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OLEGan [10]
3 years ago
11

Solve for x: −3(x + 3) = −3(x + 1) − 5.

Mathematics
2 answers:
Stells [14]3 years ago
7 0

Answer:

no solution

Step-by-step explanation:

−3(x + 3) = −3(x + 1) − 5.

Distribute

-3x-9 = -3x-3-5

Combine like terms

-3x-9  =-3x-8

Add 3x to each side

-3x-9+3x = -3x-8+3x

-9 = -8

This is never true so there is no solution

PilotLPTM [1.2K]3 years ago
3 0

Answer:

x=-7/9

Step-by-step explanation:

To solve this equation we would consider the bracket first according to BODMAS rule

B ..... Bracket open

O........ Of

D,............. Division

M............. Multiplication

A.............. Addition

S............. Subtraction

So, from the question

-3( x +3) = 3(x+1)-5

-3x -9 = 3x + 3 - 5

Collecting like terms

-3x -3x = 3-5+9

-9x= 7

Dividing both sides by -9

-9x/-9= 7/-9

x=-7/9

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Answer: F

Step-by-step explanation:

For a 30-60-90 triangle, we know that the hypotenuse is 2x. Since we know the hypotenuse is 10, we can solve for x.

2x=10

x=5

Now that we know x is 5, we can use this to solve for s and q. The side across from 30° is just x. Since we know x, s is 5.

The side across from 60° is x√3. Since we know what x is, we can just plug in. q is 5√3.

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3 years ago
I don’t quite get the concept yet and i really don’t wanna bother the teacher again :/ please help
IrinaVladis [17]

Answer:

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Step-by-step explanation:

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3 years ago
If a polynomial function f(x) has roots 6 and square root of 5, what must also be a root of f(x)?
ivolga24 [154]

Answer:

-\sqrt{5}

Step-by-step explanation:

A root with square root or under root is only obtained when we take the square root of both sides. Remember that when we take a square root, there are two possible answers:

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For example, for the equation:

x^{2}=3

If we take the square root of both sides, the answers will be:

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Only getting one solution with square root is not possible. Solutions with square root always occur in pairs.

For given case, the roots are 6 and \sqrt{5}. Therefore, the 3rd root of the polynomial function f(x) had to be -\sqrt{5}

It seems you made error while writing option B, it should be - square root of 5.

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Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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