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Tresset [83]
3 years ago
7

A math contest requires that participants complete all 12 problems on the contest exam. Each participant receives 5 points for e

ach correctly solved problem and loses 3 points for each incorrect or omitted answer. If I received a score of 36, how many problems did I solve correctly?
Mathematics
2 answers:
IgorLugansk [536]3 years ago
8 0
You got 9 right, because 5x -3y = 36
For you to lose points, having answered all of thee questions, to the point of which you were given 36 out of 60 possible points tells that you must have gotten over half right for points to have been taken away, and the only factors that satisfy the equation with those restrictions would determine that x must equal 9, making the amount you got right worth 45 points, but with y equal to 3, 9 points were taken away from that score, making it 36. This can also be displayed on a x versus y graph. 
Allisa [31]3 years ago
7 0

the answer is nine because 9times 5 equals 45 subtract 9 equals 36


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You need 150g of flour for 12 cakes, how much flour do you need for 30 cakes?
nirvana33 [79]
If you need 150g of flour for 12 cakes, that means you need 12.5 g of flour per cake. So if you multiply that by 30 it gives you
375g of flour

3 0
3 years ago
Read 2 more answers
19x+rx=−37x+w solve for x
Oksanka [162]
Get all the x terms on one side, and the w on the other.
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4 0
3 years ago
HElPPPPPPPPP PPZPZLXPLZPLZPZZZZZZZZ
monitta

Answer:

5. 43 / 6

6. 8.027778

2. -0.167

4. 1.5

Step-by-step explanation:

5. Conversion a mixed number to a improper fraction: 9 2/3 = 9 · 3 + 2 /3 = 29/3

Conversion a mixed number to a improper fraction: 2 1/2 = 2 · 2 + 1 /2 = 5/2

Subtract: 29/3 - 5/2 = 29 · 2 / 3 · 2 - 5 · 3 / 2 · 3 = 58 / 6 - 15 / 6 = 58 - 15 / 6 = 43 / 6

6. 2 4/9 + 5 7/12 = 289 / 36 = 81 / 36 = 8.027778

2. 3/4 - 11/12 = -1 / 6 =-0.1666667

4. 1 9/10 - 2/5 = 3 / 2 = 11 / 2 = 1.5

5 0
3 years ago
20 points! HELP AND ILL MARK BRAINLIEST!
Keith_Richards [23]

you do 77 divided by 14 you get 5.5 so the greatest number of teams is 5.

4 0
3 years ago
243^-y=(1/243)^3y*9^-2y<br><br><br> a.) y=-1<br> b.) y=0<br> c.) y=1<br> d.) no solution
allochka39001 [22]
243^{-y}=(\frac{1}{243})^{3y}\times 9^{-2y} has y = 0 as a solution.

Selection B is appropriate.
8 0
3 years ago
Read 2 more answers
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