3 years ago

Inverse function of exponential function

Mathematics

1 answer:

marta [7]3 years ago

3 0

$(( ln(3x) \div 2) - 1) \div 4$

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A scale drawing of a rectangular park had a scale of 1 cm = 100 m.

Brilliant_brown [7]

Answer:

521,400 meters squared

Step-by-step explanation:

With the 1cm = 100m scale

6.6 cm = 660m

7.9 cm = 790m

Area = 660 x 790 = 521,400 meters squared

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3 years ago

30r + –20 = 760 r = _____

andrey2020 [161]

Answer:

r = 26

Step-by-step explanation:

$30r+(-20)=760\\30r-20=760\\30r=780\\r=26$

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3 years ago

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Express the following in the usual form (a) 6.25×10-⁵

andrew-mc [135]

Answer:

0.0000625

Step-by-step explanation:

$10^{-5}=0.00001$

$6.25*10^{-5}=6.25*0.00001=0.0000625$

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3 years ago

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You purchase a cell phone for $125. the value of the cell phone decreases by about 20% annually. write a function at models the

djverab [1.8K]

F(x)=125-(125*0.2x)
to find the value of the phone after 3 years, you put x=3.
f(3)=125-(125*0.2(3))
f(3)=50

5 0

3 years ago

What is the equation of the line h Th ya has a y intercept of (0,-3) and passes through the point (-9,-9)

Nikolay [14]

Answer:

The line equation is given as: 3 y = 2 x - 9

Step-by-step explanation:

Here, Y intercept is at point ( 0.-3)

So, at x = 0, y = -3

or, C = -3

Also, the point on the equation line is (x,y) = (-9,-9)

Now, by SLOPE INTERCEPT FORM of a line equation,we get:

y = m x + C : m = slope of line ......... (1)

So, substituting the values of C and (x,y) , we get:

-9 = m (-9) + (-3)

or, -9 + 3 = - 9 m

or, m = -6/-9 = 2/3

or, m = 2/3

Now, substitute the value of m back in to the line equation (1)

$y = m x + C \implies y = (\frac{2}{3}) x - 3\\\implies 3y = 2x - 9$

Hence, the line equation is given as: 3 y = 2 x - 9.

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3 years ago