2 years ago

If f (x) = 8 (5x - 2) find f (x)

Mathematics

1 answer:

Pepsi [2]2 years ago

8 0

Answer:

f-1(x) = (x - 16)/40

Step-by-step explanation:

Call f(x) = y

Interchange x and y

x = (5y + 2)*8 Remove the brackets

x = 40y + 16 Subtract 16 from both sides

x - 16 = 40y Interchange the left and right sides

40y = x - 16 Divide by 40

y = (x - 16)/40

f-1(x) = (x - 16)/40

You might be interested in

Which one weighs more a pound of bricks or a pound of cotton balls?

lianna [129]

Neither because they bot weigh a pound

6 0

2 years ago

Read 2 more answers

Write and solve a proportion to answer the question.

andreev551 [17]

Number 1 is 1/20 ,so number 0.5 is 1/40 of 20. so p=100/40 = 10/4 = 2.5%
so 0.5 is 2.5% of 20
proof: 2.5*20/100 =50/100 = 0.5

5 0

3 years ago

Write 2/15 as a decimal.

Cloud [144]

If you need to write a number as a decimal, it means that you need to write is a an x divided by a power of 10.
you can use this formula:
$\frac{2}{15} = \frac{x}{10}$

now let's multiply both sides by 10:
$\frac{20}{15} = x$
and simplyfy:
(by dividing the first fraction's elements by 5)
$\frac{4}{3} = x$

change improper fraction into a mixed number
$1\frac{1}{3} = x$

and 1 over 3 is 0.33333...

so the answer is 1.333333 - we can also write it as 1.(3)

5 0

2 years ago

Write the equation of the line that passes through the points (3,4) and (1,5)

Illusion [34]