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3 years ago

How do you know if a function is increasing or decreasing?

Mathematics

1 answer:

Stolb23 [73]3 years ago

5 0

It would point up if increasing, pointing down if it’s decreasing. I’m not entirely sure

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sashaice [31]

Answer:

hewo

Step-by-step explanation:

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3 years ago

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Write an algebraic equation for each question below and then solve the equation.

Aneli [31]

Answer:

$number = x \\ number \: decreaed \: by \: 8 = > x - 8 = 26 \\ x - 8 = 26 \\ x = 8 + 26 \\ x = 34 \\ thank \: you$

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3 years ago

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Assume the time required to complete a product is normally distributed with a mean 3.2 hours and standard deviation .4 hours. Ho

Alex787 [66]

Answer: 3.712 hours or more

Step-by-step explanation:

Let X be the random variable that denotes the time required to complete a product.

X is normally distributed.

$X\sim N(\mu=3.2\text{ hours},\ \sigma=0.4\text{ hours} )$

Let x be the times it takes to complete a random unit in order to be in the top 10% (right tail) of the time distribution.

Then, $P(\dfrac{X-\mu}{\sigma}>\dfrac{x-\mu}{\sigma})=0.10$

$P(z>\dfrac{x-3.2}{\sigma})=0.10\ \ \ [z=\dfrac{x-\mu}{\sigma}]$

As, $P(z>1.28)=0.10$ [By z-table]

Then,

$\dfrac{x-3.2}{0.4}=1.28\\\\\Rightarrow\ x=0.4\times1.28+3.2\\\\\Rightarrow\ x=3.712$

So, it will take 3.712 hours or more to complete a random unit in order to be in the top 10% (right tail) of the time distribution.

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4 years ago

Plastic cups come in packages of 24 and straws come in packages of 20, whats the smallest number of each that could be bought so

Aleks04 [339]

Answer:

120

Step-by-step explanation:

No. of plastic cups = 24

No. of straws =20

We need to find the smallest number of each that could be bought so that you had the same amount of cups and straws.

Prime factrisation of 24 = 2×3×2×2

Prime factorisation of 20 = 2×5×2

LCM = 120

Hence, the smallest number of each type will be 120.

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3 years ago

Charlie walk 9 blocks to school after school he walked 3 blocks to soccer practice he walks 7 blocks back home how many total bl

Dovator [93]

9 + 3 +7 =19 blocks each day

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4 years ago

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