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Alenkinab [10]
2 years ago
5

Given f(x)=-2x-1, solve for x when f(x)=-7

Mathematics
1 answer:
Svetlanka [38]2 years ago
5 0

Answer:

The answer is -15.

Step-by-step explanation:

1. 2x - 1

2. 2(-7) - 1

3. (-14) - 1

4. -15

By plugging in our x value, we are able to use PEMDAS to  multiply 2 and the value of x and then, we subtract 1 from the value we got from step 3 to get -15.

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Sphinxa [80]
The best estimate of r is 0.
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3 0
3 years ago
Write 1.14 × 10 to the third power in standard notation
Inessa [10]

Since it's 10^3, move the decimal over 3 places to the right. When you do that the answer should now be 1,140.


Hope this helps!

3 0
3 years ago
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pablo drove 240 mies using 9 gallons of gas. At this rate how many gallons of gas would he need to drive 216 miles?
adell [148]
He would need 8 gallons of gas
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2 years ago
F(x)=1/2×+6 plz helpppppppppp​
FromTheMoon [43]

Answer:

The solution set can be given as:

\{x|x\ \epsilon\ R,x\neq -3\}

Step-by-step explanation:

Given function:

f(x)=\frac{1}{2x+6}

To find the domain of the function in set notation.

Solution:

For the function f(x) to exist the denominator must be ≠ 0

We have the denominator (2x+6) which  cannot be = 0.

Thus, we can find the domain of the function using the above relation.

The function f(x) will not exist when:

2x+6=0

Solving for x

Subtracting both sides by 6.

2x+6-6=0-6

2x=-6

Dividing both sides by 2.

\frac{2x}{2}=\frac{-6}{2}

∴ x=-3

Thus, the function will not exist at x=-3. This means it has all real number solutions except -3.

The solution set can be given as:

\{x|x\ \epsilon\ R,x\neq -3\}

3 0
3 years ago
What value of X makes this equation true?
Studentka2010 [4]

Answer:

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Step-by-step explanation:

-53=8x+5

First you would subtract the 5 on both sides then you would end up with

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3 years ago
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