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Dmitriy789 [7]
3 years ago
7

Find the value of x.

Mathematics
1 answer:
Lady_Fox [76]3 years ago
5 0

Answer:

Step-by-step explanation:

x = 61⁰

Reason: x + 29⁰ = 90⁰ ( right angles i.e the angles are perpendicular to one another)

x = 90⁰ - 29⁰

x = 61⁰

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A study of one thousand teens found that the number of hours they spend on social networking sites each week is normally distrib
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Given:

Sample Mean <span>= 30<span>
Sample size </span><span><span><span>= 1000</span></span><span>
</span></span></span>Population Standard deviation or <span><span><span>σ<span>=2</span></span><span>
</span></span>Confidence interval </span><span>= 95%</span>

to compute for the confidence interval

Population Mean or <span>μ<span><span>= sample mean ± (</span>z×<span>SE</span>)</span></span>

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<span><span>SE</span>=<span>σ<span>√n</span>= 30</span></span>√1000=0.9486

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</span></span><span>μ<span>=30±1.8594</span></span>

Upper Limit

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Lower Limit

<span>μ <span>= 30 − 1.8594 = <span>28.1406</span></span></span>

<span><span><span>
</span></span></span>

<span><span><span>answer: 28.1406<u<31.8594</span></span></span>

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ivanzaharov [21]
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6 0
2 years ago
Answer? I don’t know may I please have help
umka21 [38]

Answer:

1. y=kx

2. y=60

Step-by-step explanation:

y is directly proportional to x

y=kx

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Make K the subject of the formula first

K=y/x

K=30/6

k=5

When k is 5, x is 12, find y

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y=5×12

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7 0
2 years ago
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