Answer:
-5
Step-by-step explanation:
Multiply 2 · 2 = 4
Subtract 4 - 7 = 3
Add 3 + 17 = 20
Multiply 2 · 5 = 10
Add -14 + 10 = -4
Divide 20 ÷ 4 = -5
;-;
Let's just do a bunch of math below.
7.8 X 103 ?
-------------- = ------
1.2 X 104 ?
So, first, we're gonna do 7.8 multiplied by 103 to get 803.4.
Thus....
7.8 X 103 803.4
-------------- = -----------
1.2 X 104 ?
Then we would do 1.2 multipied with 104 to get a product of 124.8.
Therefore....
7.8 X 103 803.4
-------------- = -----------
1.2 X 104 124.8
Dividing 803.4 by 124.8 would get you a quotient of 6.4375.
Your answer is 6.3475.~
Have a nice day~
If there are 13 letters typed, the probability that no letters will be repeated can be found to be 1.05 x 10⁻²⁰
<h3>How to find the probability no letters are repeated?</h3>
First, find the number of possibilities of 13 letters from 26 letters in the alphabet as:
= 26 x 26 x 26 x 26 x 26 x 26 x 26 x 26 x 26 x 26 x 26 x 26 x 26
= 6.156 x 10³⁶ possibilities
If the numbers are not to be repeated then the possibilities are:
= 26 x 25 x 24 x 23 x 22 x 21 x 20 x 19 x 18 x 17 x 16 x 15 x 14
= 64764752532480000 possibilities
The probability that no letters are repeated is:
= 64764752532480000 / 6.156 x 10³⁶
= 0.0000000000000000000105
= 1.05 x 10⁻²⁰
Find out more on probability at brainly.com/question/8994028
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Answer: 5 + 5w
Step-by-step explanation:
We can use the variable <em>x </em>to describe each additional hour, although the vairable can be substituted for any other vairable.
We know that the main cost for one hour is $5, and that each additional hour will cost $5.
Therefore, the equation to reflect this situation would be 5 + 5w, because the first 5 represents the first hour, and the 5w represents how much each hour costs. If you rent two extra hours, then the cost would end up being 15, because the equation would become: 5 + (5x2) = 15.
The equation is 5 + 5w. Hope this helps, and good luck!
