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Zinaida [17]
3 years ago
9

PLEASE ANSWER + BRAINLIEST!!!!

Mathematics
1 answer:
Maslowich3 years ago
5 0

Answer: aₙ = [d-(d-n)]*10

where n is the number of questions answered correctly and d is the total amount of questions.

Step-by-step explanation:

By understanding the question we can tell than she will be rewarded for each corrct answer. so, how many wrong answers she/he can have?

d-n= Total number of wrong answers

d- (d-n) = Total number of correct answers

price: 10 for each correct answer, so:

price: [d-(d-n)]*10

Therefore:

aₙ = [d-(d-n)]*10

You might be interested in
Which of the following is the equation of a line perpendicular to the line y=-3/2x+4, passing through the point (3, 9)?
Anastaziya [24]

Answer: -2x+3y = 21 which is choice C

============================================

Work Shown:

The slope of the original line is -3/2. The perpendicular slope is 2/3. We flip the fraction and flip the sign. Multiplying the original slope (-3/2) and the perpendicular slope (2/3) will result in -1. Let's use this perpendicular slope and the point to find the equation of the perpendicular line in slope intercept form.

y = m+b

y = (2/3)x+b .... plug in the perpendicular slope

9 = (2/3)(3)+b .... plug in the point (x,y) = (3,9)

9 = 2+b

9-2 = 2+b-2 ... subtract 2 from both sides

b = 7

So y = (2/3)x+b turns into y = (2/3)x+7.

This equation is in slope intercept form.

---------------------------

Let's convert to standard form

y = (2/3)x+7

3*y = 3*((2/3)x+7) ... multiply both sides by 3 to clear out the fraction

3*y = 3*(2/3)x+3*7 ... distribute

3y = 2x+21

-2x+3y = 21 .... get the x term to the other side (subtract 2x from both sides)

4 0
3 years ago
The Math Counts Club had a party at their school. There were 20 cookies and 40 slices of pizza to be shared equally. Each studen
pychu [463]

Answer:

  • 2, 4, 10 or 20 students

Step-by-step explanation:

<u>Prime factors:</u>

  • 20 = 2*2*5
  • 40 = 2*2*2*5

<u>Common factors of the two numbers: </u>

  • 2, 4, 10, 20

Possible number of students as above

4 0
3 years ago
I need help in this question please !​
Tresset [83]
The answer would be 100/101 if we follow according to the rule on which the sequence is based on!
5 0
3 years ago
Read 2 more answers
62.4% of what is 17.16?
Maksim231197 [3]
To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 17.16 is 100% - because it's the output value of the task.

2. We assume, that x is the value we are looking for.

3. If 17.16 is 100%, so we can write it down as 17.16 = 100%.

4. We know, that x is 62.4% of the output value, so we can write it down as x=62.4%

5. Now we have two simple questions:

1) 17.16 = 100%

2) x=62.4%

Where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:

17.16÷x=100%÷62.4%

6. Now we just have to solve the simple equation, and we will get the  solution we are looking for.

7. Solution for what is 62.4% of 17.16

17.16÷x=100/62.4%

(17.16÷x)×x=(100÷62.4%)×x

17.16=1.60256410256×x

(1.60256410256) to get x

17.16÷1.60256410256=x

10.70784=x

x=10.70784

Now we have:
62.4% of 17.16=10.70784

So 10.70784 is your answer

Hope this  helps :)



3 0
4 years ago
Read 2 more answers
Please help me! I'll give you 15 points. I need this ASAP! I need answers from 1-5. thank you
Debora [2.8K]

Answer: x=y=c=csquar

Step-by-step explanation: math

5 0
3 years ago
Read 2 more answers
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