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Furkat [3]
3 years ago
8

Select proportional or not proportional to correctly classify each pair of ratios. 8/20 and 20/80

Mathematics
2 answers:
Scorpion4ik [409]3 years ago
8 0

They are not proportinal

cross mulitiply and see if you get the same number on each side

8(80) = 20(20)

640= 400 Not equal

never [62]3 years ago
8 0

They are not proportional.

I took the test and i got it right so do not proportional.


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y = 3\sqrt{2} + 4

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Create 2 equations using values from the table to find a and b.

Using (0, 10), then

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a + b = 10 → (1)

Using (90, 4), then

4 = acos90° + b ( cos90° = 0 ), thus

b = 4

Substitute b = 4 into (1)

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Thus

y = 6cosx° + 4

When x = 45°, then

y = 6cos45° + 4 = 6 × \frac{\sqrt{2} }{2} + 4 = 3\sqrt{2} + 4

6 0
3 years ago
Read 2 more answers
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