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3 years ago

15. If f(x)=9x+1,find f^-1(f(3)).

Mathematics

1 answer:

meriva3 years ago

3 0

The awnser is 3 hope this helps!

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If y=3x + 2, find the value of y when x = -3

Tatiana [17]

Y=3x
y=3(-3)
y=-9

Hope this helped.... Sorry if it ends up being wrong!

7 0

3 years ago

Read 2 more answers

Un motor de combustión interna que cumple el ciclo ideal de Otto, funciona con aire como gas ideal. Tras el proceso de admisión

sineoko [7]

Answer:

i no speak spanish

Step-by-step explanation:

6 0

3 years ago

Kelly made a blueberry pie. After measuring the pie tin, Kelly calculated it has an area of 78.5 square inches. What is the pie

Lostsunrise [7]

Answer:

The radius is 5 in

Step-by-step explanation:

The area of a circle is given by the formula

A = pi *r^2

We know the area = 78.5 in^2 (volume would be in^3 area is in^2)

78.5 = 3.14*r^2

Divide each side by 3.14

78.5/3.14 = 3.14/3.14*r^2

25 = r^2

Take the square root of each side

sqrt(25) sqrt(r^2)

5 =r

6 0

3 years ago

PLEASE HELP ME I NEED HELP

GarryVolchara [31]

Answer:

13 is c

Step-by-step explanation:

to find the length of a diagonal, pretend as if you are finding the hypotenuse of a triangle.

5^2 + 12^2 = c^2

25 + 144 = 169

the square root of 169 is 13

5 0

3 years ago

A person gets on and off a bathroom scale four times. The four readings (in pounds) are 148, 151, 150, and 152. Each time after

Ganezh [65]

Answer:

See explanation below

Step-by-step explanation:

Since each time after the person gets off the scale, the reading is 2 lb the person's weight must be near the mean of

148-2, 151-2, 150-2, 152-2; that is to say, near the mean of 146, 149, 148, 150 = (146+149+148+150)/4 = 148.25

We could estimate the uncertainty as the standard error SE

$\bf SE=\frac{s}{\sqrt{n}}$

where

s = standard deviation of the sample

n = 4 sample size.

Computing s:

$\bf s=\sqrt{\frac{(146-148.25)^2+(149-148.25)^2+(148-148.25)^2+(150-148.25)^2}{4}}=1.479$

So, the uncertainty is 1.479/2 = 0.736

It is not possible to estimate the bias, since it is the difference between the true weight and the mean, but we do not know the true weight.

5 0

3 years ago