One number is 2 more than 3 times another. their sum is 22. find the numbers. 8, 14

2 answers:

4 0

X + y = 22
x = 3y + 2

3y + 2 + y = 22
4y + 2 = 22
4y = 22 - 2
4y = 20
y = 20/4
y = 5

x = 3y + 2 = 3(5) + 2 = 15 + 2 = 17

ur numbers are 5 and 17

maksim [4K]3 years ago

4 0

Let the number be x.

Hence the other number is 2 + 3*x.

Their sum is 22;

x + 2 + 3x = 22

4x + 2 = 22

4x = 20

Therefore, x = 5

[ 2 + 3x = 2 + 3*5 = 2+15 = 17 ]

Hence the two numbers are, 5 and 17.

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Need help with this problem

Ber [7]

$\frac{2x}{x + 3} - \frac{3}{x - 4}$

The LCM of x+3 and x-4 is x² - x - 12

Working out gives;

$\frac{2x^2 - 8x - 3x - 9}{x^2 - x - 12} = \frac{2x^2 - 11x - 9}{x^2 - x - 12}$

Simplify further using equations calculator to get the answer as attached below:

4 0

3 years ago

Recycled CDs, Incorporated, offers a choice of 5 used CDS for $20, with each additional CD costing $4. Write a cost function for

Dmitry_Shevchenko [17]

The the cost of 13 CDs would be $30.

<h3>How to find the Cost Function?</h3>

A cost function is a function of input prices and output quantity whose value is the cost of making that output given those input prices, often applied through the use of the cost curve by companies to minimize cost and maximize production efficiency.

If $20 represents the cost of the 5 used CDs, than your formula would be "20 + 4x" , with x being the amount of extra CDs you purchase.

The number of CDs minus 5 is our x value, because the first 5 are the used CDs bundled into the $20 group. Thus;

26 + 4(13 - 5)

26 + 4(1)

26 + 4 = $30

Thus, we conclude that the cost of 13 CDs would be $30

Read more about Cost Functions at; brainly.com/question/2292799

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4 0

1 year ago

What’s the answer ? i need to know to pass my AMDM class please !

kirill [66]

Answer:

225/4

Step-by-step explanation:

When you are trying to find the number to be added to a binomial of the form : $x^2+bx$ in order to make it a perfect square trinomial, all you need to do is to use the square of half of the coefficient b. That is : $(\frac{b}{2} )^2$ .