All categories

3 years ago

Sole and check 5y + 7 = 14y + 7

2 answers:

8 0

$5y + 7 = 14y + 7 \\ \\ 5y = 14y \ / \ cancel \ 7\\ \\ 5y - 14y = 0 \ / \ terms \ to \ one \ side\\ \\ -9y = 0 \ / \ simplify \\ \\ y = 0 \ / \ divide \ by \ -9 \\ \\ CHECK \\ \\ 5y + 7 = 14y + 7 \ / \ let \ y = 0 \\ \\ 5 \times 0 + 7 = 14 \times 0 + 7 \\ \\ Answer: \fbox {y = 0}$

MA_775_DIABLO [31]3 years ago

7 0

5y + 7=14y+7
-5 -5
7=9y+7
-7 -7
0 9y
0/9=0
and i dont know if its right and i dont know how to check it

You might be interested in

Felicia goes to a doctor's office that has a parking garage below the building. She parks her car four levels below the street l

Contact [7]

Answer:

first off here are the things you need to know:

She parked her car 4 levels below the street

so let's make that 4

and he doctor's office is at the fifth level of the building which makes it 5

so; 4+5=9 meaning she ride the elevator 9 levels

7 0

2 years ago

Determine the domain of the function (fog)(x) where f(x)=3x-1/x-4 and g(x)=x+1/x

Katarina [22]

Answer: (-∞,-1) ∪ (0,+∞)

Step-by-step explanation: The representation fog(x) is a representation of composite function, meaning one depends on the other.

In this case, fog(x) means:

fog(x) = f(g(x))

fog(x) = $3(x+\frac{1}{x} )-\frac{1}{x+\frac{1}{x} } -4$

$fog(x)=3x+\frac{3}{x} -\frac{1}{\frac{x^{2}+x}{x} } -4$

$fog(x)=3x+\frac{3}{x} -\frac{x}{x^{2}+x} -4$

$fog(x)=\frac{3x^{2}(x^{2}+x)+3(x^{2}+x)-x-4x(x^{2}+x)}{x(x^{2}+x)}$

$fog(x)=\frac{3x^{4}+3x^{3}+3x^{2}+3x-x-4x^{3}+4x^{2}}{x(x^{2}+x)}$

$fog(x)=\frac{3x^{4}-x^{3}-x^{2}+2x}{x(x^{2}+x)}$

This is the function fog(x).

The domain of a function is all the values the independent variable can assume.

For fog(x), denominator can be zero, so:

$x(x^{2}+x) \neq 0$

If x = 0, the function doesn't exist.

$x^{2}+x \neq0$

$x(x+1) \neq0$

$x+1\neq0$

$x\neq-1$

Therefore, the domain of this function is: -∞ < -1 or x > 0

5 0

3 years ago

What is the general equation of a sine function with an amplitude of 6, a period of StartFraction pi Over 4 EndFraction, and a h

Katen [24]

Answer:

C: $y = 6 \sin (8(x-\frac{\pi}{2} ))$

Step-by-step explanation:

Amplitude is changed by multiplying the entire trig function by a number, by default the amplitude is 1, so multiplying by 6 is necessary; eliminate A and B

Horizontal shift is going through the x axis, so it must be subtracted from the x value. This is only seen in choice C of the remaining answers.

Calculating the period isn't necessary because we already found the right answer but in case you need it in the future; the period is by default 2pi, to get to pi/4, it had to be 8 times smaller, so multiplying x and translations on x by 8 will get you the correct period.

3 0

2 years ago

Read 2 more answers

The matrix 1 2 4(0 1 6/7 is being used to solve a system of equations. The solution to the system is

loris [4]

| 1 2 ||x| = |4| - | 3 -1 ||y| |6| -3 | 1 2||x| = |4| 
| 3 -1||y| |6| 

|-3 -6||x| = |-12| 
| 3 -1||y| |6 | 

| 0 -7 ||x| = | -6 | 
| 3 -1 ||y| | 6 | 

y = 6/7 

x = 16/7

5 0

3 years ago

How do i solve thus equation 7+5(x-2)=12

ycow [4]

Answer: x=3

Step-by-step explanation:

7+5(x-2)=12

Open bracket

7+5x-10=12

Collect like terms

5x-3=12

5x=12+3

5x=15

X=15/5

X=3

3 0

3 years ago

Read 2 more answers