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kakasveta [241]
3 years ago
13

Help me please I forgot my notes at school

Mathematics
2 answers:
sukhopar [10]3 years ago
6 0
1/2 x 6 = 3
3 x 8 = 24
24/6 = 4
4 - 1 = 3

3 is your answer

hope this helps
natulia [17]3 years ago
4 0
Because of BIDMAS, we know to do the brackets first
so it would be 3 * 8 ÷ 6 - 1
Division and multiplication next, so 4 -1
Lastly, subtraction
3

I am not 100% sure this answer is right but this is system I was taught
Hope it helped
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seropon [69]

Remark

You can use a formula to get the right answer. Otherwise you will use a lot of paper adding 100 numbers together.

Givens

A = 1

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gavmur [86]

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Lelechka [254]

The age of Sari is 8 years.

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Explanation:

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xy=72

Since, the numbers x and y are consecutive integers and Justin is older, then, it can be written as,

x=y+1

Therefore, the two equations are xy=72 and x=y+1

<u>The ages of Sari and Justin:</u>

The ages of Sari and Justin can be determined by solving the two equations.

Let us solve the equations using substitution method.

Substituting x=y+1 in the equation xy=72, we have;

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Factoring the equation, we get;

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The value of y cannot be negative.

Thus, y=8 is the value of y.

Substituting y=8 in the equation x=y+1, we have;

x=8+1

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Thus, the value of x is 9.

Therefore, the age of Sari is 8 years and the age of Justin is 9 years.

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