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3 years ago

Mr Tom shared $300 between his two sons aged 15 years and 10 years in

Mathematics

1 answer:

Sonbull [250]3 years ago

3 0

Answer:

Son of 15 years $180

Son of 10 years $120

Step-by-step explanation:

15 + 10 = 25

25 300

15 x = 300*15/25

x = 180

25 300

10 x = 300*10/25

x = 120

Son of 15 years $180

Son of 10 years $120

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Step-by-step explanation:

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2 years ago

The graph shows the volume of the ice cubes versus temperatures in degrees Celsius. Which statement is false

muminat

The false statement include:

Volume is explanatory variables.

Data shows a positive linear relationship.

<h3>What is a Positive linear relationship?</h3>

This relationship between two variables involves them having a positive slope. This means that as volume increases, temperature also increases which isn't the case.

This cause and effect pattern also means that the volume doesn't have explanatory variables.

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2 years ago

The level of nitrogen oxides (NOX) in the exhaust after 50,000 miles or fewer of driving of cars of a particular model varies No

Greeley [361]

Answer:

For a level of 0.0174 or more of nitrogen oxide, the probability of fleet is 0.01.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 0.02 g/mi

Standard Deviation, σ = 0.01 g/mi

Sample size, n = 81

We are given that the distribution of level of nitrogen oxides is a bell shaped distribution that is a normal distribution.

Standard error due to sampling:

$=\dfrac{\sigma}{\sqrt{n}} = \dfrac{0.01}{\sqrt{81}} = 0.0011$

Formula:

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

We have to find the value of x such that the probability is 0.01

P(X > x)

$P( X > x) = P( z > \displaystyle\frac{x - 0.02}{0.0011})=0.01$

$= 1 -P( z \leq \displaystyle\frac{x - 0.02}{0.0011})=0.01$

$=P( z \leq \displaystyle\frac{x - 0.02}{0.0011})=0.99$

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

$\displaystyle\frac{x - 0.02}{0.0011} = -2.326\\\\x = 0.0174$

For a level of 0.0174 or more of nitrogen oxide, the probability of fleet is 0.01.

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3 years ago

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3 years ago

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Rus_ich [418]

Remember that in PEMDAS, you do the parentheses first.

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3 years ago

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