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lions [1.4K]
2 years ago
12

Suppose z is proportional to the square root of x. If z = 717 when x = 9, find the proportionality constant k.??

Mathematics
2 answers:
Dahasolnce [82]2 years ago
8 0

Answer:

  239

Step-by-step explanation:

Write the equation. Fill in the given values, and solve for the unknown,

  z = k√x

  717 = k√9

  k = 717/3 = 239

The constant of proportionality is 239.

-BARSIC- [3]2 years ago
5 0

Answer:

z =  \sqrt{x}  \\ invite \: constant \\ z = k \sqrt{x}  \\ 717 = k \sqrt{9}  \\  \frac{717}{ \sqrt{9} }  =  \frac{k \sqrt{9} }{ \sqrt{9} }  \\ k =  \frac{717}{3}  \\ k = 239

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7 0
3 years ago
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Kisachek [45]

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67 degrees

Step-by-step explanation:

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7 0
3 years ago
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3 years ago
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Vlada [557]

Answer:

x^2 -20x + 100

Step-by-step explanation:

How this works is that you multiply each number by every other number, so.

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Then you do a times x since a is the next number in the first pair. then you do a times b.

(* is the sign for multiplication for the sake of simplifying it and to be easier than doing something like x x x where you are multiplying x together with x.)

So in the expression (x + a)(x + b) you are basically doing

x * x            +         x * b           +        a * x        +          a * b

In your case, a is = to -10 and b is equal to -10

So your expression would be

x * x    +   x * -10    +    -10 * x     +    -10 * -10

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x^2 + (-20x)  + 100

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x^2 -20x + 100

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4 0
2 years ago
Round 4.75 to nearest whole decimal?
Vlad1618 [11]
4.75\approx4.8
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3 years ago
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