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dexar [7]
3 years ago
10

Evaluate 5 - 3(-2) + 1-3|​

Mathematics
2 answers:
Naya [18.7K]3 years ago
6 0

Answer:

9

Step-by-step explanation:

5 - 3 (-2) + 1- 3

5 - (- 6) + 1 - 3

5 + 6 + 1 - 3

11 + 1 - 3

12 - 3

9

<h2>the bold means what is happening to get to the total answer</h2>

marishachu [46]3 years ago
5 0

Answer:

9

Step-by-step explanation:

5 - 3(-2) + 1-3

5 + 6 - 2

11 - 2

9

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Sonbull [250]
X=number of corect
y=number of incorrect
5 points for each correct so 5x
-1 point for each incorrect so -y

5x-y=76
solve for x and y

I like putting it into slope intercep tofrm which is y=mx+b
add y to both sides
5x=76+y
subtract 76 from both sides
5x-75=y
y=5x-76

subsitute values for x and get values for y
remember, that julia cannot answer a negative number of incorrect questions so y must be greater than or equal to 0

so solve for minimum
0<u><</u>5x-76
add 76 to both sides
76<u><</u>5x
divide by 5
15.2<u><</u>x
you cannot answer a fraction of a correct quesiton so round up
16 is the minumum number of queswtions correctlyh answered


so
x<u>></u>16

subsitute 16 for x
y=5(16)-76
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y=4

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so (x,y) 
(16,4)
(17,9)
(18,14)
(19,19)
(20,24)
(21,29)
(22,34)
(23,39)
x=correct answer
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