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Sedbober [7]
3 years ago
14

Solve the given equation. ( 1/5 )( 4/7 )x = 32/490 (x is and exponent) x= _____

Mathematics
1 answer:
Vikki [24]3 years ago
5 0
X= 4/7 because it would be

4/35x=16/245

which would be 28x=16

simplified it would be 4/7
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Rachel recorded the number of calls she made at work during the week:
Dmitry [639]

The chi-squared test statistic will be 3.11. The test statistic is contrasted with a predicted value based on the Chi-square distribution.

<h3>What is the chi-squared test statistic?</h3>

Finding the squared difference between the actual and anticipated data values, then dividing that difference by the expected data values, constitutes the test statistic.

The formula for the chi-squared test statistic is;

\sum \frac{(O_i-E_i)^2}{E_i } \\\\

Where,

\rm O_i is the observed value

\rm E_i is the expected value

The chi-square test statics is;

\rm( \frac{18-18}{18} )^2 +( \frac{14-18}{18} )^2 + (\frac{24-18}{18} )^2+( \frac{16-18}{18} )^2 \\\\ 0+ \frac{16}{18}+ \frac{36}{18} +\frac{4}{18}\\\\ \frac{56}{18} \\\\ 3.11

Hence, the chi-squared test statistic will be 3.11.

To learn more about the chi-squared test statistic refer;

brainly.com/question/14082240

#SPJ1

5 0
2 years ago
Please help! 45 points !!
NeTakaya

<u>Answer:</u>

A. 8.2 x 10^6

<u>Step-by-step explanation:</u>

To get what 4.1x10^3 is equal to you move the decimal point to the right three times. This leaves you with 4,100. To get what 2.0x10^3 is equal to, you move the decimal point to the right three times. This leaves you with 2,000. 4,100 x 2,000 is 8,200,000. Then move the decimal to the left until it is behind the 8. In order to do this, you would have to move the decimal point 6 times. So the final answer is 8.2 x 10^6.

PLEASE MARK BRAINLIEST

8 0
2 years ago
Read 2 more answers
A bag contains 112 red marbles and 100 green marbles. What percent of the marbles are red?
ahrayia [7]

Answer:

Step-by-step explanation:

Total marbles are 212

112/212 = 28/53

Approx. 52. 83%

5 0
3 years ago
Se van a repartir 3 cartulinas entre 4 niños de manera que le toque lo mismo y no sobre
iren2701 [21]

Answer:

3-4 no 4-3=1

Step-by-step explanation:

this is the anwers

4 0
2 years ago
What is the solution of 4 + StartRoot 5 x + 66 EndRoot = x + 10? x = –10 x = 3 x = –10 or x = 3 no solution
irga5000 [103]

This is a question that is not awnsable so your teachers need to get smarter

6 0
2 years ago
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