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Paraphin [41]
3 years ago
5

How do you determine which variable to substitute in for?

Mathematics
1 answer:
stira [4]3 years ago
7 0

Answer:

Substituting for a Variable

If you know the value that the variable is equal to, you can substitute that value in for the variable in the expression! Let's look at an example. Since we know that x=5, we can directly substitute or replace the x in the expression x+3 with a 5 to solve for y!

Step-by-step explanation:

I hope this kinda helps

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State of the given functions are inverses. Part 3. NO LINKS!!!!​
Effectus [21]

Answer:

9.

h(x)=-x-1

let y =-x-1

interchanging role of x & y

x=-y-1

y=-x-1

h-¹(x)=-x-1

again

f(x)=(2-3x)/2

let

y=(2-3x)/2

interchanging role of x & y

x=(2-3y)/2

2x-2=-3y

y=(2-2x)/3

f-¹(x)=(2-2x)/3

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10.

f(x)=-x+3

let y=-x+3

interchanging role of x & y

x=-y+3

y=3-x

f-¹(x)=-x+3

equal to g(x)=-x+3

<u>Given function are</u><u> inverse of each other.</u>

8 0
2 years ago
Read 2 more answers
Help plz<br> 40x + 100 &gt;500
serg [7]

Answer:

x > 10

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

8 0
2 years ago
which description best describes the solution to the following system of equations y= -2x +3 y= -x + 1
marin [14]
For this case we have the following system of equations:
 y = -2x +3&#10;&#10;y = -x + 1
 Equating the values of y we have:
 -2x +3 = -x + 1&#10;
 From here, we can clear the value of x.
 We have then:
 -2x + x = 1 - 3&#10;&#10;-x = -2&#10;&#10;x = 2
 Then, we look for the value of y.
 For this, we substitute x in any of the equations:
 y = -x + 1&#10;&#10;y = -2 + 1&#10;&#10;y = -1
 Answer:
 
The ordered pair solution of the system of equations, is given by:
 
(x, y) = (2, -1)
3 0
2 years ago
Read 2 more answers
Two-fifths of one less than a number is less than three-fifths of one more than that number. What numbers are in the solution se
yaroslaw [1]
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2/5 * n - 2/5 < 3/5 * n + 3/5
- 2/5 - 3/5 < 3/5 * n - 2/5 * n
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- 1 < 1/5 * n      /*5
- 5 < n
n > - 5

n = x

The correct result would be B) <span>x > - 5.</span>
7 0
3 years ago
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Do u simplify 7 wholes and 8/10
SSSSS [86.1K]

Answer: Simplify 8/10 which is 4/5.

Step-by-step explanation:

7 0
3 years ago
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