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VMariaS [17]
3 years ago
6

A comic costs $3 and a mystery series costs $5 each.If Ken spend all his money on the comics, he has $6 left. If he wants to buy

the mystery series, he needs another $8. How many comics or mystery books is Ken buying? How much money does he have?
Whoever posts this on jiskha gets 50 points
Mathematics
1 answer:
Elza [17]3 years ago
3 0

Answer:

7 books

$27

Step-by-step explanation:

3x + 6= 5x - 8

3x - 5x = -14

-2x= -14

x= 7 books

he has (3×7)+6= $27

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Can anybody help me in this​
Kobotan [32]

Answer:

a) I donot agree with him because as we see the sequence nicely we will find an interval of 8 between any two terms and 32 and 33 don't match them

Step-by-step explanation:

b) and c) Solution:

Given,

First term (a) = 4

Common difference (d) = 12-4 = 8

Now,

Since, they are in A.P.

nth term = a + (n-1)d

              = 4 + 8(n-1)

              = 4 + 8n-8

              = 8n-4

Again,

1st method for c)

100th term = a + 99d = 4 + 99*8 = 4 + 792 = 796

200th term = a + 199d = 4 + 199*8 = 4 + 1592 = 1596

2nd method for c)

100th term = 8*100 - 4 = 800 - 4 = 796

200th term = 8*200 - 4 = 1600 - 4 = 1596

8 0
3 years ago
Find the x ? Help please
Digiron [165]

Answer:

x=23

Step-by-step explanation:

8 0
3 years ago
The lifetime of a battery has the exponential distribution with mean 6.9 months. If it fails, I immediately replace it with anot
irga5000 [103]

Answer:

You should <u>carry 2 other batteries.</u>

Step-by-step explanation:

If the average life of each battery tends to last 6.9 months, and what you need is a year of battery supply, you probably need to carry two batteries.

The battery inside the flashlight has probably already spent much of its half-life.

We are told that the flashlight already has a battery inside, the batteries are discharged inside the flashlight even if the flashlight is not being used.

Which means that the average life of that battery is wearing out.

It would take 2 more batteries in addition to the one already inside the flashlight to supply the need for these for a year.

5 0
3 years ago
Jose spent 20% of his allowance on baseball cards. His allowance is $10. How much did he spend on baseball cards?
JulijaS [17]

Answer:

Jose spent $2 on baseball cards.

4 0
3 years ago
What is the maximum possible value of a sine ratio? In two or more complete sentences, explain your answer.
VMariaS [17]
The sine ratio is basically a fraction of the opposite side over the hypotenuse. Since the hypotenuse is always the longest side, this means the fraction cannot exceed 1. If it did,then that would lead to the opposite side being larger than the hypotenuse but again the hypotenuse is the longest side. The largest the sine ratio can get is 1.
6 0
4 years ago
Read 2 more answers
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