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3 years ago

Giving 10 points to anyone who answers these

Mathematics

1 answer:

sineoko [7]3 years ago

7 0

I'm not sure about the first question.
Did you post the question correctly?

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What fraction of an hour is three minutes

lions [1.4K]

Answer:

3/60=1/20

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Real World Example Functions.

umka2103 [35]

Answer:

Smart phone sales since 1990:- linear function

Half life of a pesticide :- exponential function

Step-by-step explanation:

Linear function can be applicable in almost any situation where there is an unknown quantity can be represented by a linear equation, like figuring out income over time, calculating mileage rates, or predicting profit, therefore smart phone sales since 1990 can be model with linear function

Exponential functions can be applicable in social, scientific, or personal finance situations such as population growth, radioactive decay and half life, therefore half life of pesticide can be model with exponential function.

6 0

3 years ago

The distance between major cracks in a highway follows an exponential distribution with a mean of 5 miles. (a) What is the proba

Nonamiya [84]

Answer:

$P(Y=0) = 0.1353$

Step-by-step explanation:

From the question we are told that:

Exponential distribution mean $\=x = 5 miles$

Distance $d=10miles$

Generally the equation for Exponential distribution is mathematically given by

$\lambda=\frac{1}{E(X)}$

$\lambda=\frac{1}{5}$

Therefore

Possion Y

$10\lambda=10*(1/5)$

$10\lambda=2$

Generally the equation for The probability that there are no major cracks in a 10 mile stretch of the highway is mathematically given by

$P(Y=0) = \frac{e-2 (2)0}{0!}$

$P(Y=0) = e-2$

$P(Y=0) = 0.1353$

7 0

3 years ago

Write an equation in slope-intercept form for the line parallel to y= 9x+2 that passes through the point (-2,8). Show your work.

Ymorist [56]

Answer: y=9x + 26

Step-by-step explanation:

Notice that for two lines to be parallel they must have the same slopes but different y intercept.

So the equation y =9x + 2 has a slope of 9 and y-intercept of 2 so using the points we can determine the y intercept of the line parallel to it to find the.

Using the slope intercept form formula which is y = mx + b we can plot in the slope and the given coordinates to solve for b.

The coordinate is (-2,8) which the y value is 8 and the x value is -2

so 8 = 9(-2) +b solve for b

8 = -18 + b

+18 +18

b = 26

The y intercept is 26 so the equation will be y=9x + 26

4 0

3 years ago

If y(x) = 3(x+5) +4/x, what is f(a+ 2)?

Lerok [7]

Answer:

Step-by-step explanation:

Theyre basically telling you that x = (a + 2)

All you have to do is replace x with a + 2

$f(a+2)=3(a+2+5)+\frac{4}{a+2}$

Next you have to simplify, 2+5 = 7 to get 3(a+7). Apply the distributive property to get 3a + 21. Your new equation is now:

$f(a+2)=(3a+21)+\frac{4}{a+2}$

Now here's the issue, you cant add those two terms yet because we need a common denominator. Multiply the numerator and denominator of 3a + 21 by a+2 to get:

$=\frac{(a+2)(3a+21)}{a+2} +\frac{4}{a+2}$

You gotta now apply FOIL to get:

$\frac{3a^2+27a+42}{a+2} +\frac{4}{a+2} = \frac{3a^2+27a+46}{a+2}$

There is your answer

6 0

3 years ago