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elixir [45]
3 years ago
8

If x=4 and y=3 what is the value of 5x+2y-6 show how you got the answer.

Mathematics
2 answers:
OLEGan [10]3 years ago
8 0

Answer:

The value of 5x+2y-6 is 20

Step-by-step explanation:

The problem is substitution into equation.

x and y are called unknown variables

Since we have been given values of x and y, we replace them with the values given to solve the expression.

5x means 5 times x

2y means 2 times y

Step 1. Substitute the given values of x and y

When x = 4 and y = 3

5x+2y-6 = 5(4) + 2(3) - 6 = 20 + 6 - 6

= 26 - 6 = 20

Oksana_A [137]3 years ago
7 0

Answer:

<em>Given </em><em>x </em><em>=</em><em> </em><em>4</em><em> </em><em>and </em><em>y </em><em>=</em><em> </em><em>3</em>

Step-by-step explanation:

5x +2y -6 = <em>5</em><em>*</em><em>4</em><em> </em><em>+</em><em> </em><em>2</em><em>*</em><em>3</em><em> </em><em>-</em><em>6</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>=</em><em> </em><em>2</em><em>0</em><em> </em><em>+</em><em> </em><em>6</em><em> </em><em>-</em><em> </em><em>6</em>

<em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>=</em><em> </em><em>2</em><em>0</em>

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!!!!!!!!!!!!!!!!!!!!
Andru [333]

Answer:

f^{-1}(x)=4x+20

Step-by-step explanation:

<u>Given</u>

<u />f(x)=\frac{x}{4}-5\\ \\y=\frac{x}{4}-5

<u>Swap x and y and solve for y</u>

<u />y=\frac{x}{4}-5\\ \\x=\frac{y}{4}-5\\ \\x+5=\frac{y}{4}\\ \\4(x+5)=y\\\\y=4x+20

<u>Final answer</u>

<u />f^{-1}(x)=4x+20

Keep in mind that we need to swap the variables because a function and its inverse are symmetrical about the line y=x. See the graph below.

3 0
2 years ago
Brianna earned $28,000 last year. If the first $20,000 is taxed at 10% and income above that is taxed at 13%, how much does Bria
DiKsa [7]

Answer:

3,040$

Step-by-step explanation:

20k*.1=2,000

8k*.13=1,040

2,000+1,040=3,040

I am so sorry if I'm wrong.

4 0
3 years ago
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kicyunya [14]
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The equation would be
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3 years ago
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Profit (P) is calculated by subtracting the total cost (C) from the total revenue (R). The calculations are shown below, 

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Thus, the businessman's profit is $720. 

7 0
3 years ago
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hodyreva [135]
0 is the answer for the wuedtion
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