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3 years ago

Express 4x-1= 3 as a linear equation in two variables

Mathematics

1 answer:

olga nikolaevna [1]3 years ago

3 0

Hello there!

~I hope you and your family are staying safe and healthy!

$4x - 1 = 3$

We need to start by saying that y = 3

$4x - 1 = y$ or $4x - y = 1$

Thus, the equation above is in the two variable form where y = 3

Thus, the required equation is $4x - y = 1$

Let me know if you have additional questions!

~Garebear

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jarptica [38.1K]

Answer:

Susan B Anthony, Champion of temperance, abolition, the rights of labor, and equal pay for equal work, Susan Brownell Anthony became one of the most visible leaders of the women's suffrage movement. Along with Elizabeth Cady Stanton, she traveled around the country delivering speeches in favor of women's suffrage.

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3 years ago

Does 10p/2q = 5p/q<br> I think it is not equal but it doesn't seem right.

motikmotik

Answer:

Yes, those two are equal.

Step-by-step explanation

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3 years ago

The data given below contain the state cigarette taxâ€‹ (in $) for all 20 regions of a country.

g100num [7]

Answer:

(a) $\bar x= 1.583$ -- Population Mean

(b) $s = 1.032$ --- Population standard deviation

Step-by-step explanation:

Given:

Cigarette tax for 20 regions

Solving (a): The population mean

This is calculated as:

$\bar x = \frac{\sum x}{n}$

$\sum x = 1.36 + 1.70 + 2.50 + 0.45 + 1.18 + 0.64 + 3.46 + 0.57 + 2.00 + 0.80 + 1.60 +0.98 + 0.36 + 2.24 + 4.35 + 0.62 + 2.70 + 1.78 + 1.53 + 0.84$

$\sum x = 31.66$

$n = 20$

So, we have:

$\bar x= \frac{31.66}{20}$

$\bar x= 1.583$

Solving (b): The population standard deviation

This is calculated as:

$s = \sqrt{\frac{\sum( x - \bar x)^2}{n}$

$\sum (x -\bar x)^2 = (1.36 - 1.583)^2 + (1.70 - 1.583)^2+ (2.50 - 1.583)^2+ (0.45 - 1.583)^2+ (1.18 - 1.583)^2+ (0.64 - 1.583)^2+ (3.46 - 1.583)^2+ (0.57 - 1.583)^2+ (2.00 - 1.583)^2+ (0.80 - 1.583)^2+ (1.60 - 1.583)^2+(0.98 - 1.583)^2+ (0.36 - 1.583)^2+ (2.24 - 1.583)^2+ (4.35 - 1.583)^2+ (0.62 - 1.583)^2+ (2.70 - 1.583)^2+ (1.78 - 1.583)^2+ (1.53 - 1.583)^2+ (0.84- 1.583)^2$