For the answer to the question above,
<span>Let x = the length of the first piece </span>
<span>Then 3x = length of the second piece </span>
<span>And 5x + 2 = length of the third piece </span>
<span>Now, add all three of these together and set equal to 47: </span>
<span>x + 3x + (5x + 2) = 47 </span>
<span>Now combine all the like terms and solve for x. Then use that value to find the length of the third piece.</span>
Here we're discussing the "nth partial sum of a geom series."
1 - r^n
The formula for that is s(n) = a(1) ---------------
1-r
We can subst. the given values and see where that takes us:
1 - (-2)^6 1 - 64
105 = a(1)*---------------- = ----------*a(1) = -21*a(1)
1-(-2) 3
105
Solving this for a(1): a(1) = --------- = -5 (answer)
-21
Answer:
Hello! I am also having trouble in algebra! From what I can see so far this is what the problem should look like...
Step-by-step explanation:
A. Yes, it s a linear function because it matches the equation y=mx+b
B. The domain is 1, 2, 3 , 4, and 5. This is because there are 5 services you can choose from. The domain is discrete because you can't have half a service.
C. Because I'm also doing this book (I'm in Algebra 1 in 8th grade), I'm also just learning this! So sorry, but I don't know how to solve this one either... can someone please help?
Thanks! Also, just a tip, if you're having trouble ever again go to slader.com where they have all the answers to any textbook. They also have really good explanations! However, for this one, I didn't understand it on slader so I came on here! Good luck and if anyone can help with C that would be much appreciated.
Answer:
The nonpermissible replacement of the variable n is -4
Step-by-step explanation:
The nonpermissible replacement of the variable in a certain expression is the value of the variable that will make the denominator of the expression zero.
The expression 
has the denominator 
This denominator cannot be equal zero, thus,
.
Answer:
2/15
Step-by-step explanation:
If we have that one third of the students play sports, and two fifth of the students who play sports are girls, to find the fraction of all students that are girls and play sports, we just need to multiply both fractions, because the subset of girls who play sports in relation to the total number of students that play sports is inside the set of total number of students that play sports in relation to the total number of students:
So the fraction of students that are girls who play sports is:
(1/3) * (2/5) = 2/15
