Is 4x+2y=9 a linear equation

Mathematics

1 answer:

ExtremeBDS [4]3 years ago

3 0

Yes it is a linear equation

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What is the value of x in the equation x – y = 30, when y = 15?

lord [1]

(2/3)(30)=20
30+20=50=(x/5)
(50*5)=x=250

hope this helps

5 0

4 years ago

Read 2 more answers

Imagine that you are planning to estimate the price of the average book at your college bookstore. The bookstore carries 13,000

mafiozo [28]

Answer: "13,000 books" represents the population.

"200" books represents the sample.

Step-by-step explanation:

A population is the term that denotes a whole large possible group of individuals, objects, events or measurements.
A subset of population is known as ample.
When population is too large to the researcher , then it uses sample to represent the entire population.

Here, "13,000 books" represents the population.

"200" books represents the sample which is a subset of 13,000 books.

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3 years ago

Set up the integral that uses the method of disks/washers to find the volume V of the solid obtained by rotating the region boun

Blababa [14]

Answer:

$a)\: \frac{3}{2} \pi$

$b) \:\frac{47}{5} \pi$

Step-by-step explanation:

$y=3\sqrt x,\:\:y=3,\:\:x=0$

a) about the line y = 3

$3\sqrt x=3$ ⇒ $x = 1$ is the intersection point

So,

$V=\int\limits^1_0\pi(3-3\sqrt x)^2\:dx=\pi\int\limits^1_0(9-18\sqrt x+9x)\:dx=\\\\=\pi(9x-12x^{3/2}+9/2x^2)|^1_0=\pi(9-12+9/2)=\frac{3}{2} \pi$

b) about the line x = 5

$y=3\sqrt x$ ⇒ $x=y^2/9$

So,

$V = \int\limits^3_0\pi([5-0]^2-[5-y^2/9]^2)\:dy=\pi\int\limits^3_0(25-25+10y^2/9-y^4/81)\:dy=\\\\=\pi(10y^3/27-y^5/405)|^3_0=\pi(10-3/5)=\frac{47}{5} \pi$