 - x -6 i.e. p = -1 and q = -6

Step-by-step explanation:

7 0

2 years ago