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4 years ago

Simplify (2x+3y)+(7x-3y)

Mathematics

2 answers:

dsp734 years ago

7 0

(2x + 3y) + (7x - 3y)
(2x + 7x) + (3y - 3y)
9x + 0y
9x

Radda [10]4 years ago

3 0

(2x+3y)+(7x-3y) First, group like terms together, so (2x+7x) + (3y-3y). Then simplify within the parentheses. 2x+7x = 9x and 3y-3y = 0, so you have 9x, which cannot be simplified any further. The answer is 9x.

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A 14 gram sample of a substance thats used to sterilize surgical instruments has a k-value of 0.1481. find the substance half-li

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The half life of the substance is $\tau = 4.7 \:days$ .

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$A = A _0 e^{-kt}$ .

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$\dfrac{A_0}{2} = A_0e^{-0.1481\tau }$

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Take the Natural Logarithm of both sides and get:

$ln[e^{-0.1481\tau } ]= ln[\dfrac{1}{2}]$

$-0.1481\tau = ln[\dfrac{1}{2} ]$

$\tau = \dfrac{ln[\dfrac{1}{2} ]}{-0.1481}$

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<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more variables and numbers.

Let x represent the number of individual songs and y represent the number of albums, hence:

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The solution to the inequalities x + 8y ≤ 50, x ≤ 30, y > 2 is the darker region shown on the graph.

Find out more on equation at: brainly.com/question/2972832

#SPJ1

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