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Katyanochek1 [597]
2 years ago
13

If f (x) = -2x what is f (4)

Mathematics
2 answers:
morpeh [17]2 years ago
3 0

Answer:

-8

Step-by-step explanation:

1. f(x)=-2x

2. f(4) = -2(4)

3. f(4) = -8

Hunter-Best [27]2 years ago
3 0

f(4) says "what's the y-value when x=4"?

Substitute 4 for x:

f(4) = -2 (4)

     = -8

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Solve the equation. Check your solutions.<br> |4b+4|=|2b+8|
anzhelika [568]

Answer:

<h2><u>b = 2 or b = -2</u></h2>

Explanation:

|4b + 4| = |2b + 8|

<em>Solve absolute value</em>

|4b + 4| = |2b + 8|

Either 4b + 4 = 2b + 8 or 4b + 4 = −(2b + 8)

4b + 4 = 2b + 8 <em>(Possibility 1)</em>

4b + 4 − 2b = 2b + 8 − 2b <em>(Subtract 2b from both sides)</em>

2b + 4 = 8

2b + 4 − 4 = 8 − 4 <em>(Subtract 4 from both sides)</em>

2b = 4

2b / 2 = 4 / 2 <em>(Divide both sides by 2)</em>

b = 2

4b + 4 = −(2b + 8) <em>(Possibility 2)</em>

4b + 4 = −2b − 8 <em>(Simplify both sides of the equation)</em>

4b + 4 + 2b = −2b − 8 + 2b <em>(Add 2b to both sides)</em>

6b + 4 = −8

6b + 4 − 4 = −8 − 4 <em>(Subtract 4 from both sides)</em>

6b = −12

6b / 6 = -12 / 6 <em>(Divide both sides by 6)</em>

b = -2

<h2><u>b = 2 or b = -2</u></h2>
6 0
2 years ago
Please help me with this!!
Troyanec [42]

Answer:

As the height increases, the temperature decreases.

It is decreasing 5°C per kilometer.

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5 0
3 years ago
What is 2 * 3 ^ 2 - 1​
juin [17]
The answer is 35.
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5 0
3 years ago
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B(n) = -1 (2)^n-1 What is the 5th term in the sequence?
bija089 [108]

Answer:

<h2>The answer is - 16</h2>

Step-by-step explanation:

<h3>b(n) =  - 1 ({2})^{n - 1}</h3>

where

n is the number of terms

From the question since we are finding the 5th term

n = 5

Substitute the value into the above formula and solve

We have

b(5) =  -  1({2})^{5 - 1}  \\  =  - 2 ^{4}

We have the final answer as

<h3>- 16</h3>

Hope this helps you

8 0
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butalik [34]

Answer:

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Step-by-step explanation:

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