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Ber [7]
4 years ago
8

Find the value of x that makes A || B.

Mathematics
1 answer:
jarptica [38.1K]4 years ago
6 0

Answer:

x = 20

Step-by-step explanation:

3x - 10 = x + 30

2x = 40

x = 20

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Compare the average score of a student at the beginning of a month and at the end of that month, if at first, it increased by 40
Leno4ka [110]

Answer:

122.5

Step-by-step explanation:

Let the student normal score be 100

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Hence score at the beginning =100+40 = 140%

Now before end score decreased by 25%

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Hence score at the end of month = 140-35 = 105

Average score for the month

= Total of scores of end and beginning month /2

= \frac{140+105}{2} \\=122.5

4 0
3 years ago
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What’s the answer ? i need to know to pass my AMDM class please !
kirill [66]

Answer:

225/4

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When you are trying to find the number to be added to a binomial of the form : x^2+bx in order to make it a perfect square trinomial, all you need to do is to use the square of half of the coefficient b. That is : (\frac{b}{2} )^2.

In your case this is: (\frac{15}{2} )^2=\frac{15^2}{2^2}=\frac{225}{4}

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The correct answer is 35
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