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8090 [49]
3 years ago
8

Ernesto tried to determine the solution for the system of equations using substitution. His work is shown below.

Mathematics
2 answers:
AysviL [449]3 years ago
7 0
Step 3. he forgot to multiply 3 and 7.
storchak [24]3 years ago
3 0
Step 3 he forgot to multiply 3 by 7

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The metric ruler is divided into
Vilka [71]
Meters, centimeters, millimeters.
8 0
3 years ago
What is the solution to the inequality?<br><br> −4x−8&gt;−20<br> pls hurry
Sergeu [11.5K]

Answer:

x < 3

Step-by-step explanation:

−4x−8>−20

Add 8 to each side

−4x−8+8>−20+8

-4x> -12

Divide each side by -4, remembering to flip the inequality

-4x/-4 < -12/-4

x < 3

3 0
3 years ago
The following are the distances (in miles) to the nearest airport for 12 families. 6, 7, 8, 8, 16, 19, 23, 24, 26, 27, 34, 35 No
AveGali [126]

Using it's definitions, the five-number summary and the interquartile range for the data-set is given as follows:

  • Minimum: 6
  • Lower quartile: 8
  • Median: 21.
  • Upper quartile: 27
  • Maximum: 35
  • Interquartile range: 19

<h3>What are the median and the quartiles of a data-set?</h3>

  • The median of the data-set separates the bottom half from the upper half, that is, it is the 50th percentile.
  • The first quartile is the median of the first half of the data-set.
  • The third quartile is the median of the second half of the data-set.
  • The interquartile range is the difference of the third quartile and the first quartile.

This data-set has 12 elements, which is an even number, hence the median is the mean of the 6th and 7th elements, as follows:

Me = (19 + 23)/2 = 21.

The first quartile is the median of 6, 7, 8, 8, 16, which is the third element of 8.

The third quartile is the median of 23, 24, 26, 27, 34, 35, which is of 27. Hence the interquartile range is of 27 - 8 = 19.

The minimum is the lowest value in the data-set, which is of 6, while the maximum is of 35, which is the largest value in the data-set.

More can be learned about the five-number summary and the interquartile range at brainly.com/question/3876456

#SPJ1

4 0
2 years ago
-45+(-30)-90 the answer of that mathematics sum
Klio2033 [76]
The answer of
<span>-45+(-30)-90= -165

Hope this helps <3
</span> 
6 0
3 years ago
Read 2 more answers
What is the surface area of a rectangular prism with a height of 8 yd, length of 5.6 yd, and width of 2.3 yd?​
sammy [17]

Answer:

152.16 yd²

Step-by-step explanation:

2(8 x 5.6) + 2(8 x 2.3) + (2.3 x 8) = 152.16 yd²

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

4 0
3 years ago
Read 2 more answers
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