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aliina [53]
3 years ago
5

If z varies jointly with x and y, x = 2 and y = 2, z = 7. Find z when x = 4 and y = 8.

Mathematics
1 answer:
Wittaler [7]3 years ago
7 0

Answer:

56

Step-by-step explanation:

z varies jointly with x and y:

z = kxy

When x = 2 and y = 2, z = 7.

7 = k(2)(2)

k = 7/4

z = 7/4 xy

When x = 4 and y = 8:

z = 7/4 (4)(8)

z = 56

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Triangle sum (3x+1)^0+(10x-11)^0+(3x-2)^0=180
svetlana [45]

Answer:

  • x = 12
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  • 10x-11 = 109°
  • 3x-2 = 34°

Step-by-step explanation:

Perhaps you want to know the value of x or the measures of the angles?

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Simplifying the given equation, you get ...

  (16x -12)° = 180°

  16x = 192 . . . . . . . divide by °, add 12

  x = 12

  (3x+1)° = (3·12+1)° = 37°

  (10x-11)° = (10·12-11)° = 109°

  (3x-2)° = (3·12-2)° = 34°

x is 12, and the angle measures are 37°, 109°, 34°.

4 0
3 years ago
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katovenus [111]

Answer:

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Step-by-step explanation:

3 0
3 years ago
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Dmitrij [34]

Answer:

Suppose that the wholesale of a bike is A (A is the 100% in this case). If we have an increase of 30% for the sale price, we have the new price of:

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6 0
3 years ago
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when n=8
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thus the summation of the term will be:
Sn=(-4374+-1458+-486+-162+-54+-18+-6+-2)
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6 0
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MAVERICK [17]

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Step-by-step explanation:

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