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Umnica [9.8K]
3 years ago
13

5 numbers that create the mean of 9​

Mathematics
1 answer:
Jlenok [28]3 years ago
8 0

Answer:

9,9,9,9,9

Step-by-step explanation:

Let the five unknown numbers be x

= \frac{x+x+x+x+x}{5} = 9

Simplify

\frac{5x}{5} = \frac{9}{1}

Cross-cancel common factor ; 5

5x\div 5 = x\\\\x = \frac{9}{1} \\\\x = 9

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Divide 114÷7 explain the anwser
bezimeni [28]
To get the answer you must see how many times 7 can go in 114
5 0
3 years ago
Read 2 more answers
Find the valid value(s) for x:<br> x2 +5x+6<br> = 1<br> x+3
-BARSIC- [3]

Answer:

x=-1

Step-by-step explanation:

x+3≠0

x≠-3

x²+5x+6=x+3

x²+5x+6-x-3=0

x²+4x+3=0

x²+x+3x+3=0

x(x+1)+3(x+1)=0

(x+1)(x+3)=0

x+3≠ 0

so x+1=0

x=-1

6 0
3 years ago
Sail with the equation by completing the square x^2+8x=-3
maxonik [38]

Answer:

The solutions are x=-4(+/-)\sqrt{13}

Step-by-step explanation:

we have

x^{2} +8x=-3

Complete the square. Remember to balance the equation by adding the same constants to each side

x^{2} +8x+16=-3+16

x^{2} +8x+16=13

Rewrite as perfect squares

(x+4)^{2}=13

square root both sides

x+4=(+/-)\sqrt{13}

x=-4(+/-)\sqrt{13}

5 0
3 years ago
Can any1 answer this?If u can i get it right i put brainliest :)
Vera_Pavlovna [14]
The top answer is the right answer

Hope this helps good luck
5 0
3 years ago
Work out x when the area is root 4 2^2 and angle C is 45 and ab are (x+2)(2x-3)
aleksandrvk [35]

Answer:

  • x = 2.41

Step-by-step explanation:

<u>Area formula:</u>

  • A = 1/2bh

<u>The height is:</u>

  • h = (x + 2)sin 45° = √2(x + 2)/2

<u>Substitute the area value an set an equation:</u>

  • 4√2 = (2x - 3)√2(x + 2)/2
  • (2x - 3)(x + 2) = 8
  • 2x² + x - 6 = 8
  • 2x² + x - 14 = 0
  • D = 1 + 4*2*14 = 113
  • x = (-1 + √113)/4 = 2.41 (rounded)    

Note. the second root ignored as negative

7 0
2 years ago
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