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Gennadij [26K]
3 years ago
13

If f(x) = -(-2x - 5), what is f(-5)?

Mathematics
2 answers:
inessss [21]3 years ago
5 0

<u>Answer: </u>

If f(x) = -(-2x - 5), then f(-5) is equal to -5

<u>Solution:</u>

Given that the function is f(x) = -(-2x – 5)

We are asked to find the value of f(-5)

<u><em>Finding value of f(-5):</em></u>

The value of f(-5) can be found by substituting -5 in place of “x” in the given function f(x) = -(-2x – 5)

f(x)= -(-2x-5)

For f(x) = f(-5),  

f(-5)= -(-2(-5)-5)

f(-5)= -(10-5)

f(-5)= -5

The value of the above given function f(x)= -(-2x-5) for x= -5 i.e., f(-5) is -5

sammy [17]3 years ago
4 0

Answer:

f(-5)=-5

Step-by-step explanation:

f(-5)= -((-2)(-5)-5)

     = -(10-5)

     = -(5)

     = -5

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arlik [135]
Equation: 4x + 7 = 3(2x - 5)

Step-by-step solution:

• Expand brackets

-> 4x + 7 = 6x - 15

• Move x variable to a side and the numbers to another

-> 4x - 6x = -15 - 7

• Solve

-> -2x = -22

• Multiply both sides by (-1)

-> -(-2x) = -(-22)
-> 2x = 22

• Divide both sides by 2

-> x = 22/2

-> x = 11

• Justification
-> Put x = 11 in original equation
-> 4(11) + 7 = 3( 2(11) - 5)
-> 44 + 7 = 3(22 - 5)
-> 51 = 3(17)
-> 51 = 51
-> 51 - 51 = 0
-> 0 = 0
Since both sides are equal to each other, the answer to the equation is correct.

I don't know Sam's equation so I'm not gonna answer that.
5 0
3 years ago
Aaron is making a jewelry box of wood in the shape of a rectangular prism the jewelry box will have the dimensions shown in the
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Answer:

b. $342

Step-by-step explanation:

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Base Area = 12 * 5

B = 180 square inches.

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P = 54 inches

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X = 54 * 6 + 2 * 180

X = 684 square inches.

Total cost for paint of jewelry box is :

X * cost per inch

Total cost = 682 * $0.50

Total Cost = $342.

8 0
3 years ago
The equation 2.2x − 4.4 = 1.8x can be transformed to form which of the following expressions?
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The answer to this mathematical question would be "0.4x = 4.4". I simply subtracted 1.8x to both sides of the equation (following the subtraction property of equations) and then added 4.4 to both sides of the equation (following the addition property of equations). Thus, we arrive to the answer, 0.4x = 4.4.
6 0
3 years ago
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Answer:

(0.237)

Step-by-step explanation:

7 0
3 years ago
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How do I solve for d if d/M-3=R
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Answer:

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Step-by-step explanation:

d/M - 3 = R

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Hope this helps!

5 0
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