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Sergeu [11.5K]
2 years ago
15

Which expressions are equivalent to 9+h+ (j+k)? Check all that apply.

Mathematics
1 answer:
GaryK [48]2 years ago
5 0

Answer:3

the 3rd one

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Answer: Just work step by step managers

Step-by-step explanation:

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3 years ago
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I am stuck please help!
olga2289 [7]

Answer:

5x - 63 = 6

Step-by-step explanation:

Okay, first step, let's get all fractions having a common denominator, to do this, multiply 2/3 by 3 to get 6/9. Now, we have 5/9x-7=6/9. To make these into whole numbers, we can multiply the whole equation by the denominator (9). 5/9x multiplied by 9 is 5. 7 multiplied by 9 is 63. 6/9 multiplied by 9 is 6. Now we have 5x-63=6. If I were to simplify the equation, it would require decimals, so I'll leave it at this, but the equation simplified is x=13.8.

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What are the roots of this quartaic equation?<br> -102 + 12r - 9 = 0
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Answer:

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Solve the system of equations. y= x + 17, y= 3x+1
Lemur [1.5K]

Answer:

x=8, y=25. As a point it's (8,25)

Step-by-step explanation:

here is the system:

y=x+17

y=3x+1

notice how both of the equations equal y. Therefore, we can substitute one expression as y in the other expression. (It'll equal y=y, which is a true statement)

so it'll be:

3x+1=x+17

subtract 1 from both sides

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divide by 2

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now, substitute 8 as x into one of the equations and solve for y

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y=8+17

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Answer:

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Hope this helps!

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