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Ivan
3 years ago
12

What is the proportion of 14/36 = 7/x . i need the answer quickly please

Mathematics
1 answer:
matrenka [14]3 years ago
3 0

Answer:

x = 18

Step-by-step explanation:

The scale factor between the two numerators are 1/2.

Scale factor

= numeratorANS / numeratorKNOWN

= 7/14

= 1/2

Multiply the denominator by the scale factor to find x.

x = 36 * 1/2

x = 18

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2) w₁= 3 - i w₂= -3  + i

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The root of a complex number is given by:

\sqrt[n]{z}=\sqrt[n]{r}(Cos(\frac{\theta+2k\pi}{n}) + i Sin(\frac{\theta+2k\pi}{n}))

where:

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θ: is the angle of the complex number to the positive axis x

n: index of the root

1) z = 15 − 8i  ⇒ r=17 θ= -0.4899 rad

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w₂=\sqrt{10}(Cos(\frac{ -0.6435+2\pi}{2}) + i Sin(\frac{ -0.6435+2\pi}{2}))= -3  + i

3) z = −3 + 4i  ⇒ r=5 θ= -0.9316 rad

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