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Hatshy [7]
1 year ago
11

O

Mathematics
1 answer:
Vadim26 [7]1 year ago
4 0

Step-by-step explanation:

we have a function, when for every valid x value we get exactly one y value (not 2 or more, not 0, but exactly 1).

x×7 = y⁴

7x = y⁴

y = 4th root(7x)

the 4th root is the square root of the square root.

so, we know, only positive x-values are valid.

but, even when restricting it to positive x-values, a square root as a 4th root (any even grade root) has a positive and a negative solution for the same x-value.

e.g.

x = 7³ = 343

7×343 = 2,401

the 4th root(2,401) = +7 and -7, as +7⁴ = 2,401, and -7⁴ = 2,401.

so, we have 2 different y-values assigned to most x-values (only exception is x=0), and this is therefore not a function.

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Step-by-step explanation:

What is the inverse of y=r? + 8?

I hope this help.

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3 years ago
-0.03x^2+1.53x=0 <br><br> how would i go about solving for x?
inna [77]

Answer:

x = 0, 51

Step-by-step explanation:

<u>→First, you need to factor out the GCF (Greatest Common Factor), which is -0.03x, like so:</u>

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<u>→Separate each, like so:</u>

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x - 51 = 0

x = 51

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