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4 years ago

In a sample of 5000 flips of a fair coin, tails will always come up 2500 times.

Mathematics

1 answer:

rodikova [14]4 years ago

8 0

true or false? no question?

if so

Faults because 50% is based on each time you flip not the total amount

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What is 5.1 mi to feet

tatuchka [14]

Answer: 5.1 miles = 26928 feet

Step-by-step explanation:

1 mile = 5280 feet

0.1 miles = 528

times that by 5

5 miles = 26400 feet

add

26928 feet

7 0

4 years ago

7× 2/9 express in whole or mixed number

irina [24]

I think it is a mixed number sorry if I’m wrong

6 0

3 years ago

Which equation is the inverse of y = 9x2 - 4?

m_a_m_a [10]

Answer:

The inverse will be:

$y' = \frac{\sqrt{x+4}}{3}$

Step-by-step explanation:

In order to find the inverse of the equation, we do a variable change, since we are finding the inverse, :

$f(x) = 9x^{2} - 4$

$y = 9x^{2} - 4$

$x = 9y' ^{2} - 4$

Now solve for y'.

First add 4 in both sides of the equation and change to the left y'.

$x + 4= 9y'^{2} - 4+4$

$9y'^{2}$ = x + 4

Second divide by 9

$9y'^{2}$ /9 = (x + 4)/9

$y'^{2}$ = (x + 4)/9

Now you will have to clear y, with the square root.

$[tex]y'^{\frac{2}{2}} = \sqrt{x + 4} / \sqrt{9}$ [/tex] =

Simplifying terms

$y' = \frac{\sqrt{x+4}}{3}$

$f^{-1}(x) = \frac{\sqrt{x+4}}{3}$

You can check the answer by doing the evaluation of the following equation:

(f o $f^{-1}$ ) (x)

substitute the equation for y' or inverse function $f^{-1}$

f( $\frac{\sqrt{x+4} }{3}$ )

Now substitue the value into f(x)

You will have

$= 9(\frac{\sqrt{x+4} }{3}} )^{2} - 4\\\\Solving\\\\9(\frac{{x+4} }{9}} ) - 4$

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3 years ago

What is 1+3+1+1+1+1+1+1+1+1+1+1+1+1+1+1

Gemiola [76]

Step-by-step explanation:

MARK ME BRAINLIEST THANKS MY ANSWER PLEASE

4 0

3 years ago

Read 2 more answers

8x − 4y = −16 <br> 3x + 15y = −6

mr_godi [17]

Answer:

good job that is correct

Step-by-step explanation:

goooooooooooooooooooooooood joooooooooooooooob

yep

6 0

3 years ago