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irinina [24]
2 years ago
6

let $abcd$ be a parallelogram such that $ab = 10,$ $bc = 14,$ and $\angle a = 45^\circ.$ find the area of the parallelogram.

SAT
1 answer:
kumpel [21]2 years ago
5 0

Answer:

                                     

Explanation:

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4 0
3 years ago
A political candidate has asked his/her assistant to conduct a poll to determine the percentage of people in the community that
Alexxandr [17]

Answer:

The size of the sample needed = 67.65

Explanation:

Given that :

The margin of error = 10% = 0.10

The confidence level = 90% = 0.90

Level of significance = 1 - 0.90 = 0.10

At ∝ = 0.10

Z_{\alpha/2}= Z_{0.10/2} = 1.645

Since the proportion of people that supported him/her is not given, we assumed p = 0.50

The margin of error formula can be expressed as:

M.O.E = Z_{\alpha/2} \times \sqrt{\dfrac{p(1-p)}{n}}

0.10 = 1.645 \times \sqrt{{\dfrac{0.5(1-0.5)}{n}

Squaring both sides; we have:

0.10^2 = 1.645^2 \times {\dfrac{0.5(1-0.5)}{n}

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n= 2.706025 \times \dfrac{0.25}{0.01 }

n = 67.65

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3 years ago
Depending on the study, it is sometimes necessary for psychologists to be deceptive. Please select the best answer from the choi
Stells [14]

Answer:

True

Explanation:

well I agree somehow though

6 0
3 years ago
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