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Alenkinab [10]
3 years ago
9

Evaluate f(x) = 1/4 x for x =-5.

Mathematics
2 answers:
Marianna [84]3 years ago
7 0

Answer:

f(x) = -1.25

Step-by-step explanation:

Substitute x with -5, so our equation would look this:

<em>Note: We were already given the value of x</em>

f(x) = 1/4(-5)

Multiply 1/4 and -5:

1/4 * -5 = -1.25

So, our answer would be -1.25

tester [92]3 years ago
4 0
<h3>Answer:</h3>

-1.25

<h3>Step-by-step explanation:</h3>

In order to find the answer to your question, we're going to need to plug in a number to the variable x.

We know that x = -5

This means that whenever you see x, you would replace it with what it equals to. In this case, we would plug in -5 to x, since that's what it equals to.

Your equation would look like this:

\frac{1}{4}( -5)

Now, you would solve to get your answer.

\frac{1}{4} (-5)=-1.25\\\\\text{1/4 is the same as 0.25} \\\\0.25(-5)=-1.25

Once you're done solving, you should get -1.25

This means that f(x) = -1.25

<h3>I hope this helps you out.</h3><h3>Good luck on your academics.</h3><h3>Have a fantastic day!</h3>
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The ordered pairs model an exponential function, where j is the function name and e is the input variable.
yKpoI14uk [10]

Answer:

2(5^e)

Step-by-step explanation:

the answer is 2(5^e)

because  

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2(5^2)=50

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3 years ago
Hey, Y'all. Was wonderin' bout this pesky question that got me a bit stumped. Thank ya for your help.
puteri [66]
Answer: Choice B) (24,10)

---------------------------------------------------------

Work Shown:

2x - 4y = 8
2( x ) - 4y = 8
2( 3y-6 ) - 4y = 8 ... notice x has been replaced with 3y-6
2(3y)+2(-6) - 4y = 8
6y-12 - 4y = 8
2y-12 = 8
2y-12+12 = 8+12 ... add 12 to both sides
2y = 20
2y/2 = 20/2 ... divide both sides by 2
y = 10

If y = 10, then
x = 3y-6
x = 3*10-6 ... replace y with 10
x = 30-6
x = 24

Put together, the solution is (x,y) = (24,10)
which is why the answer is choice B

As a check, we can plug (x,y) = (24,10) into each equation
x = 3y-6
24 = 3*10 - 6
24 = 30 - 6
24 = 24 ... true equation
and similarly for the second equation as well
2x-4y = 8
2*24 - 4*10 = 8
48 - 40 = 8
8 = 8 ... true equation
Both equations are true when (x,y) = (24,10) so the solution is confirmed
4 0
3 years ago
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Brrunno [24]

Answer:

.. .. .. .. .. .... . ..

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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