Ask question

Ask question

All categories

3 years ago

14

The probability of event A is 10%. What is the probability of its complement event?

1 answer:

algol [13]3 years ago

6 0

The probability would be unlikely 0 is impossible 25-50 is unlikely 50 through 75 is likely and 75 through 100 is certain

You might be interested in

16x²-81=0 solve the following quadratic equation

arsen [322]

$16x^2-81=0\\\\(4x)^2-9^2=0\\\\(4x-9)(4x+9)=0\iff4x-9=0\ \vee\ 4x+9=0\\\\4x=9\ \vee\ 4x=-9\\\\x=\frac{9}{4}\ \vee\ x=-\frac{9}{4}$

$or\\\\16x^2-81=0\\\\16x^2=81\ \ \ \ /:16\\\\x^2=\frac{81}{16}\\\\x=\pm\sqrt\frac{81}{16}\\\\x=-\frac{\sqrt{81}}{\sqrt{16}}\ \vee\ x=\frac{\sqrt{81}}{\sqrt{16}}\\\\x=-\frac{9}{4}\ \vee\ x=\frac{9}{4}$

7 0

3 years ago

Read 2 more answers

On a map, 90 miles is represented by 3 inches. A measure of inch on the map would represent miles.

yuradex [85]

Complete Question

On a map, 90 miles is represented by 3 inches. A measure of 1/2 inch on the map would represent miles.

Answer:

15 miles

Step-by-step explanation:

From the above question,

3 inches = 90 miles

1/2 inch = x miles

Cross Multiply

3 inches × x miles = 90 miles × 1/2 inch

x miles = 90 miles × 1/2 inch/3 inches

x miles = 15 miles

Therefore, a measure of 1/2 inch on the map would represent 15 miles

4 0

3 years ago

Three quarters of the boats in the marina are white, 4/7 of the remaining boats are blue, adn the rest are red. If there are 9 r

Sveta_85 [38]

Ask a parent because I have no clue.

4 0

4 years ago

erica would like to bake an 3-pound roast for a family gathering. the cookbook tells her to bake a 6-pound roast for 138 minutes

BabaBlast [244]

We know that we need to bake 6 pound for 138 minutes, then we have the proportion:

$\frac{6}{138}$

Let x be the time we need to bake the 3 pound roast, in this case we have the proportion:

$\frac{3}{x}$

By equating both ratios we have the proportion:

$\frac{3}{x}=\frac{6}{138}$

Now, by simplifying the right side of the proportion we have that:

$\begin{gathered} \frac{3}{x}=\frac{6}{138} \\ \frac{3}{x}=\frac{3}{69} \end{gathered}$

For this proportion to be equal we need that x=69, therefore we need to cook the 3 pound roast for 69 minutes.

8 0

1 year ago

How to turn this equation: <br> y= -1.02(x-3)^2+9.25<br> into factored form

MatroZZZ [7]

Answer:

$y=(102x-306-5\sqrt{3774})(102x-306+5\sqrt{3774})$

Step-by-step explanation:

You first equate it to zero to get:

$-1.02(x-3)^2+9.25=0$

Then solve using square root method

$-1.02(x-3)^2=-9.25$

$(x-3)^2=\frac{-9.25}{-1.02}$

$(x-3)^2=\frac{925}{102}$

$x=3\pm\sqrt{\frac{925}{102}}$

Or

$x=3\pm{\frac{5\sqrt{3774}}{102}}$

$x={\frac{306\pm5\sqrt{3774}}{102}}$

Now work it backwards

$102x-(306\pm5\sqrt{3774})=0$

$(102x-306-5\sqrt{3774})(102x-306+5\sqrt{3774})=0$

Hence the factored form is:

$y=(102x-306-5\sqrt{3774})(102x-306+5\sqrt{3774})$

8 0

3 years ago