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Rainbow [258]
2 years ago
6

Which values of x make this equation true?

Mathematics
1 answer:
Evgesh-ka [11]2 years ago
3 0

Answer:

{x}^{2}  + x = 12 \\  {x}^{2}  + x - 12 = 0 \\  {x }^{2}  + 4x - 3x - 12 = 0 \\ x(x + 4) - 3(x + 4) = 0 \\ (x + 4)(x - 3) = 0 \\ either \:  \:  \: or \:  \\ x =  - 4 \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: x = 3

the answer is -4 and 3

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7 0
3 years ago
What is the greatest common factor of 3a^2+30a
Lisa [10]

Answer:

3

Step-by-step explanation:

3 is a prime number so other than 3x1 3 does not have any other factors

6 0
4 years ago
Two numbers have a sum of 1,212 and a difference of 518. Which system of equations could we use to solve this problem?
Sloan [31]
X+y =1212
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8 0
4 years ago
Read 2 more answers
How do solve this problem? <br> 1 2/5x =7
elena55 [62]

Answer:

if you are solving for x then the answer is 5

Step-by-step explanation:

5 0
3 years ago
Each of 11 refrigerators of a certain type has been returned to a distributor because of an audible, high-pitched, oscillating n
Pie

Answer:

The correct answer is 1,51%

Step-by-step explanation:

To get the probability  equally likely of the first 6 examined that have a defective compressor, we use the following formula

P=# of possibilities that meet the condition / #of equally likely possibilities.

As there are multiple events ,  and all must be achieve, we multiply the probabilities.

P1=7 / 11

P2=6 / 10

P3=5 / 9

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P5=3 / 7

P6=2 / 6

P(x)=7 / 11*6 / 10*5 / 9*4 / 8*3 / 7*2 / 6=0,01515151515

P(x)=1,51%

3 0
3 years ago
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