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sergeinik [125]
3 years ago
11

What is the value of x

Mathematics
2 answers:
harkovskaia [24]3 years ago
7 0
Answer: x=37.8, you can solve by writing a proportion

Basile [38]3 years ago
7 0

Answer:

x = 37.8

31.5/15=2.1

2.1 x 18=37.8

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20) What is the slope of the line that is perpendicular to the line of the given equation?
kompoz [17]
Perpendicular lines have slopes that are opposite signs and reciprocals.
Example: If one line has a slope of 5/3, then the perpendicular slope is -3/5.

In your case, your first line has a slope of -1/5. The perpendicular slope will be positive and will be 5/1.

The slope of a line perpendicular to the given one is 5.
4 0
3 years ago
The average mark of candidates in an aptitude test was 128.5 with a standard deviation of 8.2.Three scores extracted from the te
Luba_88 [7]

Answer:

102

Step-by-step explanation:

We have the mean (m) 128.5 and the standard deviation (sd) 8.2, we must calculate the value of z for each one and determine whether or not it is an outlier:

z = (x - m) / sd

In the first case x = 148:

z = (148 - 128.5) /8.2

z = 2.37

In the second case x = 102:

z = (102 - 128.5) /8.2

z = -3.23

In the first case x = 152:

z = (152 - 128.5) /8.2

z = 2.86

The value of this is usually between -3 and 3, therefore when x is 102 it goes outside the range of the value of z, which means that this is the outlier.

3 0
3 years ago
How to get a square root of a given number​
bonufazy [111]

Answer:

See below

Step-by-step explanation:

The square root of a number is defined as \pm y=\sqrt[2]{x} where (\pm y)^{2} gives the original number. For example, \sqrt{4}=\pm2 because 2^{2}=2*2=4 and (-2)^{2}=-2*-2=4.

8 0
3 years ago
Read 2 more answers
Which graph represents the equation x=2?
Rus_ich [418]

Answer:

1)

Step-by-step explanation:

In the line that is the graph of equation x = 2, every ordered pair has 2 as its x-coordinate. That means it's a vertical line that passes through x = 2 on the x-axis.

Answer: 1)

4 0
3 years ago
Read 2 more answers
What's 84 divided by 7 show the work plz
Snowcat [4.5K]
Ok, this is what you do, 

      
7(^^^^^
      84
7 goes into 8 1 time so it would be this

      1
7(^^^^
      84
     - 7

and it leaves you with 14
   
    
     1
7(^^^^
       14
then how many time does 7 go into 14? 2 times

so it would be


      12
7(^^^^
       14
       -14
AND YOUR ANSWER IS 12.



7 0
3 years ago
Read 2 more answers
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