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blondinia [14]
4 years ago
10

Factor 2) x2 – 3x – 18

Mathematics
1 answer:
Anna71 [15]4 years ago
6 0

Answer:

By inspection you need 2 numbers that multiply together to 18 and sum to 3. These numbers are 6 and 3. Therefore we have to find the value of x but we dont have that so we have this:

x to the power of 2-3x - 18 = ( X - 6) ( x + 3)

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6x+3(4x-2)=5(2x-8) the answer is -17/4 but can someone explain how to get that answer? plz help lol​
Sergeu [11.5K]

Answer:

<h2>x =  -  \frac{17}{4}</h2>

Step-by-step explanation:

6x + 3(4x - 2) = 5(2x - 8)

Expand the terms in the bracket and simplify

That's

6x + 12x  - 6 = 10x - 40 \\ 18x - 6 = 10x - 40

Using the subtraction property subtract 10x from both sides of the equation

18x - 10x - 6 = 10x - 10x - 40 \\ 8x - 6 =  - 40

<u>Add 6 to both sides of the equation</u>

8x + 6 - 6 =  - 40 + 6 \\ 8x =  - 34

<u>Divide both sides by 8</u>

\frac{8x}{8}  =  -  \frac{34}{8}

<u>Reduce the fraction with 2</u>

We have the final answer as

x =  -  \frac{17}{4}

Hope this helps you

7 0
4 years ago
How do you find the length of an arc of a circle with a radius of 45 cm if the arc subtends a central angle of 20 degrees?
RUDIKE [14]

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3 years ago
Please please help me What is 5% of 200?
Leni [432]

Answer:

10

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
How long could the. Mural be if the length and height have to be whole numbers
mylen [45]
The height has to be 4, 5, or 6, so the width would be 15, 12, and 10 respectively.
4*15=60
5*12=60
6*10=60
These are the only whole numbers between 4 and 6, as whole numbers are non-decimal numbers greater than or equal to 0
8 0
4 years ago
For each value of u, determine whether it is a solution to 6u-1&lt; −19. u Is it a solution? Yes or No 5 −4 −3 8
Agata [3.3K]

Answer:

No it is not a solution to 6u-1<-19

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2 years ago
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