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tekilochka [14]
3 years ago
8

When x=1/2, what is the value of 8x-3/x

Mathematics
1 answer:
Viefleur [7K]3 years ago
6 0
8x - 3/x

x = 1/2

(8 • 1/2) - 3/0.5

4 - 1.5

2.5
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In an arithmetic sequence, = 5 and = 11.
Free_Kalibri [48]

Answer:

1134.62 (THE SUM OF 20 TERMS)

Step-by-step explanation:

First we write out our given information:

a8=2a2

a11=18

an is an arithmetic sequence.

Where here an means the nth term of our sequence.

What does an arithmetic sequence mean? It means to get to the next term in your sequence you add a constant (c) each time:

an+1=an+c

Equivalently:

an+1−an(n+1)−n=c

So an is of slope c (c2 is another constant):

an=cn+c2

Where here c2=a0 (Substitute in n=0 and see why that has to be the case if we let a0 exist)

Now we use the other given information to try to come up with a solution.

Let n=2:

a2=2c+c2

Let n=8, using the above equation we have:

a8=8c+c2=2a2=4c+2c2

Let n=11

a11=18

a11=11c+c2

But a11−a8=(11c+c2)−(8c+c2)=3c

Hence, a11=3c+a8

a11=3c+4c+2c2=18

a11=3c+8c+c2=18

5 0
2 years ago
3 questions
frutty [35]
1) add 7 to both sides and get -5....so -5 >x
2) add 7 to both sides.....so get b<-5
3) add 17 to both side...so get z>1
6 0
3 years ago
Read 2 more answers
Find the midpoint of the segment joining X(6,5) and Y(9,2). I'm lost geomerty ​
olasank [31]

Answer:

Is there a graph?

Step-by-step explanation:

3 0
3 years ago
Mr. and Mrs. Lorenzo want to buy a home valued at $213,500. If they have 18% of this amount saved for a down payment, how much h
romanna [79]
It would be: 213500 * 18/100
213500 * 0.18 = $38430

So, option D is your answer.

Hope this helps!
5 0
3 years ago
A stack of 5 books welghs 9.5 pounds. If each book weighs the same amount, how much does each book weigh?​
Dafna11 [192]
9.5/5 = 1.9 lbs each
6 0
3 years ago
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