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Inga [223]
2 years ago
12

Help me it’s my exam test

Mathematics
2 answers:
lana66690 [7]2 years ago
4 0

Answer:

Im sorry but don't cheat.

Step-by-step explanation:

hodyreva [135]2 years ago
3 0

Answer: C July

Step-by-step explanation:

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If a,b,c are all non-zero numbers and a+b+c=0, prove that
Butoxors [25]

<em>Given - a+b+c = 0</em>

<em>To prove that- </em>

<em>a²/bc + b²/ac + c²/ab = 3</em>

<em>Now we know that</em>

<em>when x+y+z = 0,</em>

<em>then x³+y³+z³ = 3xyz</em>

<em>that means</em>

<em> (x³+y³+z³)/xyz = 3 ---- eq 1)</em>

<em>Lets solve for LHS</em>

<em>LHS = a²/bc + b²/ac + c²/ab</em>

<em>we can write it as LHS = a³/abc + b³/abc + c</em><em>³</em><em>/abc</em>

<em>by multiplying missing denominators,</em>

<em>now take common abc from denominator and you'll get,</em>

<em>LHS = (a³+b³+c³)/abc --- eq (2)</em>

<em>Comparing one and two we can say that</em>

<em>(a³+b³+c³)/abc = 3</em>

<em>Hence proved,</em>

<em>a²/bc + b²/ac + c²/ab = 3</em>

6 0
2 years ago
The sum of the reciprocals of two consecutive odd integers is 24/143. find the two integers.
nordsb [41]
Let one integer be x, the consecutive odd integer is x+2
reciprocals are 1/x and 1/(x+2)
1/x +1/(x+2)=24/143
make the denominators the same:
(x+2)/[x(x+2)] +x/[x(x+2)]=24/143
143(2x+2)=24(x)(x+2)
286x+286=24x²+48x
24x²-238x-286=0
use the quadratic formula: x=22 this doesn't work because 22 is not an odd number.
or x=-2.1666666666 (this is not an integer)

weird.
4 0
3 years ago
Find the probability of a student being 34 years old or younger. Express your answer as a percent
yarga [219]

Answer:

79%

Step-by-step explanation:

3 0
2 years ago
1. In the number 7563291 write down the column that the 5 is in
Tasya [4]

Answer:

  1. Hundred Thousands
  2. -4
  3. 90
  4. a-b
  5. 6/14 = 3/7
  6. 1204
  7. 3500 & 3600
  8. I am guessing but I am not sure on how to do this one. x=11
  9. 3/8(6)-1/6(8)=18/48-8/48=10/48=****5/24****
  10. 6.6 repeating
  11. 180-72=108-49=****59****
  12. 5,6,7,8,9
  13. No number 13
  14. 60%
  15. 3.5 or if adding 7% tax then it is 53.50
  16. 8 edges

8 0
2 years ago
How many cups is 9.16 fl oz
Stolb23 [73]
1.145 cup you’re welcome ! :)
Mark me as brainlist
7 0
3 years ago
Read 2 more answers
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