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3 years ago

Solve y=f(x) for x then find the input when the output is 6 f(x)=x+9

Mathematics

1 answer:

r-ruslan [8.4K]3 years ago

4 0

x = -3

So to figure this out we can readjust the equation to make it easier to solve

$f(x) = x + 9$ is equal to $x+9 = 6$

From here we can just subtract 9 from both sides and we get our answer!

$x+(9-9) = (6-9)\\x = -3$

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A system of linear equations with fewer equations than unknowns is sometimes called an underdetermined system. Can such a system

egoroff_w [7]

Answer:

So such system with fewer equations than unknowns can never have a unique solution.

Step-by-step explanation:

Linear equations are equations which contain variable with degree 1.

The variables can be 1 or 2 or any other number

say there are n varaibles

Then to solve this we must have n independent equations.

If number of equations are less than number of variables we can have parametric solutions only with infinite points lying on it.

There is no chance for this to have a unique solution.

For unique solutions, there must be equal number of equations with the variables and the determinant formed by the coefficients should not be 0.

So such system with fewer equations than unknowns can never have a unique solution.

3 0

3 years ago

I am so confused, can someone help

marta [7]

Answer:

Step-by-step explanation:

a. To solve for "y" you want to isolate the variable. What this means is you want to keep "y" on its own. To do this first we will subtract 2x from the equation making 4y = 36 - 2x. Next, we will get rid of 4 to do this divide 4 from both sides. y = (36 - 2x)/4

*I have to go in a bit so sry for no explenation*

b. h = 2a/b

c. x = 1/4y + -3/4

6 0

3 years ago

Read 2 more answers

lorena lifeguards at a lap pool that is 25 yards long, 10 ards wide, and 2 yards deep. There is a drain around he entire top edg

Varvara68 [4.7K]

The true statements about the pool are

The drain is best measured using perimeter
The area of the cover is 250 square yards
One edge of the pool measures 10 yd

<h3>How to determine true statements?</h3>

The given parameters are:

Length = 25 yards
Width = 10 yards
Depth = 2 yards

To measure the drain, we simply calculate the perimeter of the edge of the pool.

This means that (a) is correct

When the volume is calculated, the unit is cubic yard or yd³.

This means that (b) is wrong

The area of the cover is:

Area = Length * Width

This gives

Area = 25 yards * 10 yards

Evaluate

Area = 250 square yards

This means that (c) is correct

The length of the drain is calculated as:

Perimeter = 2 *(Length + Width)

This gives

Perimeter = 2 * (25 + 10)

Evaluate

Perimeter = 70

This means that (d) is wrong

Lastly (e) is correct, because the width of pool is 10 yards

Read more about perimeter and volume at:

brainly.com/question/15465114

#SPJ1

7 0

2 years ago

What are the zeros of fx) =-8x+ 16? Yes

timofeeve [1]

Answer:

There is one Zero.

Step-by-step explanation:

Hope this helps:)

5 0

3 years ago

Read 2 more answers

I WILL GIVE BRILLANT

taurus [48]

I think 169

Reason just add

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3 years ago