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Evgen [1.6K]
2 years ago
7

HELP i need it i will give brainly

Mathematics
2 answers:
sergiy2304 [10]2 years ago
6 0

Answer:

2/3^15

Step-by-step explanation:

9^-8 * 3/2^-1

= 3^-16 * 3/2^-1

= 3^-15/2^-1

= 1/2^-1 * 3^15

= 2/3^15

iogann1982 [59]2 years ago
5 0

Answer:

2/9^8

Step-by-step explanation:

3^0 = 1 so it turns into 9^-8/ 2^-1

Then put 9^-8 on the bottom to make it positive

Now its 1/9^8 & 2^-1

Then put 2 on top to make it positive and 2^1 is just 2

So now you have 2/9^8

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natka813 [3]

Answer:

simplify -1(3/5)÷(-2/3) = 9/10

=90/100

= .90 and there's your answer

5 0
3 years ago
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That is going to be false
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(b) A department store has 7,000 charge accounts. The comptroller takes a random sample of 36 of
galben [10]

Answer:

a.0.8664

b. 0.23753

c. 0.15866

Step-by-step explanation:

The comptroller takes a random sample of 36 of the account balances and calculates the standard deviation to be N42.00. If the actual mean (1) of the account balances is N175.00, what is the probability that the sample mean would be between

a. N164.50 and N185.50?

b. greater than N180.00?

c. less than N168.00?

We solve the above question using z score formula

z = (x-μ)/σ/√n where

x is the raw score,

μ is the population mean = N175

σ is the population standard deviation = N42

n is random number of sample = 36

a. Between N164.50 and N185.50?

For x = N 164.50

z = 164.50 - 175/42 /√36

z = -1.5

Probability value from Z-Table:

P(x = 164.50) = 0.066807

For x = N185.50

z = 185.50 - 175/42 /√36

z =1.5

Probability value from Z-Table:

P(x=185.50) = 0.93319

Hence:

P(x = 185.50) - P(x =164.50)

= 0.93319 - 0.066807

= 0.866383

Approximately = 0.8664

b. greater than N180.00?

x > N 180

Hence:

z = 180 - 175/42 /√36

z = 5/42/6

z = 5/7

= 0.71429

Probability value from Z-Table:

P(x<180) = 0.76247

P(x>180) = 1 - P(x<180) = 0.23753

c. less than N168.00?

x < N168.

z = 168 - 175/42 /√36

z = -7/42/6

z = -7/7

z = -1

Probability value from Z-Table:

P(x<168) = 0.15866

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3 years ago
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Samaria has 6 more than three times as many pieces of candy as Sydney. Samaria has 36 pieces of candy. How many does Sydney have
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