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igor_vitrenko [27]
3 years ago
11

(x+6)(x-4)=

Mathematics
2 answers:
lisov135 [29]3 years ago
6 0

Answer:

x^{2} +2x-24

2x^{2}-x-15

6x^{2}+19x+10

2x^{2}-11x+5

Step-by-step explanation:

dalvyx [7]3 years ago
5 0

Answer

1. x²+2x-24

2. 2x²-1x-15

3. 6x²+19x+10

4. 2x²-11x+5

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Need answer has soon has possible no need to explain
11Alexandr11 [23.1K]

Answer:

y= 11

11 squared = 121

8 0
3 years ago
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PLEASE HELP!!!!!!!!!!!!! 50 POINTS!!!!!!
a_sh-v [17]

Answer:

only one has the value of -12

Step-by-step explanation:

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3 years ago
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9. Determine whether or not the number 257 is prime.
Sladkaya [172]

Answer:

257 is prime.

Step-by-step explanation:

To evaluate if a number is prime, we just need to evaluate it for the prime numbers that are equal or lesser than the said number's square root.

In this case, √257 = 16.03 so we just need to see if 257 is divisible by <u>2, 3, 5, 7, 11 and 13</u> (the prime numbers that come before 16)

  • 257 is odd, so it is not divisible by 2.
  • The sum of its digits is 14, therefore, it is not divisible by 3.
  • 257 ends in 7, therefore it's not divisible by 5.
  • 257/ 7 = 36.71 so it's not divisible by 7.
  • 257/ 11 = 23.36 so it's not divisible by 11
  • Finally 257 / 13= 19.76 so it's not divisible by 13.

Therefore, 257 is prime.

7 0
3 years ago
Can someone explain to me in words how to do this problem 3x+122=22x-11
inn [45]

When you have this type of problem, you need to combine the like-terms and isolate the variable.

3x + 122 = 22x - 11

Add 11 to both sides to get rid of it

3x + 122 + 11 = 22x - 11 + 11     (-11 + 11=0)

3x + 133 = 22x

Then you would bring the 3x to the other side, so subtract 3x from both sides

3x + 133 = 22x

-3x             -3x

133 = 22x - 3x

133 = 19x

Then divide both sides by 19 to isolate x

133/19 = 19x/19

133/19 = 7, so x = 7

Hope this helps!!

8 0
3 years ago
Please help, thank you!
shutvik [7]
65 x6 = 390
80 x 3= 240

390+240 = 630
3 0
3 years ago
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