Solving the system: -3u + 8v = -28 and 9u- 4v = 44, will give u= will give v=

1 answer:

6 0

-3u+8v=-28x9
9u-4v= 44x-3

-27u+72v=252
-27u+12v= -132
60v=384
Divide both sides by 60
60v= 384
60. 60
v=6.4

Substitute v=6.4 in equ 1
-3u+8(6.4)= 28
-3u+51.2=28
-3u=28-51.2
-3u=-23.2
Divide both sides by-3u
-3u=-23.2
-3. 3
u=7.73
Therefore u=7.73 and v=6.4

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4 years ago

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Answer:

Step-by-step explanation:

Assuming both players can answer the same question, the minimum number of questions is the smallest number that when multiplied by either 0.60 or 0.80 yields a whole number.

Let x be the number of questions, solving by trial and error:

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