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Setler79 [48]
3 years ago
11

The sale price of a rucksack is £12, its normal price is £32. Write the ratio of the sale price to the normal price in its simpl

est form.
Mathematics
1 answer:
ozzi3 years ago
8 0
What is the highest common factor of 12 and 32?
It is 4, so we divide both numbers by 4.
This gives us 3 : 8. This cannot be simplified further, therefore it is the simplest form.
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Every hour of training raises the salary
timurjin [86]
(10,1250),(20,1400)
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7 0
3 years ago
Assume that IQ scores are normally distributed with a mean of 100 and a standard deviation of 16. If 100 people are randomly sel
laiz [17]

Answer:

0.03 is  the probability that for the sample mean IQ score is greater than 103.      

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 100

Standard Deviation, σ = 16

Sample size, n = 100

We are given that the distribution of IQ score is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

Standard error due to sampling =

\dfrac{\sigma}{\sqrt{n}} = \dfrac{16}{\sqrt{100}} = 1.6

P( mean IQ score is greater than 103)

P(x > 103)

P( x > 103) = P( z > \displaystyle\frac{103 - 100}{1.6}) = P(z > 1.875)

= 1 - P(z \leq 1.875)

Calculation the value from standard normal z table, we have,  

P(x > 103) = 1 - 0.970 =0.03= 3\%

0.03 is  the probability that for the sample mean IQ score is greater than 103.

7 0
2 years ago
Yall please help me im struggling and i need to pass!!​
vesna_86 [32]

Answer: it is c

Step-by-step explanation:

if it is leaking 3/4 in 1/2 h than it will leak 6/4 in one whole hour

3 0
2 years ago
Read 2 more answers
If A=4x²+7x-1 and B= -x²-5x+3, then what is 3/2A-2B?
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Answer:

D) it the only one that satisfies the relation for both x = 0 and x = 1

Step-by-step explanation:

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Answer:

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2 years ago
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