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NemiM [27]
3 years ago
15

Please help! I'll give Brainliest! 20 points!

Mathematics
1 answer:
trapecia [35]3 years ago
3 0

Answer:

  78

Step-by-step explanation:

The mean is the sum of the 5 numbers, divided by 5:

  µ = (9 + 18 + 27 + 30 + x)/5 = (84 +x)/5 = 16.8 +x/5

The median of a 5-number set will be the middle number. Depending on the value of x, the mean/median may be 18, x, or 27, so we have three possible equations for x.

  16.8 +x/5 = 18

  x/5 = 1.2 . . . . . subtract 16.8

  x = 6 . . . . . . . . multiply by 5

___

  16.8 +x/5 = x

  16.8 = 4/5x . . . . subtract x/5

  21 = x . . . . . . . . . multiply by 5/4

___

  16.8 +x/5 = 27

  x/5 = 10.2 . . . . . . subtract 16.8

  x = 51 . . . . . . . . . . multiply by 5

___

The sum of the possible values of x is ...

  sum = 6 + 21 + 51 = 78

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kifflom [539]

Answer:

-7°

Step-by-step explanation:

every hour the temperature dropped 3° so in 6 hours it would be -7° because 3x6 is 18 and 11-18 is -7

4 0
3 years ago
Write the equation of the line in slope-intercept form using y=mx+b​
Volgvan

Answer: y=100/500x

I didn't write the y-intercept on form because y-intercept is 0.

I hope you have a nice day

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3 years ago
Read 2 more answers
9th out 10 questions
Sloan [31]

The correct answer is 15.

This is because the relationship between x and y is y=3x, as can be verified by the other points in the table.

3 = 3(1), 6 = 3(2), 24 = 3(8).

When we plug in 5 for x into our equation, we get 3(5), which equals 15.

Therefore, your answer is 15.

Hope this helps!

3 0
3 years ago
The product of a particular number and a second value, which is given by the sum of 8 and the original number, is 65. What is th
Marina86 [1]

Given:

The product of a particular number is 65.

Second value is given by the sum of 8 and the original number.

To find:

The unknown number.

Solution:

Let x be the unknown number.

Then, second number = x+8

The product of a particular number is 65.

x\times (x+8)=65

x^2+8x=65

x^2+8x-65=0

Splitting the middle term, we get

x^2+13x-5x-65=0

x(x+13)-5(x+13)=0

(x-5)(x+13)=0

Using zero product property, we get

x-5=0 and x+13=0

x=5 and x=-13

So, the unknown number is either 5 or -13.

Therefore, the correct option is B.

8 0
3 years ago
PLEASE HELP ASAP!! ALGEBRA! PICTURE BELOW!
zubka84 [21]

Answer:

(y+2)=3/4(x+6) or (y-4)=3/4(x-2)

Step-by-step explanation:

Point-slope form : (y-y1)=m(x-x1)

slope = m =(y2 - y1)/(x2 -x1)

Point 1 (-6,-2), so x1= - 6, y1= -2

Point 2 (2, 4), so x2 = 2, y2 = 4

m=(4-(-2))/(2-(-6)) = 6/8 = 3/4

Point-slope form : (y-y1)=3/4(x-x1)

We can use any point. If we use point 1 we get

Point-slope form : (y+2)=3/4(x+6).

If we use point 2 we get

(y-4)=3/4(x-2)

5 0
4 years ago
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