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Butoxors [25]
3 years ago
10

What is the answer to (6d+5)-(2-3d ) with work shown

Mathematics
1 answer:
kolezko [41]3 years ago
3 0

Answer:

9d+3

Step-by-step explanation:

(6D+5)-(2-3D);next step I disributed the negative sign into parenthesis wil resulted in no paranthesis.

6d+5-2+3d

9d+3

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D

Step-by-step explaination:

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3 years ago
Y=log(x-3)<br><br>what would be the base?
timurjin [86]
By definition, if :

a^y = b

y = log_a b

<span>We highlight the following elements:

</span><span>a = Base of the logarithm;
b = logarithmand or antilogarithm
y = logarithm</span><span>

Therefore:

</span><span>Note that since the base was not specified, we know that it is equal to 10.
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y = log_a b
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3 years ago
Hello! Question.
Bumek [7]
If I’m analyzing the question correct, you would pay 912 in total
8 0
3 years ago
M=0.75d - 2 proportional or non proportional?
ArbitrLikvidat [17]

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Non proportional

Step-by-step explanation:

8 0
3 years ago
we believe that 42% of freshmen do not visit their counselors regularly. For this year, you would like to obtain a new sample to
Maksim231197 [3]

Answer:

A sample of 1077 is required.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

The margin of error is of:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

42% of freshmen do not visit their counselors regularly.

This means that \pi = 0.42

98% confidence level

So \alpha = 0.02, z is the value of Z that has a pvalue of 1 - \frac{0.02}{2} = 0.99, so Z = 2.327.

How large of a sample size is required?

A sample size of n is required, and n is found when M = 0.035. So

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

0.035 = 2.327\sqrt{\frac{0.42*0.58}{n}}

0.035\sqrt{n} = 2.327\sqrt{0.42*0.58}

\sqrt{n} = \frac{2.327\sqrt{0.42*0.58}}{0.035}

(\sqrt{n})^2 = (\frac{2.327\sqrt{0.42*0.58}}{0.035})^2

n = 1076.8

Rounding up:

A sample of 1077 is required.

3 0
3 years ago
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