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sergejj [24]
3 years ago
15

Please help im being timed Inverse of f(x)=15x+4

Mathematics
1 answer:
rusak2 [61]3 years ago
3 0

Answer:

f^{-1}(x) =

Step-by-step explanation:

let y = f(x), then rearrange making x the subject

y = \frac{1}{5}x + 4 ( subtract 4 from both sides )

y - 4 = \frac{1}{5}x ( multiply both sides by 5 to clear the fraction )

5y - 20 = x

Change y back into terms of x with x = f^{-1} (x) , then

f^{-1} (x) = 5x - 20

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Which statement is always true?
ryzh [129]
The correct answer is C. <span>Similar polygons are never congruent.</span>
3 0
3 years ago
today a boat valued at $45,000.Thebvalue is expected to decrease at a rate of 8.5% each year.What is the value of the boat expec
Stels [109]

Current value of the boat = $45000

Rate at which the value decrease = 8.5%

Value decreased after 1 year = \frac{8.5}{100}\times45000=3825

Hence, value becomes = 45000-3825=41175

Value decreased after 2nd year =

\frac{8.5}{100}\times41175=3499.875

Hence, value becomes = 41175-3499.875=37675.125

Value decreased after 3 year =

\frac{8.5}{100}\times37675.125=3202.385

Hence, value becomes = 37675.125-3202.385=34472.74

So, value of the boat after 3 years becomes $34472.74

3 0
3 years ago
What is the equation, in point slope form, of the line
melamori03 [73]

Answer:

y=3/2x+11/2

Step-by-step explanation:

Hello! Sorry  I just saw this

Anyways, let's continue

first, we need to find the equation of the line with the one that is (-2,-4) and (2,2)

first, we need to find the slope

the equation for slope is y2-y1/x2-x1

so let's label the points

x1=-2

y1=-4

x2=2

y2=2

now plug it in

2-(-4)/2-(-2)=6/4=3/2

now, let's turn it into a line

the point-slope form is y-y1=m(x-x1) (m=slope)

now, plug it in

y-(-4)=3/2(x-(-2))

simplify to

y+4=3/2(x+2)

turn into y=mx+b format

y+4=3/2x+3

subtract 4 on both sides

y=3/2x-1

Now for the line that is parallel.

Parallel lines have the same slopes, so you automatically know that the new line will be y=3/2x+b

To make sure (-3,1) is a solution to the point, put 1 as y and -3 as x

1=3/2(-3)+b

1=-9/2+b

add 9/2 on both sides

b=11/2 or 5.5

now, put it into the equation

y=3/2x+11/2

Hope this helps!

5 0
3 years ago
Maya says that value of the 6 in 0.006 is 1/10 of the value of the 6 in 0.6 . Is she correct? Explain
Nikolay [14]

Answer:

Maya is NOT correct  as

\frac{1}{1000} is  1/100 of the value \frac{1}{10}

Step-by-step explanation:

The value of 6 in 0.006 = \frac{1}{1000}

Also, the value of 6 in 0.6  = \frac{1}{10}

But, \frac{1}{1000} is not 1/10  of the value  \frac{1}{10}

as 1/10  of the value  \frac{1}{10}  =  \frac{1}{100}

Hence,Maya is NOT correct.

\frac{1}{1000} is  1/100 of the value \frac{1}{10}

8 0
3 years ago
I am a factor of 50 and a multiple of 5
oee [108]
Factors of 50: 1, 2, 5, 10, 25, 50
Multiples of 5: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ...

The numbers common are: 5, 10, 25, 50
The numbers that are not common are: 1, 2
8 0
3 years ago
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