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lisabon 2012 [21]
3 years ago
8

Elliot wrote a computer program that randomly generates a number from 2 to 10. If he runs the program twice, what is the probabi

lity that the number generated both times is a prime number? StartFraction 2 over 15 EndFraction StartFraction 1 over 6 EndFraction StartFraction 16 over 81 EndFraction StartFraction 9 over 20 EndFraction
Mathematics
2 answers:
Vikentia [17]3 years ago
8 0

Answer:

StartFraction 16 over 81 EndFraction

Step-by-step explanation:

There are 4 prime numbers from 2 to 10 (2, 3, 5, 7) and 9 numbers from 2 - 10. Total possibilities: 9 * 9 = 81

Prime possibilities: 4 * 4 = 16

Therefore the answer is 16/81 or StartFraction 16 over 81 EndFraction

Rus_ich [418]3 years ago
3 0

Answer:

16/81

Step-by-step explanation:

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Mario received 0.40 in change from 20 when he bought tail mix. How many pounds of tail mix did Mario buy?
Katen [24]
So making a simple equation helps to get all the information together

20 - 3.5X = 0.4

20 is the original. Minus the amount you paid for. equals the cash you got back

subtract 20 over

-3.5X=-19.6
Then divide both sides by -3.5
X=5.6

He bought 5.6 pounds 
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3 years ago
Given the recursive formula shown, what are the first 4 terms of the sequence?
Lorico [155]

Answer:

5,20,80,320

Step-by-step explanation:

a1 = 5

an = 4 an-1

Let n = 2

a2 = 4 * a1 = 4*5 = 20

Let n = 3

a3 = 4 * a2 = 4*20 = 80

Let n = 4

a4 = 4 * a3 = 4*80 = 320

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3 years ago
11/n=8/5 solve for n
mezya [45]

Answer:

n = 55/8

Step-by-step explanation:

\frac{11}{n} = \frac{8}{5}\\\\cross \ multiply :\\ 8 \times n = 11 \times 5\\\\n = \frac{11 \times 5}{8} = \frac{55}{8}

6 0
3 years ago
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Nine less than the product of a number n and 1/6 is no more than 92
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7 0
2 years ago
Enter a recursive rule for the geometric sequence. 6, −18, 54, −162, ...
svlad2 [7]

Answer:

The required recursive formula is:

a_n=(-3)\times a_{n-1}

Step-by-step explanation:

We are given a geometric sequence as:

6,-18,54,-162,.....

Clearly after looking at different terms of the sequence we could observe that the sequence is an geometric progression (G.P.) with common ratio= -3 denoted by r.

Let a_n represents the nth term of the sequence.

This means that:

a_1=6, a_2=-18, a_3=54, a_4=-162,......

As the common ratio is -3.

so,

a_1=6\\\\a_2=-18=(-3)\times a_1\\\\a_3=54=(-3)\times a_2\\\\.\\.\\.\\.\\.\\.\\.\\.\\.a_n=(-3)\times a_{n-1}

Hence, the required recursive formula for the geometric sequence is:

a_n=(-3)\times a_{n-1}

5 0
3 years ago
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