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3 years ago

Please help with this math question (photo)

Mathematics

1 answer:

miss Akunina [59]3 years ago

6 0

If you could move the photo a little I can answer it

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A clothes dryer having a wattage of 5000 watts is used for 25 hours each month. How many kilowatt hours of electricity does the

taurus [48]

Answer:20000

Step-by-step explanation:

30+1000+4000

5 0

3 years ago

If f(x) = 6x – 4, then f^-1(x)=

guapka [62]

Answer:

$f^{-1}(x)=\frac{x}{6}+\frac{2}{3}$

Step-by-step explanation:

Given function.

$f(x)=6x-4$

To find the inverse function $f^{-1}(x)$

Step 1:

Replace $f(x)$ with $y$ in the function.

$y=6x-4$

Step 2:

Interchange $y$ with $x$ in the equation.

$x=6y-4$

Step 3:

Solve for $y$ .

We have $x=6y-4$

Adding 4 to both sides,

$x+4=6y-4+4$

$x+4=6y$

Dividing each term by 6 to isolate $y$

$\frac{x}{6}+\frac{4}{6}=\frac{6y}{6}$

$\frac{x}{6}+\frac{4}{6}=y$

Simplifying fractions by dividing the numerator and denominator by their GCF.

$\frac{x}{6}+\frac{4\div 2}{6\div 2}=y$

$\frac{x}{6}+\frac{2}{3}=y$

Thus the equation of $y$ is:

$y=\frac{x}{6}+\frac{2}{3}$

Step 4:

Replace $y$ with $f^{-1}(x)$

$f^{-1}(x)=\frac{x}{6}+\frac{2}{3}$ (Answer)

Thus, we have the inverse function

8 0

3 years ago

What is the value of x? y = 3 − 3x

serious [3.7K]

The value of x is X=-y over 3 +1

8 0

3 years ago

Which function below has the largest slope?

vova2212 [387]

f(x) as a linear equation:

gradient = (12-4)/(4-2) = 4

y - 4 = 4(x - 2)

y = 4x - 4

Therefore f(x) = 4x - 4

g(x) = 10x - 4

Since it already started at 10 and it increases by one every level (x):

h(x) = x + 10

Therefore, since g(x) has the largest gradient (10x), it has the largest slope

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3 years ago

What is the equation of the line in slope-intercept form

andreev551 [17]

Answer:

y = -3/5x - 2

6 0

3 years ago