Answer:
$0.40 per minute
Step-by-step explanation:
You divide 6.40 by 16 to get 0.40.
To fact check this, I multiplied 0.40 by 16 and got 6.40.
Answer:
![n=-0.24](https://tex.z-dn.net/?f=n%3D-0.24)
Step-by-step explanation:
![3\left(-0.4n-0.7\right)=-3.2n-2.58](https://tex.z-dn.net/?f=3%5Cleft%28-0.4n-0.7%5Cright%29%3D-3.2n-2.58)
Use distributive property.
![-1.2n-2.1=-3.2n-2.58](https://tex.z-dn.net/?f=-1.2n-2.1%3D-3.2n-2.58)
![-1.2n-2.1+2.1=-3.2n-2.58+2.1](https://tex.z-dn.net/?f=-1.2n-2.1%2B2.1%3D-3.2n-2.58%2B2.1)
![-1.2n=-3.2n-0.48](https://tex.z-dn.net/?f=-1.2n%3D-3.2n-0.48)
![-1.2n+3.2n=-3.2n-0.48+3.2n](https://tex.z-dn.net/?f=-1.2n%2B3.2n%3D-3.2n-0.48%2B3.2n)
![2n=-0.48](https://tex.z-dn.net/?f=2n%3D-0.48)
![\frac{2n}{2}=\frac{-0.48}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B2n%7D%7B2%7D%3D%5Cfrac%7B-0.48%7D%7B2%7D)
![n=-0.24](https://tex.z-dn.net/?f=n%3D-0.24)
d(x) = { (x,y): y = sqrt(x) and y >=0 }
since sqrt function requires x to be >=0 so
<u>x >= 0</u>
A 52-card deck is made up of an equal number of diamonds, hearts, spades, and clubs. Because there are 4 suits, there is a 1/4 chance to draw one of them, in our case, spades.
There are 4 aces in a 52-card deck, so the chance of drawing one is 4/52, or 1/13.
The question asks for the probability of drawing an ace or a spade. Because it uses the word "or," we add the probabilities together. This is because there is a chance of drawing either of the cards; it doesn't have to meet both requirements to satisfy the statement.
However, if the question were to say "and," we would multiply the two probabilities.
Let's add 1/4 and 1/13. First, we can find a common denominator. We can use 52 because both fractions can multiply into it (since the ratio came from a deck of 52 cards as well).
![\frac{1}{4} -- > \frac{13}{52}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B4%7D%20--%20%3E%20%5Cfrac%7B13%7D%7B52%7D)
![\frac{1}{13} -- > \frac{4}{52}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B13%7D%20--%20%3E%20%5Cfrac%7B4%7D%7B52%7D)
Now we can add them together.
![\frac{13}{52} + \frac{4}{52} = \frac{13+4}{52} = \frac{17}{52}](https://tex.z-dn.net/?f=%5Cfrac%7B13%7D%7B52%7D%20%2B%20%5Cfrac%7B4%7D%7B52%7D%20%3D%20%5Cfrac%7B13%2B4%7D%7B52%7D%20%3D%20%5Cfrac%7B17%7D%7B52%7D)
This cannot be simplified further, so the probability is 17 in 52, or 33%.
hope this helps!
Could you please formulate you answer better? So we can get a bette understanding