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marta [7]
3 years ago
5

From 12,000 graphing calculators produced by a​ manufacturer, an inspector selects a random sample of 550 calculators and finds

6 defective calculators. Estimate the total number of defective calculators out of the 12,000.
Mathematics
1 answer:
maria [59]3 years ago
3 0

Answer:

131

Step-by-step explanation:

Using proportion,

If Out of 550 calculators = 6 are defective,

Then out of 12000 calculators = ? are defective

\frac{12000 calculators}{550calculators} * 6

= 21.8 * 6

= 130.8 ≈ 131

∴ Approximately 131 calculators are defective

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24+4(3+1) I know the answer but I need to show my work can anyone show me how they got the answer cause the answer is 40 but I d
solong [7]
24 + 4(3 + 1)
= 24 + 4(4)
=24+ 16
= 40
6 0
2 years ago
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21 marbles out of N are blue; probability of getting a blue one = 30%
MissTica
Probability=\frac{desired}{total}
0.3=\frac{21}{N}
0.3N=21
N=\frac{21}{0.3}
N=70

There are 70 total marbles. 
4 0
3 years ago
Find the solution set to each inequality. Express the solution in set notation.
daser333 [38]

The solution to the inequality 6m + 2 > -27 is  m > -4.33

The solution to the inequality 8(p-6)>4(p-4) is  p > 8

The given inequality is:

6m  +  2  >  - 27

Subtract 2 to both sides of the inequality

6m  +  2 - 2  >  -27  -  2

6m   >  -29

Divide both sides by 6

\frac{6m}{6}> \frac{-29}{6}  \\m  > \frac{-29}{6}\\m > -4.83

For the inequality  8(p-6)>4(p-4)

Expand the inequality using the distributive rule

8p  -  48   >  4p  -  16

Collect like terms

8p  -  4p  >  -16  +  48

4p    >  32

Divide both sides of the inequality 4

\frac{4p}{4} > \frac{32}{4}\\p > 8

The solution to the inequality 6m + 2 > -27 is m > -4.33

The solution to the inequality 8(p-6)>4(p-4) is p > 8

Learn more here: brainly.com/question/15816805

3 0
3 years ago
Cassie is a half pound of sugar in her cabinet her cake recipe calls for two tenths of a pound of sugar how many cakes can she m
mamaluj [8]
The information's given in the question should be very minutely checked. Based on those given information's the answer to the question can easily be deduced.
Amount of sugar in the cabinet of Cassie = 1/2 pound
Amount of sugar required by Cassie to make her cake recipe = 2/10 pound
                                                                                                   = 1/5 pounds
Then
The number of cakes that Cassie can make = (1/2)/(1/5)
                                                                        = 5/2
                                                                        = 2 1/2
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7 0
3 years ago
14.6 as a mixed number
Sladkaya [172]
14 3/5 is the answer
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