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LekaFEV [45]
2 years ago
13

Can you solve this for me

Mathematics
1 answer:
jenyasd209 [6]2 years ago
4 0

The number in the blank box should be 44 because it said that "3 times x and 4 times y is 44".

You need to multiply the first equation by 3:

3x + 3y = 39.

Then, subtract the first equation from the second equation:

3x - 3x = 0

4y - 3y = y

44 - 39 = 5

Your new equation should look like this: y = 5

Now, substitute y = 5 into the first original equation:

x + 5 = 13

x = 8

Ans. (x, y) = (8, 5)

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The two point formula :

y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)

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The balance was $4400.25 before 4 years.

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

An equation is a mathematical statement formed when two expressions are equated using an equal sign.

The equations are useful in the determination of unknown parameters.

The equations are of various types, such as Trigonometric equations, and quadratic equations.

The balance of an investment account is $308.32

Let the balance 4 years ago was $x

Then the balance today is represented by x + 308.32

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The expressions can be equated to get the value of the balance 4 years ago.

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x = 4708.57 - 308.32

x = $4400.25

The balance 4 years ago was $4400.25

To know more about Equation

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