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Verdich [7]
3 years ago
5

Help plz due now will mark brainliest if correct

Mathematics
1 answer:
Maurinko [17]3 years ago
3 0

Answer:

2^3

Step-by-step explanation:

you subtract the exponents if they have the same coefficient when dividing them.

9-6=3

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The roots of the equation 3x²-2x-4=0 are J and K. Evaluate J² + K².
melamori03 [73]

Answer:

28/9

Step-by-step explanation:

If the roots are J and K, then:

3 (x − J) (x − K) = 0

3 (x² − (J+K)x + JK) = 0

So if we factor out the leading coefficient:

3x² − 2x − 4 = 0

3(x² − 2/3x − 4/3) = 0

The coefficient of the second term is the sum of the roots:

J + K = 2/3

And the constant is the product of the roots:

JK = -4/3

If we take the sum of the roots and square it:

(J + K)² = (2/3)²

J² + 2JK + K² = 4/9

And subtract twice the product:

J² + K² = 4/9 − 2JK

J² + K² = 4/9 − 2(-4/3)

J² + K² = 4/9 + 8/3

J² + k² = 28/9

6 0
3 years ago
An employee in a shoe repair store must schedule his day so that he can complete all of his work. To do that, he must know how l
sdas [7]

It takes him 17 minutes to make each shoe.

<em>How to Solve: </em>

  1. take away the 30 min lunch break from the time becomes 11:45 to 4:00
  2. calculate the distance from 11:45 to 4:00 which is 4 hours and 15 minutes to complete each shoe.
  3. Convert the hours into 60 minutes each so 60*4= 240 now add the extra minutes 240+15= 255 minutes
  4. Now divide that bye 15 shoes 255/15= 17 minutes
  5. So it takes 17 minutes to make each shoe. :)
6 0
3 years ago
HELP ME YOULL GET BRAINLYIEST
Marina86 [1]

Answer:

c

i think

Step-by-step explanation:

3 0
3 years ago
HELPPPP ASAP
Elan Coil [88]

Answer:

The answer is 3, 5, and 9

7 0
3 years ago
In a dog show, how many ways can 3 beagles, 2 poodles, and 5 grey hounds line up if the dogs of the same breed are considered id
Tema [17]

Answer:

30

Step-by-step explanation:

3 x 2 x 5 equals 30

6 0
2 years ago
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