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3 years ago

Find a rational number that that is between 9.5 and 9.7 explain why it is a rational?

Mathematics

2 answers:

hodyreva [135]3 years ago

6 0

Answer:

9.6

Step-by-step explanation:

One rational number can be 9.6

It is a rational because it has terminating decimal expansion

lisabon 2012 [21]3 years ago

3 0

Answer: 9.6

Step-by-step explanation: A rational number can be written as a ratio of two integers (9.6 can write as 96/10)

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Which rational number could be graphed between -3 and -4

Snezhnost [94]

Answer:

-3.5

Step-by-step explanation:

An example is -3.5.

3 0

3 years ago

Read 2 more answers

A new catalyst is being investigated for use in the production of a plastic chemical. Ten batches of the chemical are produced.

zzz [600]

Answer:

$CI=(66.54,78.46)$

Step-by-step explanation:

Given : A new catalyst is being investigated for use in the production of a plastic chemical. Ten batches of the chemical are produced. The mean yield of the 10 batches is 72.5% and the standard deviation is 5.8%. Assume the yields are independent and approximately normally distributed.

To find : A 99% confidence interval for the mean yield when the new catalyst is used ?

Solution :

Let X be the yield of the batches.

We have given, n=10 , $\bar{X}=72.5\%$ , s=5.8%

Since the size of the sample is small.

We will use the student's t statistic to construct a 995 confidence interval.

$\bar X\pm t_{n-1,\frac{\alpha}{2}}\frac{s}{\sqrt n}$

From the t-table with 9 degree of freedom for $\frac{\alpha}{2}=0.005$

$t_{n-1,\frac{\alpha}{2}}=t_{9,0.005}$

$t_{n-1,\frac{\alpha}{2}}=3.250$

The 99% confidence interval is given by,

$CI=72.5 \pm 3.25\frac{5.8}{\sqrt{10}}$

$CI=72.5 \pm 5.96$

$CI=(72.5+5.96),(72.5-5.96)$

$CI=(66.54,78.46)$

8 0

3 years ago

△HES ≅ △PBN, HE = 3.9 cm, SB = 0.9 cm, and NS = 4.5 cm<br><br> What is the length of ES ?

Natali5045456 [20]

ns +sb = 5.4 cm

sb = en so en can be plugged in for sb

therefor es = 5.4

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Factor this expression completely, then place the factors in the proper location on the grid. (Hint: First, factor using differe

Anna [14]

Answer: x= y =

Step-by-step explanation:

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How do you know the quotient of 639÷6 is greater than 100 before you actually divide

svp [43]

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