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3 years ago

You don’t know how important this is Please help me!!

Mathematics

1 answer:

Natali5045456 [20]3 years ago

7 0

Answer:

f(x)= $\frac{7}{5}$ x- $\frac{6}{5}$

Step-by-step explanation:

First put 7x-5y=6 into slope intercept form

y= $\frac{7}{5}$ x- $\frac{6}{5}$

Then put it into f(x) form

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Graph the linear equation

Salsk061 [2.6K]

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4 years ago

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What point is on the graph of every direct variation equation

Alexeev081 [22]

Answer: The point (0,0)
This point is also known as the origin

The reason why is because every direct variation equation is of the form y = k*x
where k is some fixed number

If we plugged in x = 0 it leads to y = k*x = k*0 = 0. So (x,y) = (0,0)

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3 years ago

I need help, has to be turned in tomorrow morning!

Kipish [7]

Answer: (5,5)

Step by step explanation:

We have the two equations

-7x + y = -30 and y = 2x - 5

one of the equations "define" y therefore we can plug the value of y into the other equation and solve for x

-7x + y = -30

plug in y = 2x - 5

-7x + 2x - 5 = -30

combine like terms

-5x - 5 = -30

add 5 to both sides

-5x = -25

divide both sides by -5

-5x/-5 = x and -25/-5 = 5

we're left with x = 5

we now plug in the value of x into one of the equations and solve for y

2x - 5 = y

x = 5

2(5) - 5 = y

multiply 2 and 5

10 - 5 = y

subtract

y = 5

the solution is (5,5)

3 0

3 years ago

Find each x-value at which f is discontinuous and for each x-value, determine whether f is continuous from the right, or from th

fredd [130]

Using continuity concepts, the answers are given by:

The function is right-continuous at x = 0.

The function is left-continuous at x = 1.

------------------------------------

A function f(x) is continuous at x = a if:

$\lim_{x \rightarrow a^{-}} f(x) = \lim_{x \rightarrow a^{+}} f(x) = f(a)$

If $\lim_{x \rightarrow a^{-}} f(x) = f(a)$ , the function is left-continuous.
If $\lim_{x \rightarrow a^{+}} f(x) = f(a)$ , the function is right-continuous.
For the given function, the continuity is tested at the points in which the definitions are changed, x = 0 and x = 1.

------------------------------------

At x = 0.

Approaching from the left, it is less than 0, thus:

$\lim_{x \rightarrow 0^-} f(x) = \lim_{x \rightarrow 0} x + 9 = 0 + 9 = 9$

Approaching from the right, it is more than 0, thus:

$\lim_{x \rightarrow 0^+} f(x) = \lim_{x \rightarrow 0} e^x = e^0 = 1$

The numeric value is:

$f(x) = e^0 = 1$

Since $[tex]\lim_{x \rightarrow 0^+} f(x) = f(0)$ , the function is right-continuous at x = 0.

------------------------------------

At x = 1.

$\lim_{x \rightarrow 1^-} f(x) = \lim_{x \rightarrow 1} e^x = e^1 = e$

$\lim_{x \rightarrow 1^+} f(x) = \lim_{x \rightarrow 1} 4 - x = 4 - x = 3$

$f(1) = e^1 = e$

Since $[tex]\lim_{x \rightarrow 1^-} f(x) = f(1)$ , the function is left-continuous at x = 0.

A similar problem is given at brainly.com/question/21447009

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3 years ago

The Earth is 146 million kilometers from the sun, and Neptune is 4.5 billion kilometers from the sun. What is the difference in

Rudik [331]

4.5 billion minus 146 million equals 4354000000. Then you must express it in scientific notation. To do this you move the decimal point so that there is only one number in front of it. Then count how many spaces you moved it and that will be your exponent. If you moved the exponent to the left then the exponent is positive, if you moved the point to the right then the exponent is negative. The format in scientific notation is: all of the numbers are included until the rest are zeros x 10^(to the power of) the number of places you moved the decimal.

So, in this problem, your answer is A.

6 0

4 years ago

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