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Ira Lisetskai [31]
3 years ago
5

Izzie recently took a math test where each correct answer (a) on the main part of the test was worth 8.3 points. She also correc

tly solved a bonus question worth 11 points. Using the equation 8.3a + 11 = 110.6, how many correct answers (a) did Izzie have on the main part of the test?
Mathematics
1 answer:
Temka [501]3 years ago
4 0

Answer:

12 correct answers

Step-by-step explanation:

Since in the main part she scores 8.3 points for each question she answers correctly, we can assume that the number of questions she answers correctly=a

Therefor, the total number of points she achieved in the math test in the main part alone can be expressed as:

Total score(main part)=8.3×a=8.3a points

She also solved a bonus question worth=11 points

Consider expression 1 below

The total score in the whole test=Total score in the main part+Bonus points, where;

Total score in the whole test=110.6 points

Total score in the main part=8.3a points

Bonus points=11 points

Substituting the values in expression 1:

8.3a+11=110.6

8.3a=110.6-11

8.3a/8.3=99.6/8.3

a=12

Number of correct answers in the main part=a=12

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