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xxMikexx [17]
3 years ago
14

A test worth a total of 100 points contains multiple choice questions worth 3 points each and essay questions worth 11 points ea

ch. There are 20 questions on the test. Use the graphing method to determine how many questions there are of each type.
A) 3 essay and 17 multiple choice
B) 5 essay and 15 multiple choice
C) 6 essay and 14 multiple choice
D) 10 essay and 10 multiple choice
Mathematics
2 answers:
natulia [17]3 years ago
3 0
The correct answer is B
musickatia [10]3 years ago
3 0

Answer:

Test contains 15 multiple choice and 5 essay .

Option (B) is correct .

Step-by-step explanation:

Let us assume that the multiple choice questions be x.

Let us assume that the essay questions be y.

As given

A test worth a total of 100 points contains multiple choice questions worth 3 points each and essay questions worth 11 points each.

Than the equations becomes

3x + 11y = 100

There are 20 questions on the test.

Than the equations becomes

x + y = 20

The two equations are

3x + 11y = 100 and  x + y = 20

Multiply  x + y = 20  by 3 and subtracted from 3x + 11y = 100

3x - 3x + 11y - 3y = 100 - 60

8y = 40

y = \frac{40}{8}

y =  5

put in the equation x + y = 20

x + 5 = 20

x = 20 - 5

x = 15

Therefore test contains 15 multiple choice and 5 essay .


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Step-by-step explanation:

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3 years ago
Which of the following are geometric sequences?<br> Check all that apply.
kolezko [41]

Answers:

<h2>C & D</h2>

Step-by-step explanation:

There are two general types of sequences that follow a pattern, geometric and arithmetic. Let's see the difference between the two:

An arithmetic sequence is produced by adding the same number to all the terms in the sequence.

EXAMPLE:

5, 7, 9, 11, 13, 15, 17 (The number 2 is added to all terms)

To figure out if a sequence is arithmetic, subtract the first term from the second, then the second from the third and so on until you have checked all the terms.

7 - 5 = 2

9 - 7 = 2

11 - 9 = 2

13 - 11 = 2

15 - 13 = 2

17 - 15 = 2

All results equal 2, so the sequence is arithmetic

From your list: The following sequences are arithmetic

A. 5, 10, 15, 20, 25 (common difference of 5)

The next type of sequence is the geometric sequence.

A geometric sequence is produced when the all the terms in the sequence are multiplied or divided by the same number.

EXAMPLE:

100, 50, 25 (Each term is divided by 2)

To figure this out, we divide each term in the sequence by the next term.

100 / 50 = 2

50 / 25 = 2

All results are two, so this sequence can be confirmed to be geometric

From your list: The following sequences are geometric

C. 10, 5, 2.5, 1.25, 0.625, 0.3125 (common quotient of 2)

D. -9, -3, -1, -1/3, -1/9, -1/27 (common quotient of -3)

There is one final type of sequence, which has no common difference, sum, quotient, or product.

EXAMPLE:

5, 6, 8, 9, 11, 12, 14, 15

This sequence has a pattern, the differences between the numbers are not common.

6 - 5 = 1

8 - 6 = 2

9 - 8 = 1

11 - 9 = 2

12 - 11 = 1

14 - 12 = 2

15 - 14 = 1

From your list: The following sequences are neither geometric nor arithmetic

B. 1, 1, 2, 3, 5, 8, 13 (No pattern)

I'n always happy to help :)

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3 years ago
What IS the aswer PLZZZZZZZ help
BabaBlast [244]

Answer:

ONE PAW AND MAW

Step-by-step explanation:

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2 years ago
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hichkok12 [17]
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3 years ago
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