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elena-s [515]
3 years ago
7

How do you work out percentages

Mathematics
2 answers:
Aleks04 [339]3 years ago
7 0
Firstly, you must divide the subject total by 100. This will give you 1% of your subject. For example, if you are working out 10% of 4,500, divide 4,500 by 100 and you will have worked out 1% of 4,500---in this case, 45. Multiply your 1% answer by the percentage you wish to find out.
Shkiper50 [21]3 years ago
3 0
You take the decimal of say .48 and pull the it back so it would be 48% 
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Answer please thanks
Naddik [55]

Answer:

-37/6

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Two types of defects are observed in the production of integrated circuit boards. It is estimated that 6% of the boards have sol
aalyn [17]

Answer:

(a) 0.09

(b) 0.06

(c) 0.0018

(d) 0.9118

(e) 0.03

Step-by-step explanation:

Let <em>A</em> = boards have solder defects and <em>B</em> = boards have surface defects.

The proportion of boards having solder defects is, P (A) = 0.06.

The proportion of boards having surface-finish defects is, P (B) = 0.03.

It is provided that the events A and B are independent, i.e.

P(A\cap B)=P(A)\times P(B)

(a)

Compute the probability that either a solder defect or a surface-finish defect or both are found as follows:

= P (A or B) + P (A and B)

=P(A)+P(B)-P(A\cap B)+P(A\cap B)\\=P(A)+P(B)\\=0.06+0.03\\=0.09

Thus, the probability that either a solder defect or a surface-finish defect or both are found is 0.09.

(b)

The probability that a solder defect is found is 0.06.

(c)

The probability that both defect are found is:

P(A\cap B)=P(A)\times P(B)\\=0.06\times0.03\\=0.0018

Thus, the probability that both defect are found is 0.0018.

(d)

The probability that none of the defect is found is:

P(A^{c}\cup B^{c})=1-P(A\cup B)\\=1-P(A)-P(B)+P(A\cap B)\\=1-P(A)-P(B)+[P(A)\times P(B)]\\=1-0.06-0.03+(0.06\times0.03)\\=0.9118

Thus, the probability that none of the defect is found is 0.9118.

(e)

The probability that the defect found is a surface finish is 0.03.

6 0
3 years ago
a banana contains 105 calories.last week,brendan and lea ate a total of 14 bananas.how many calories does this represent?
Crank
Well if they ate a total of 14 bananas and each banana is 105 calories, that means that you have to multiply 105 calories by 14 bananas. The answer is 1470 calories.
8 0
3 years ago
Read 2 more answers
What is the mean of the following set of numbers 64 65 63 66 60 65 66 68 69 66 63
BaLLatris [955]
You add all those number together then divide the number you got by how many numbers there are and that's your answer, 61.1

edit : dont listen to me I didnt see the numbers 64 and 65, im sorry

7 0
3 years ago
Read 2 more answers
Algebraic expression the sum of 27 and twice the opposite of why
gogolik [260]

27 + 2×(-why)

matches your English expression.

4 0
3 years ago
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