15 steps in 5 minutes 75 steps at the same speed

Answers

Answer 1

Answer: time taken to 15 steps = 5 min
time taken to 1 step = 5 / 15
= 1/3 min

time taken to 75 steps = (1/3) * 75
= 25 minutes

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Round 10.054 To 2 decimal places

What is the inverse of the function below? f(x)= x/4 -2

Answers

The inverse of function f(x) = x/4 - 2 is:

f^(-1)(x) = 4(x + 2).

Option C is the correct answer.

We have,

To find the inverse of the function f(x) = x/4 - 2, we can follow these steps:

Step 1: Replace f(x) with y: y = x/4 - 2.

Step 2: Swap the variables x and y: x = y/4 - 2.

Step 3: Solve the equation for y.

Let's start by isolating y:

x = y/4 - 2

x + 2 = y/4 (Adding 2 to both sides)

4(x + 2) = y (Multiplying both sides by 4)

So, the inversefunction is y = 4(x + 2).

However, it's common to write the inversefunction with the variable x instead of y.

Therefore,

The inverse of function f(x) = x/4 - 2 is:

f^(-1)(x) = 4(x + 2).

Learn more about functions here:

brainly.com/question/28533782

#SPJ2

$f(x)=(x)/(4)-2\to y=(x)/(4)-2\n\n\text{Interchange the y and the x}\n\nx=(y)/(4)-2\n\n\text{Solve for y}\n\n(y)/(4)-2=x\qquad|+2\n\n(y)/(4)=x+2\qquad|\cdot4\n\ny=4(x+2)$

$Answer:\ C.\ f^(-1)(x)=4(x+2)$

Help me please this is due tmr

Answers

50/2.5=20

20 is your unit rate

Solve the equation

4x + 10 = -26

x=

Answers

Answer:

x=-9.........

Step-by-step explanation:

.......

X=-9 Subtract 10 from -26 then divide by 4 and get -9

$2(x - 1) + 3(1 - 2x) = 5 - x$

Answers

Answer:

x = -4/3

Step-by-step explanation:

2(x-1) +3(1-2x) = 5-x

Distribute

2x-2 +3 -6x = 5-x

Combine like terms

-4x +1 = 5-x

Add 4x to each side

-4x+4x +1 = 5-x+4x

1 =5+3x

Subtract 5 from each side

1-5 =5-5 +3x

-4 = 3x

Divide each side by 3

-4/3 = 3x/3

-4/3 =x

Answer:

1-5 =5-5 +3x

-4 = 3x

Divide each side by 3

-4/3 = 3x/3

-4/3 =x

Step-by-step explanation:

1. Describe a situation in everyday life where negative numbers are used.

Answers

I want to buy a skateboard that costs $20. So I borrow $20 from you. I now owe you $20. Therefore, I am -20 in debt

In a sample of 200 observations, there were 80 positive outcomes. Find the standard error for the sample proportion.

Answers

The standarderror for the sample proportion 0.3995.

What is Standard Error?

The population mean's likelihood to differ from a sample mean is indicated by the standard error of the mean, or simply standard error. It reveals how much the sample mean would change if a study were to be repeated with fresh samples drawn from a single population.

given:

n= 200

and possible outcomes= 80

Standard deviation = √(80²/200)= 5.65

Now, standard error = $\sigma$ / √n