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Mila [183]
3 years ago
11

Which equation shows the best estimate for 4,310 ÷ 72 using compatible numbers?

Mathematics
2 answers:
kvasek [131]3 years ago
7 0
4310 / 72 = 59.86. The closest equivalent is 60, so the answer is B.
B. 4200 / 70 = 60
astraxan [27]3 years ago
3 0

Answer:

follow \: me \: please

Step-by-step explanation:

A sent telegram to b will you sell your car qoute lowest price B sent replay lowest price 50000 A sent second telegram ti B i agree to by car for 50000 B transfer refused to sell it there any contracy between A qnd B and can A Sue B for breach of contract give reason

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Which equation has no solution?
prohojiy [21]

Answer:

  • C.

Step-by-step explanation:

<u>C. </u>

  • 5/8x + 25 = 3/8x + 15 + 1/4x
  • 5/8x + 10 = 3/8x + 2/8x
  • 5/8x + 10 = 5/8x
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3 0
3 years ago
Find the 95% confidence interval for estimating the population mean μ
AVprozaik [17]

We first need to determine whether we are dealing with means or proportions in this problem. Since we are given the sample and population mean, we know that we are dealing with means.

Since we have one sample mean, this means we are creating a confidence interval for one sample (1 Samp T Int).

Normally we would check for conditions, but since this is not formulated as a "real-world scenario" type problem, it is hard to check for randomness and independence. Therefore, I will be excluding conditions from this answer.

<h3>Confidence Interval Formula</h3>

The formula for constructing a <u>confidence interval for means</u> is as follows:

  • \displaystyle \overline{x} \pm t^*\big{(}\frac{\sigma}{\sqrt{n} } \big{)}

We are given these variables:

  • \overline{x}=50
  • n=60
  • \sigma=10

Plug these values into the formula for the confidence interval:

  • \displaystyle 50\pm t^* \big{(}\frac{10}{\sqrt{60} } \big{)}

<h3>Finding the Critical Value (t*)</h3>

In order to find t*, we can use this formula:

  • \displaystyle \frac{1-C}{2}=A

Calculating the z-score associated with "A" will give us t*.

So, let's plug in the confidence interval 95% (.95) into the formula:

  • \displaystyle \frac{1-.95}{2}=.025

Use your calculator or a t-table to find the z-score associated with this area under the curve.. you should get:

  • t^*=1.96

<h3>Constructing Confidence Interval</h3>

Now, let's finish the confidence interval we created:

  • \displaystyle 50\pm 1.96 \big{(}\frac{10}{\sqrt{60} } \big{)}

We can calculate the confidence interval, using this formula, to be:

  • \boxed{(47.4697, \ 52.5303)}

<h3>Interpreting the Confidence Interval</h3>

We are 95% confident that the true population mean μ lies between <u>47.4697 and 52.5303</u>.

8 0
1 year ago
A study of telephones and the risk of brain cancer looked at a group of 469 people who have brain cancer. The investigators matc
Svetlanka [38]
This is an A. <span>observational study. They are observing the use of cell phones differs between people with or without cancer.

Happy studying ^-^</span>
8 0
3 years ago
A movie cost $3,254,107 to produce. what digit is in the hundred thousands place
erik [133]
The digit in the hundred thousands place is the 2
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Evaluate the expression below for x = 4 6 (x +7)
Drupady [299]

Answer:

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Step-by-step explanation:

6×(4+7)

6×11

=66

6 0
2 years ago
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