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vodomira [7]
3 years ago
11

Match the expressions given in words with their values when d= 3. Help

Mathematics
1 answer:
Scrat [10]3 years ago
6 0

Answer:

3

4

0

2

Step-by-step explanation:

3

4

0

2

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A teacher gave a test to a class in which 10% of the students are juniors and 90% are seniors. The average score on the test was
IceJOKER [234]

Each junior  receives 93 score on the test. It is also the average score of the juniors.

Given Information

It is given that 10% of the strength of the class consists of juniors and 90% consists of seniors.

Let us assume the total strength of the class is 100, then,

Number of seniors = 90

Number of juniors = 10

It is also given that the average score of the class = 84

And, average score of the seniors = 83

Another given information is that all the juniors all received the same score, which is their average score. Let it be x.

Average Score of Juniors

Total marks obtained by the seniors = Number of seniors × Average score of seniors

= 90 × 83

= 7470

Total marks obtained by the juniors = Number of juniors × Average score of juniors

= 10x

Average marks on the test = Total marks / Total number of students

⇒ 84 = (7470 + 10x)/100

⇒ 84 × 100 = 7470 + 10x

⇒ 10x + 7470 = 8400

⇒ 10x = 8400-7470

⇒ 10x = 930

⇒ x = 930/10

⇒  x = 93

Thus, each junior scores 93 on the test.

Learn more about average here:

brainly.com/question/24057012

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5 0
2 years ago
12.3-21<br><br> Work too please
alina1380 [7]
Since 12.3 is less than 21 it will be a negative number. so just subtract 12.3 from 21 and put a negative symbol in front of the answer.

4 0
3 years ago
In a ABC, the bisector of A divides BC into segment BD with a length of 28 units and segment DC with a length of 24 units. If AB
leonid [27]

Answer:

Please dont delete

Explanation:

Hello. I am sorry that I can not answer your question but I am doing this so I can get answers of my own. I appreciate your understanding and I hope you get your answer soon. Good luck!

6 0
3 years ago
An arithmetic sequence has the terms a6=53 a 6 = 53 and a8=61 a 8 = 61 . Questions: What is the value of d d ? AnswerIncorrect W
leonid [27]

The given terms are two terms apart, so their difference is twice the difference of adjacent terms.

a_8-a_6=2d=61-53=8\\\\d=\dfrac{8}{2}=4

The value of d is 4.

3 0
3 years ago
Read 2 more answers
What is the coefficient of the term ​ 67xy 1/7, 6, 6xy, and 6/7 Which one do I pick?
Scorpion4ik [409]
You would pick You would choose 6xy, or 67xy, unless that is with the 1/7,
and this is because the definition of a coefficient is "<span>a numerical or constant quantity placed before and multiplying the variable in an algebraic expression",
so both of these have variables.</span>
6 0
3 years ago
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