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Tju [1.3M]
2 years ago
13

Sofia has been saving money to buy a new computer. For her birthday, Sofia’s mother gave her twice what she had already saved. N

ow she has $135.
How much money did Sofia have before her birthday ?
Mathematics
1 answer:
MAXImum [283]2 years ago
8 0

Answer:

67.5

Step-by-step explanation:

135/2=67.5

answer is $67.50

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7/8 of an hour is 52.5 minutes. 3/10 of 52.5 minutes is 15.75 minutes. They spent 15.75 minutes warming up and cooling down.

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3 years ago
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alisha [4.7K]

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eimsori [14]
I believe the correct answer here would be B. The values x=2 and y=5 make the equation true. The answer is not A, because the graph could also go through 3 and 6. It is not C because that is not the correct order. The answer is not D because D is absurd and does not make sense.
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3 years ago
If a normal distribution has a mean of 62 and a standard deviation of 12 what is the z-score for a value of 80
kap26 [50]

Answer with explanation:

\text{Mean}=\mu = 62\\\\ \text{standard deviation}=\sigma=12\\\\ \bar X=80\\\\Z_{score}=\frac{\bar X -\mu}{\sigma}\\\\Z_{score}=\frac{80-62}{12}\\\\Z_{score}=\frac{18}{12}\\\\Z_{score}=1.5

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2 years ago
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Answer:

\large \boxed{\sf non \ linear, \ non \ linear, \ linear, \ linear}

Step-by-step explanation:

Write the equations in the form y = mx + b

If the equation contains exponents then it is non-linear, if not then it is linear.

2xy = 3

This graph forms a curve so it is non-linear

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