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mario62 [17]
2 years ago
9

PLEASE ANSWER WITH SOLUTION PLS

Mathematics
2 answers:
katen-ka-za [31]2 years ago
7 0

Answer:

whatever% of anything, is just (whatever/100) * anything.

there were a total of 560000 votes, now, off those some are valid and some are invalid.

we know 15% of that are invalid, that simply means that 85% are valid, since 85% + 15% is the whole thing, or 100%, if 15% are not good, the other 85% are the good ones.

how many are the valid ones anyway?  well, 85% of 560000, which is just (85/100) * 560000.

we know that off those valid ones, the candidate got 75% of those, so how much is 75% of that?

well, (75/100) * [ (85/100) * 560000 ].

Step-by-step explanation:

Hunter-Best [27]2 years ago
4 0

Answer:

See below ↓

Step-by-step explanation:

1.

  • Score of the student on examination = marks scored / total marks
  • Score = 235/300 [Divide throughout by 5]
  • Score = 47/60 [Using long division, approximate to tenths place]
  • Score = 0.783 [Multiply with 100 to convert decimals → percentage]
  • Score = <u>78.3%</u>

<u></u>

2.

  • Total valid votes = 560 x (100 - 15)%
  • Total valid votes = 560 x 0.85
  • Total valid votes = 476
  • Votes for Magie N. Hawa = 476 x 70%
  • Votes for Magie N. Hawa = 333.2 ≅ <u>333 votes</u>

<u></u>

3.

  • 108 girls = (100 - 70)% of pupils
  • 108 / 0.3 = number of pupils
  • <u>360 pupils</u>
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Step-by-step explanation:

8 0
3 years ago
Mark records his science scores in each monthly assessment over a period of 5 months. In the first assessment he scores 76%. In
Trava [24]

This is the complete question:

Mark records his science scores in each monthly assessment over a period of 5 months. In the first assessment he scores 76%. In the second assessment he scores 73%. After that, his scores keep increasing by 2% in every assessment.  Assume that x represents the number of assessments since he starts recording and y represents the scores in each assessment, which of the following describes the situation?

a. a relation only b.

b. neither a function nor a relation

c. a function only

d. both a relation and a function

Answer:

  • <u><em>d. both a relation and a function</em></u>

Step-by-step explanation:

<em>A relation</em> is any statement, either verbal or mathematical, that connects, interrelates or associates, two or more elements (objects, persons, variables).

The text describes a situation where the scores in the assesments are related to the number of statements since Mark starts recording, hence this is a relation.

<h2>Is this relation a function or not?</h2>

In order for a relation be a function, the association has to be unambiguos. This means that for a given input only one output can exist. If an input can have two or more outputs, then you can not determine which is the output for that input. This is what defines whether a relation is a function or not.

In the situation described in the text, x is the input, i.e. the number of assessments since Mark starts recording the scores. Definetely, the number of assessment is not repeated: there is only one first assessment, only one second assessment, only one third assessment, ... the number of assessment cannot not get repeated. Of course, if the input is not repeated, there is only one output associated to the input (each assessment has just one associated score)  and the relation is a function.

3 0
3 years ago
10 + 2(7 - 9x) = 5(2x - 12)<br><br><br>Full steps as well please
blagie [28]

Answer:

x = 3

Step-by-step explanation:

10 + 2(7 - 9x) = 5(2x - 12)

10 + 14 - 18x = 10x - 60

24 - 18x = 10x - 60

+60                 +60

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

84 - 18x = 10x

     +18x    +18x

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

84 = 28x

/28    /28

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

3 = x

3 0
2 years ago
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vodomira [7]

Answer:

For the first question it is 2.

2 x 2 = 4

5 x 2 = 10

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The second question is -2

-2 x -2 = 4

5 x -2 = -10

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Step-by-step explanation:

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