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Ivanshal [37]
3 years ago
15

X varies directly with y. If x is 16 when y is 20, find x when y is 80.

Mathematics
1 answer:
Taya2010 [7]3 years ago
5 0

Answer:

32

Step-by-step explanation:

16/20 reduces down to 2/5

set 2/5=x/80

cross multiply 160=5x

divide 32=x

check 2/5=32/80

32/80; 16/40; 8/20; 4/10; 2/5

yay 32 is the answer good luck :)

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3 years ago
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Given z=4+3i evaluate z​
DerKrebs [107]

Answer:

5

Step-by-step explanation:

Assuming we want to evaluate |z|, given that, z=4+3i.

Then, by definition of modulus,

|x + yi|  =  \sqrt{ {x}^{2} +  {y}^{2}  }

|4+ 3i|  =  \sqrt{ {4}^{2} +  {3}^{2}  }

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Therefore the modulus be of the given complex number is 5 units

5 0
3 years ago
PLEASE HELP. I'LL GIVE BRAINLIEST.
vova2212 [387]
<h2>Answer:</h2>

The answer is 16.

<h2>Step-by-step explanation:</h2>

Since the 8x is positive, the equation  must have y as a positive number.

Let's see this!

An easy way to complete the square if you have the constants for x2 and

But not the non-variable number is to divide the x constant, and then square it.

Example:

\frac{8x}{2} \\\\4^2=16\\

The last number must be 16. Let's check it.

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6 0
2 years ago
Find the measure of each bolded arc. Round to the nearest hundredth
vladimir1956 [14]

Answer:

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Step-by-step explanation:

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(You would get the value of θ, by subtracting 57 from 360)

(You would get r by dividing 26 by 2)

Now we can solve this;

s = (303/360) 2π(13)

s = 0.842 * 2π(13)

s = 0.842 * 0.283(13)

s = 68.7

Hope this helps!

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3 years ago
What is the quotient of 35, 520 ÷ 96?
Verdich [7]

Answer:

Hey there the answer is 370

Step-by-step explanation:

3 0
3 years ago
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