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Misha Larkins [42]
2 years ago
6

Evaluate and simplify if possible:

Mathematics
1 answer:
Yuki888 [10]2 years ago
3 0
\frac{2x(3y - 4z)}{3(5x + 4z)}   Plug in the given values
\frac{2(4)(3(-1) - 4(-3)}{3(5(4) + 4(-3)}   Multiply where needed
\frac{8(-3 + 12}{3(20 - 12)}   Add and subtract inside the parentheses
\frac{8(9)}{3(8)}   Multiply
\frac{72}{24}
3


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Irina-Kira [14]

Answer:

  200 kg

Step-by-step explanation:

If w is the amount of water added, then the concentration of the solution is ...

  salt/solute = 100(0.30)/(100 +w) = 0.10

  30 = 10 +0.10w . . . . . simplify

  20 = 0.10w . . . . . . . . subtract 10

  20/0.10 = w = 200 . . . . divide by 0.10

200 kg of water must be added to dilute the solution to 10%.

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2 years ago
An airplane can seat up to 175 passengers. The airline has already sold 87 tickets for a flight on the airplane. Which
spayn [35]

The inequality is solved, and then, the graph is given at the end of this question.

------------------

  • 87 tickets have already been sold.
  • x can still be sold.
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87 + x \leq 175

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A similar problem is given at brainly.com/question/24132092

7 0
1 year ago
Please help me figure out the answer to this I'm a bit confused
scZoUnD [109]

Answer:

y= 1/2x + 1

Step-by-step explanation:

Refer to y=mx+b, m=slope and b= y-intercept

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Next, find the y-intercept. It is where the line touches the y-axis. Here, it would be 1.

Finally, put these in y=mx+b form:

y=(slope)x+(y-intercept) ---> y= 1/2x + 1

I tried my best to explain everything, I hope you found this helpful!

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0=1

Step-by-step explanation:

Solve 2 + 2x = 3 + 2x using Inverse operations. How does the algebralc result show you that there is no solution

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Y=8x+25, where x is hours . what is the y-intercept
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Y-intercept is 25. Plug 0 in for x.
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