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Rzqust [24]
3 years ago
15

5 positive integers are arranged in ascending order, as follows:

Mathematics
1 answer:
Olegator [25]3 years ago
5 0

Answer:

x = 16

Step-by-step explanation:

Since the numbers are in ascending order, x is the number with the highest value here.

From the arrangement, we can see that the median (the middle number) is the third number which is 9

The mean is the sum of the numbers divided by their count. So we set up the mean and equate to the median

We have this as;

(1 + 9 + 9 + 10 + x)/5 = 9

29 + x = 5(9)

29 + x = 45

x = 45-29

x = 16

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sergejj [24]

Answer:

a)  2.7 sec

b)  2.6 sec

c)  30.3 ft,  1.3 sec

Step-by-step explanation:

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3 0
3 years ago
The sum of 15 and three times a number is 27. Find the number.
ser-zykov [4K]

Answer:

x is a number that is multiple by 3

Step-by-step explanation:

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8 0
2 years ago
Using the quadratic formula to solve 7x^2-x=7, what are the values of x?
ycow [4]
Quadratic equation is x= \frac{-b {\pm} \sqrt{ b^{2}-4ac}}{2a} WHEN 
a x^{2} +bx+c=0

So, to make this true subtract 7 from each side. 

The equation is now 7x^{2} - x - 7 = 0 

Values for a, b, and c: a = 7, b = -1, c = -7 

Plug these variables into the quadratic equation. 

x= \frac{1 {\pm} \sqrt{ -1^{2}-4*7*-7}}{2*-7} 

Square -1 to get 1 and multiply -4 x 7 x -7 to get 196. 

x= \frac{1 {\pm} \sqrt{1+196}}{2*-7}

Multiply 2 x -7 to get -14, the denominator, and add 1 to 196. 

x= \frac{1 {\pm} \sqrt{197}}{-14} 

Since 197 is not a square number, and I don't know if you want to leave it in radical form or not, I will just because it's easier to understand. 

Hope this helps!
8 0
3 years ago
Final test need help on this question
8090 [49]

Answer:

x = 21 degrees

Step-by-step explanation:

Vertical angles are always congruent.

3x + 67 = 130

3x = 130 - 67

3x = 63

<u>x = 21</u>

8 0
3 years ago
The table shows the votes of 900 people
Alik [6]

Answer:

then what is it a full question

7 0
3 years ago
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