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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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PLEASE HELP For what value of the variable will the value of 2x+1 be 20 greater than 8x+5?
wlad13 [49]

It will be a negative.

for an example: -20 for x would mqke 2x + 1 into -39 and 8x + 5 into -155. that's 116 apart, so maybe -2(8) + 5 = -11

-2(2) + 1 = -3

but that's only 8 apart, so it'd be higher.

-4(2) + 1 = -7

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6 0
3 years ago
6. Mr. Bernard travels 5.12 km per hour on his bike. How far can he travel in 3.25 hours?
Whitepunk [10]

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6. C. 16.64 km

7. B. P 216.00

8. B. P 565 425

9. C. 0.27

10. D. 24.6875

11. B. 3 kg

12. B. ratio

13. A. Proportion

14. D. 6:10

15. B. 2:3

Step-by-step explanation:

6. Mr. Bernard travels 5.12 km per hour on his bike. How far can he travel in 3.25 hours?

Speed = 5.12km/hr

Time = 3.25 hr

To find the distance;

Distance = speed * time

Distance = 5.12 * 3.25

Distance = 16.64 km

7. Mrs. Allysa purchased 48 pencils at P 4.50 each. How much did she pay for all the pencils?

Quantity = 48 pencils

Cost price = P 4.50

To find the total selling price;

Total = quantity * cost price

Total = 48 * 4.50

Total = P 216

8. The Villaroel family bought a 125.65 square meter lot at P 4500.00 per square meter. How much did they

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Quantity = 125.65 m²

Cost price = P 4500

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9. What is 2.7/10 = 0.27

10. What is 98.75/4 = 24.6875

11. A store owner has 63 kilograms of candy. If she puts the candy into 21 jars, how much candy will each jar

contain?

Mass = 63 kg

Amount = 21 jars

Each jar = 63/21 = 3 kg

12. Ratio: It is the quantitative relation between two amounts showing the number of times one value contains or is contained within the other.

13. Proportion: It is a statement that two ratios are equal.

14. What ratio is equal to 3:5?

We would multiply both ratio by 2

3:5 * 2 = 6:10

15. What ratio is proportional to 4:6?

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7 0
3 years ago
27 + 5 x 6 A Little Problem With this so some help please?
Kay [80]

Answer:

57

Step-by-step explanation:

1) According to PEMDAS, <em>multiply </em>first: 27+ 5x6= 27+30

2) Then <em>add</em>: 27+30=57

3 0
3 years ago
Read 2 more answers
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