Answer:
26
Step-by-step explanation:
in a deck of 52 cards there are 52/2 = 26 black cards
so there are 26 ways you can select a black card
First lets start with number six. The only way to solve this is if you determine what "a" and "b" are using the first log they have given to you.
The first variable that I solved for was "a" and
}
The same is also true for "b", but when you put both "a" and "b" together the only combination that I have found to work is 
Next you plug these numbers in for "a" and "b" on the second equation to get something that looks like this:
and the picture below shows where the answer becomes a negative fraction.
https://www.symbolab.com/solver/logarithms-calculator/%20%5Clog_%7B%5Cfrac%7B1%7D%7B2%7D%5Ccdot%5Cfrac%7B1%7D%7B4%7D%7D%5Cleft(%5Cfrac%7B%5Csqrt%7B%5Cfrac%7B1%7D%7B2%7D%7D%7D%7B%5Csqrt%5B3%5D%7B%5Cfrac%7B1%7D%7B4%7D%7D%7D%5Cright)
If you paste that link in your search bar it will give you a even more in depth understanding of how to get this answer
Next is #7, the easier of the two.There are two ways to solve for your answers. According to the graph of this equation there are four possible real solutions.
. (This does not account for any complex solutions)
Notice that the bases are conjugates which is why the answers are so "nice"
The key is in the exponents
if
then the sum on the conjugates will be 10 so


so 
Now for the other two
the solution is also true if 
so

the four real solutions are 
Answer:
42 is the answer to life, the universe, and the amount of pizza i need. The 0 is the amount of braincells i have and the 6 is because I have 6 working teeth. The 9 is because it is almost 10
i hope this helped hehe
Step-by-step explanation:
well its all up there i legit have no brain cells
Answer:
9.6 seconds
Step-by-step explanation:
The equation for projectile motion in feet is
where
is the initial velocity in ft/s and
is the initial height in feet.
We are given that the initial upward velocity is
and the initial height is
. Thus, plugging these values into our equation, we get
as our equation for the situation.
The firework will land, assuming it doesn't explode, when
, thus:

Since time can't be negative, then the firework will land after 9.6 seconds, assuming it doesn't explode at the time of landing.
A direct variation is a linear equation. It describes a simple relationship between two variables.
Example: if y varies directly as x, and y = 6 when x = 2, the constant of variation is k = = 3.
Hope this helped!! :)