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pogonyaev
3 years ago
15

The sound off siren company tests every fifth siren for sound quality and every eighth siren for mechanical quality. The daily o

utput is 350 sirens. What percentage is tested for mechanical quality? What percent is tested for both types of quality at the same time?
Mathematics
1 answer:
Feliz [49]3 years ago
3 0

Answer:

Kindly check explanation

Step-by-step explanation:

Given that:

Sound quality test = every fifth siren

Mechanical quality = every 8th siren

Daily output = 350 siren

Percentage tested for mechanical quality :

Number of siren tested for mechanical quality / total output

Number of siren tested for mechanical quality = (350 / 8) = 43. 75

= 43 sirens

% tested for mechanical quality :

(43 / 350) * 100%

0.12285 × 100%

= 12.29%

What percent is tested for both types of quality at the same time?

Number tested for both types simultaneously = 8

% tested for both types of quality :

(8 / 350) * 100%

0.0228571 × 100%

= 2.28571%

= 2.29%

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const2013 [10]

Answer:

y=12/5 (in decimal notation y=2.4)

Step-by-step explanation:

the value of 7y-2 = 10 more than 2y

7y-2 = 10+2y

7y-2y = 10+2

5y = 12

y = 12/5

y = 2.4

3 0
3 years ago
A data set consists of 2, 2, 3, 4, 5, 5, and 7. Then, 20 is added to the data set. The new value will have little effect on the
ale4655 [162]

Answer:

A data set consists of 2,2,3,4,5,5 and 7. Then, 20 is added to the data set. The new value will have the little effect on the median, but it will raise the mean significantly.

Step-by-step explanation:

Since, we all know that the measures of central tendency are:

  1. Arithmetic Mean
  2. Median
  3. Mode
  4. Geometric Mean
  5. Harmonic Mean

Let us define Arithmetic Mean and Median.

Arithmetic mean is the sum of observations divided by the total number of observations. It is denoted by (x bar).

On the other hand, median of a distribution is that value of the variable which divides it into two equal parts.

For Arithmetic Mean:

According to the question, when data set consists 2,2,3,4,5,5 and 7, the arithmetic mean for the given data = 4

After adding 20 the given data set, the mean will be = 6

For median:

When data set consists of 2,2,3,4,5,5 and 7, the median value will be the middle value of the distribution i.e. = 4

After adding 20 to the given data set, the median will be = 4.5

Here we can say that 20 is an outlier for the given data set.

Since mean has the significant effect of the outlier because it is based on all values but the median has lesser effects of the outlier as it is based only on middle values. So whatever outlier is added to median, it will not show particular changes.

Thus , a data set consists of 2,2,3,4,5,5 and 7. Then, 20 is added to the data set. The new value will have little effect on median, but it will raise the mean significantly.

6 0
3 years ago
The edges of a cube are 5 centimeters each and the diagonal of a face is approximately 7 centimeters. What is the approximate ar
Naddika [18.5K]

Answer:

C

Step-by-step explanation:

5x7=35. Unfortunately I can't show you a model to explain further.

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HELP ASAP!!!!!!!!!!!!!! WILL MARK BRAINLIEST PICTURES BELOW!!!!!!!!!!!!!!!!!!!!!!!!!
harkovskaia [24]

5. 6√3

6.  x = 10√3     y = 30

7. x = 34    y = 17√3

8. 30

9. SinA = 3/5       CosA = 4/5

10. Tan20 = 9/x

Multiply both sides by x to get it on the other side

x(tan20) = 9

Divide 9 by tan20 to get x.

x = 9/tan20

x = 24.7



4 0
3 years ago
I need the intervals please
serg [7]

Answer:

1. (-6, -5) to (-5, -4)

2. (-3, -4) to (-1, -1)

Step-by-step explanation:

Increasing intervals include the x- and y- points increasing.

PS: I don't really know how to present the answer so if you're gonna submit it for a test or smth pls improve on the formatting yourself based on the question (So sorry I didn't really understand the question about writing a list of intervals and separating them with a comma :P)

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