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marishachu [46]
3 years ago
14

Three times a number, x, increased by four is equal to five times the number, x. Which equation can be used to solve for x?

Mathematics
2 answers:
sesenic [268]3 years ago
5 0

Answer:

X = 2

Step-by-step explanation:

From the question we can gather some pretty important information. For starters, "three <u>times</u> a number x" would give us 3x. Secondly, "<u>increased</u> by 4" would give us +4. Lastly, "<u>equal</u> to five <u>times</u> x" would be = 5x. If we put this all together we have the following Algebraic Equation.

3x+4 = 5x

Now we can start solving the equation.

3x+4 = 5x

4 = 2x

2 = x

So we can see that the value of x in this equation is 2.

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

Dimas [21]3 years ago
4 0
3x+4=5x
4=5x-3x
4=2x
X=2
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Answer:

\frac{dy}{dt}=\frac{6y}{x}\text{ ft per sec}

Step-by-step explanation:

Let L be the length of the ladder,

Given,

x = the distance from the base of the ladder to the wall, and t be time.

y = distance from the base of the ladder to the wall,

So, by the Pythagoras theorem,

L^2 = y^2 + x^2

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Differentiating with respect to time (t),

\frac{dL}{dt}=\frac{d}{dt}(\sqrt{x^2 + y^2})

=\frac{1}{2\sqrt{x^2 + y^2}}\frac{d}{dt}(x^2 + y^2)

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=\frac{1}{\sqrt{x^2 +y^2}}(x\frac{dx}{dt}+y\frac{dy}{dt})

Here,

\frac{dy}{dt}=-6\text{ ft per sec}

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Which is the required notation.

8 0
3 years ago
Pre-Calc :
nikitadnepr [17]
The answer is 
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4x+30=2(x-10)
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Mark as brainliest if you find it helpful.

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3 years ago
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Cloud [144]
Simplify both sides if needed. The left-hand side needs simplification.

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