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alexira [117]
3 years ago
9

WHOEVER GETS IT RIGHT GETS BRAINLIEST

Mathematics
1 answer:
Y_Kistochka [10]3 years ago
6 0
Ratio :
Poster : DVD = 72 : 6
( ÷ 9) 
Poster : DVD = 8 : 2/3 

DVD = 2/3 inches = 0.67 inches.

Answer: 0.67 inches (Answer D)
You might be interested in
Lunch break: In a recent survey of 655 working Americans ages 25-34, the average weekly amount spent on lunch was $43.5
Inga [223]

Using the Empirical Rule, it is found that:

  • a) Approximately 99.7% of the amounts are between $35.26 and $51.88.
  • b) Approximately 95% of the amounts are between $38.03 and $49.11.
  • c) Approximately 68% of the amounts fall between $40.73 and $46.27.

------------

The Empirical Rule states that, in a <em>bell-shaped </em>distribution:

  • Approximately 68% of the measures are within 1 standard deviation of the mean.
  • Approximately 95% of the measures are within 2 standard deviations of the mean.
  • Approximately 99.7% of the measures are within 3 standard deviations of the mean.

-----------

Item a:

43.5 - 3(2.77) = 35.26

43.5 + 3(2.77) = 51.88

Within <em>3 standard deviations of the mean</em>, thus, approximately 99.7%.

-----------

Item b:

43.5 - 2(2.77) = 38.03

43.5 + 2(2.77) = 49.11

Within 2<em> standard deviations of the mean</em>, thus, approximately 95%.

-----------

Item c:

  • 68% is within 1 standard deviation of the mean, so:

43.5 - 2.77 = 40.73

43.5 + 2.77 = 46.27

Approximately 68% of the amounts fall between $40.73 and $46.27.

A similar problem is given at brainly.com/question/15967965

8 0
3 years ago
Read 2 more answers
In the standard (x, y) coordinate plane, what is the distance, in coordinate units, between (-3, -2) and (5, 5)?
Sav [38]

Answer:

10.630

Step-by-step explanation:

\sqrt(x_{2}  -x_{1})^{2} + (y_{2} -y_{1})^{2}

\sqrt( 5-(-3)^{2} + (5- (-2)^{2}

(5 - ( - 3)^2 = 64

(5 - ( -2)^2 = 49

49 + 64

113

\sqrt113

10.630


I hope this helps

8 0
3 years ago
(х + 40)°<br> (2x + 20°<br> 3х<br> 6x"
kogti [31]

Answer:

Step-by-step explanation:

(х+40)°(2x+20°

3 0
2 years ago
100 IF U GET THIS RIGHT!
Mkey [24]
3/7 because that is the number being added to the zero in the equation
3 0
2 years ago
Read 2 more answers
Can someone help with geometry?
grin007 [14]

Answer:

SSS

Step-by-step explanation:

bc all the sides are congruent.

6 0
3 years ago
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