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vladimir1956 [14]
3 years ago
9

4b−3.2=3(2b−4) can you plz solve

Mathematics
1 answer:
evablogger [386]3 years ago
3 0

Answer:

4b-3.2=6b-12

12-3.2=6b -4b

8.8=2b

b=8.÷2

b=4.4

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Helen's house is located on a rectangular lot that is 1 1/8 miles by 9/10. Estimate the distance around the lot.
Evgen [1.6K]
You round 1 1/8 to 1 and 9/10 to 1 (since you are estimating) and then you add 1+1+1+1, which is 4 because to find perimeter you add the lengths and the widths together.
7 0
3 years ago
Five more than the quotient of a number and 3 equals 2.
MakcuM [25]

Answer:

\large\boxed{\dfrac{n}{3}+5=2\ or\ n:3+5=2}

Step-by-step explanation:

\dfrac{n}{3}+5=2\\\\\dfrac{n}{3}-\text{the quotient of a number}\ n\ \text{ and 3}\\\\...+5-\text{five more than}

If you want a solution:

\dfrac{n}{3}+5=2          <em>subtract 5 from both sides</em>

\dfrac{n}{3}+5-5=2-5

\dfrac{n}{3}=-3            <em>multiply both sides by 3</em>

3\!\!\!\!\diagup\cdot\dfrac{n}{3\!\!\!\!\diagup}=(3)(-3)\\\\n=-9

4 0
3 years ago
Find the sample size necessary in order to be 95% confident when determining the true mean weight within 2 units (EC2). Assume t
bogdanovich [222]

Answer:

(c) 43.

Step-by-step explanation:

Given:

Margin of error (E) = 2

Sample variance (s^{2}) = 44

Confidence level = 95%

The z- value at 95% confidence level is 1.96.

The sample using the provided information can be calculated as:

n=(\frac{z(s)}{E})^{2} \\n=\frac{z^{2} s^{2} }{E^{2} } \\n=\frac{1.96^{2} (44) }{2^{2} }\\n= 42.52\\n=43

Hence, the correct option is (c) 43.

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Answer:

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market 3,7

red centers 4,10

pool 6,6

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ice cream shop 5,4

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2 years ago
What is the purpose of Australians paying tax?
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Tax is money people and businesses pay to the Australian Government to provide services including: health. education. defence.
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3 years ago
Read 2 more answers
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