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Marianna [84]
3 years ago
11

3. Jada is making a scale model of the solar system. The distance from Earth to the

Mathematics
1 answer:
JulsSmile [24]3 years ago
5 0

Answer:

kitchen

Step-by-step explanation:

if a foot is 2.389 then i would be pretty far but not a block away

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Describe a way you can use graham crackers to demonstrate the division problem 3 divided by 1/4 . Include the result in your des
lesantik [10]
You can take 3 graham crackers. Break each into 4 pieces. Then, you will have 12 pieces. So 3 divided by 1/4 = 12. Hope it helps! :)
5 0
3 years ago
What is the Equation of a line that has a slope<br> of -3 passes to the point (4,-5)
ololo11 [35]

Answer:

y= -3x + 7:)

Step-by-step explanation:

Hope this helps!

4 0
3 years ago
Read 2 more answers
A random sample of 300 Americans planning long summer vacations in 2009 revealed an average planned expenditure of $1,076. The e
Rufina [12.5K]

Answer:

(1024.69,\ 1127.31)

Step-by-step explanation:

We know that the sample size was:

n = 300

The average was:

{\displaystyle {\overline {x}}}=1,076

The standard deviation was:

\s = 345

The confidence level is

1-\alpha = 0.99

\alpha=1-0.99\\\alpha=0.01

The confidence interval for the mean is:

{\displaystyle{\overline {x}}} \± Z_{\frac{\alpha}{2}}*\frac{s}{\sqrt{n}}

Looking at the normal table we have to

Z_{\frac{\alpha}{2}}=Z_{\frac{0.01}{2}}=Z_{0.005}=2.576

Therefore the confidence interval for the mean is:

1,076\± 2.576*\frac{345}{\sqrt{300}}

1,076\± 51.31

(1024.69,\ 1127.31)

This means that <em>the mean planned spending of all Americans who take long summer vacations in 2009 is between $ 1024.69 and $ 1127.31</em>

3 0
3 years ago
2 Mini Lesson: A wireless phone plan costs Eric $35 for a month of service during which he sent 450 text messages. If he was cha
mafiozo [28]

9514 1404 393

Explanation:

From your knowledge of the world, you know that ...

  • the cost of multiple items is the sum of their individual costs
  • multiplication can be used for repeated addition
  • utility fees are the sum of fixed fees and usage-related fees
  • for a phone plan, text message costs are a usage-related fee

The problem statement asks for the cost of a single text message. For the purpose of finding that value, it is convenient to represent it using the variable <em>t</em>. The problem statement says Eric was billed for 450 text messages, so we expect his usage-related fee to be 450t, the sum of the costs of 450 messages--using multiplication for the repeated sum.

The problem statement says Eric was billed 12.50 for fixed fees. So, we expect Eric's total bill to be ...

  fixed fees + usage-related fees = 12.50 + 450t

The problem statement says Eric's total bill was 35.00, so we assume that is the sum of the above-listed fees. That is, the two ways to express Eric's total bill are equal.

  12.50 +450t = 35.00

4 0
3 years ago
Solve the inequality and select all that make the inequality true. 8x−5 &gt;−11
VikaD [51]
Add 5 to both sides.  Then 8x > -6, and x > -3/4 (answer)
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3 years ago
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