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3 years ago

3x(2x-7y)-8x(x+2y)+2y(4x-y)

Mathematics

2 answers:

pickupchik [31]3 years ago

6 0

Answer: you're correct.

Brainliest or a thank you please :)) <3

dusya [7]3 years ago

3 0

Answer:

It is -2 x^2 -13xy- 16ux - 2y^2

Step-by-step explanation:

Hope this helps :)

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Which function can represent the height, y, of the railing in inches according to the horizontal distance in inches, x, from the

hodyreva [135]

The function representing the height is y = 36 - $\frac{3}{4} x$ .

<h3>What is function?</h3>

A formula, rule, or legislation that specifies how one variable (the independent variable) and another variable are related (the dependent variable). In mathematics, functions exist everywhere, and they are crucial for constructing physical links in the sciences.

<h3>What is fraction?</h3>

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Given that,

Height of rails h is 36in.

The rate of decrement is 9 inches for every 12 horizontal inches,

We represent the rate (r) as a fraction.

r = $-\frac{9}{12}$ (negative, because it decreases),

r = $-\frac{3}{4}$ ,

So, the function is

Y = h + r × x

Where,

X is distance from top

So, y = 36 $-\frac{3}{4}x$

To know more about function, visit:

brainly.com/question/14418346

#SPJ4

4 0

1 year ago

Josh travels frequently. For a particular airline, it takes 20 minutes for the first bag to arrive in baggage claim after a flig

Orlov [11]

Using the uniform distribution, it is found that:

A,B) 0.3 of the time does it take longer than 27 minutes for Josh’s bag to arrive in baggage claim.

C) 20% of the time does Josh’s bag arrive in less than 22 minutes.

--------------------------

An uniform distribution has two bounds, a and b.

The probability of finding a value of at lower than x is:

$P(X < x) = \frac{x - a}{b - a}$

The probability of finding a value between c and d is:

$P(c \leq X \leq d) = \frac{d - c}{b - a}$

The probability of finding a value above x is:

$P(X > x) = \frac{b - x}{b - a}$

--------------------------

In the graph, we have that the distribution is uniform between 20 and 30 minutes, thus $a = 20, b = 30$

--------------------------

Itens a and b:

Above 27 minutes, thus:

$P(X > 27) = \frac{30 - 27}{30 - 20} = 0.3$

0.3 of the time does it take longer than 27 minutes for Josh’s bag to arrive in baggage claim.

--------------------------

Item c:

Less than 22 minutes, thus:

$P(X < 2) = \frac{22 - 20}{30 - 20} = 0.2$

0.2*100 = 20%

20% of the time does Josh’s bag arrive in less than 22 minutes.

A similar problem is given at brainly.com/question/15855314

6 0

3 years ago

Brainlist if you get it right

denpristay [2]

Experimental probability: 10/50

Percentage: 20%

I dont know for sure sorry if it is wrong

8 0

3 years ago

Solve the formula V = pi r2h for r

Andrei [34K]

Answer:

$V=\pi \times r^{2}\times h\\\\\Longrightarrow V=r^{2}\times \left( \pi \times h\right) \\\\\Longrightarrow r^{2}=\frac{V}{\pi \times h} \\\\\Longrightarrow r=\sqrt{\frac{V}{\pi \times h} }$

6 0

2 years ago

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Help please and thankyou <3

Serjik [45]

The answer is D, because -2/3/2 = -4/3.

8 0

4 years ago

Read 2 more answers