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enyata [817]
3 years ago
6

5. This graph illustrates the solution to which inequality?

Mathematics
1 answer:
sveticcg [70]3 years ago
8 0

Answer:

B. x < 1

Step-by-step explanation:

Note that the point at x=1 shows an empty circle, this denotes "<"

If it were to show a solid circle, then the sign would become "≤"

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Increase 53.20 by 7%
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56.924

Step-by-step explanation:

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3 years ago
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In a new experimental teaching method, when students have questions in class, they send them to the instructor via a laptop comp
Anna007 [38]

Answer:

a)  (0.124, 0.435)

b) I am 95% confident that the proportion difference is between 0.124 and 0.435

Step-by-step explanation:

Given that:

For male students: number of male students (n_m) = 69, number who liked the new method (x) = 38

For female students: number of female students (n_f) = 73, number who liked the new method (x) = 20

a) The probability that a male student like the new method (P_1) is given as:

P_1=\frac{38}{69} =0.55

The probability that a female student like the new method (P_2) is given as:

P_2=\frac{20}{73} =0.27

c = 95%, α = 1 -c = 0.05

z_{\frac{\alpha }{2} }=1.96

the difference between the proportions of male and female students who like the new method better = P_1-P_2 ± z_{\frac{\alpha }{2} }\sqrt{\frac{P_1(1-P_1)}{n_m} +\frac{P_2(1-P_2)}{n_f}} =  0.55-0.27 ± 1.96\sqrt{\frac{0.55(1-0.55)}{69} +\frac{0.27(1-0.27)}{73}}  = (0.124, 0.435)

b) I am 95% confident that the proportion difference is between 0.124 and 0.435

7 0
3 years ago
Solve for C<br><br> C<br> — - 4.3 = 11.5 <br> 2
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Answer:

The correct answer is,

c = 31.6

7 0
3 years ago
Can someone please help me
jeka94

Answer:

A. 1200

Step-by-step explanation:

Speed in meter per minute

= (216*1000)/(3*60)

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If you buy six pens and one mechanical pencil, it will cost $9. If you buy four pens and two mechanical pencils, it will cost $8
xeze [42]

Use Substitution or Elimination

1. pick one equation and solve for a variable

6p + 1m = 9

1m = 9-6p

m = 9 - 6p/ 1

m= 9-6p

2. substitute m into one of the equations given

4p + 2 ( 9-6p) = 10

4p + 18 - 12p = 10

4p - 12p = 10 - 18

-8p = -8 (divide both sides by -8)

p = 1

3. Insert p=1 into any of the equations

6p+1m = 9

6(1)+1m =9

6 + 1m = 9

1m = 9-6

1m= 3

m = 3



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3 years ago
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