3 years ago

Three less than a number n is -16

Mathematics

1 answer:

Dafna11 [192]3 years ago

7 0

Answer:

-13

Step-by-step explanation:

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A local company manufactures netbook computers. Their profit function is given by this equation: y equal minus x to the power of

Westkost [7]

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The equation described above can also be written as, y = -x² + 100x + 4000To get the number of notebooks that will give them the maximum profit, we derive the equation and equate to zero. dy/dx = -2x + 100 = 0The value of x from the equation is 50. Then, we substitute 50 to the original equation to get the profit. y = -(50^2) + 100(50) + 4000 = 6500Thus, the maximum profit that the company makes is $6,500/day.
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3 years ago

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The weight of strawberries follows a normal distribution with a mean weight of 12 grams and a standard deviation of 2.5 grams. I

Viefleur [7K]

This is a problem of Standard Normal distribution.

We have mean= 12 grams
Standard Deviation = 2.5 grams

First we convert 8.5 to z score. 8.5 converted to z score for given mean and standard deviation will be:

$z= \frac{8.5-12}{2.5} =-1.4$

So, from standard normal table we need to find the probability of z score to be less than -1.4. The probability comes out to be 0.0808

Thus, the <span>probability that the strawberry weighs less than 8.5 grams is 0.0808</span>

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3 years ago

Area of a square with side length of 4inches

malfutka [58]

Answer:

16 $in^{2}$

Step-by-step explanation:

multiply 4 by 4

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3 years ago

Twenty percent of a radioactive substance decays in ten years by what percent does the substance decay each year

kifflom [539]

Answer:

Step-by-step explanation:

20% takes 10 years to decay

To find per year decay, we divide the percentage by the number of years, so we get unit rate of years {per year]. Thus we have:

20%/10 = 2% per year

It's that simple.

Hence, the percentage by which the substance decays each year is 2%

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Fifteen students taking a test the state assessment exam forgot their calculator. of the 250 students taking the exam, what perc

inna [77]

Answer:

Step-by-step explanation:

The percentage is the ratio 15/250 converted to a percent. That conversion can be accomplished by multiplying the ratio by 100%. (You can do this without a calculator.)

15/250 × 100% = (1500/250)% = 6%

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3 years ago