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Snowcat [4.5K]
3 years ago
15

Eight times the sum of 11 and a number is 123. Which equation below can be used to find the unknown number

Mathematics
2 answers:
Darya [45]3 years ago
8 0
The equation would be
8 * (11 + x) = 123

Anettt [7]3 years ago
6 0

Answer:

8(11+x) = 123,

Where, x = unknown number

Step-by-step explanation:

Let x be the unknown number,

Since, Sum of 11 and x = 11 + x

Eight times of the sum of 11 and x = 8 × sum of 11 and x

= 8(11 + x)

According to the question,

Eight times of the sum of 11 and x = 123

⇒ 8(11+x) = 123

Which is the required equation.

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Complete question :

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Answer:

0.75151

Step-by-step explanation:

Given that :

Mean weight (m) = 3.96kg

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Probability of average weight over 3.9

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Using the z relation :

Zscore = (x - m) / (σ / √n)

Zscore = (3.9 - 3.96) / (0.53 / √36)

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Using the Z probability calculator :

P(Z > - 0.679245) = 0.75151

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aliina [53]

Answer:

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