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Who'd be better at speed answering? Datguy323 or some Helping Hand? (Not a serious question) Solve for the variables:
x^3+y^7=28\\x^3=27

User Aatwo
by
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2 Answers

0 votes

Answer: (3,1)

Explanation:

First, to find x, simply take the cube root of 27, or 3. Thus, x = 3.

Then, simply plug it in:


27+y^7=28\\Subtract(27)\\y^7=1\\y=1

Thus, y = 1

Hope it helps <3

p.s. for some reason, in a graphing calculator, it shows no solutions

Hope it helps <3

2 in a row!

User Shoreki
by
5.4k points
3 votes

Answer:

x = 3

y = 1

Explanation:

The equations are:


x^3+y^7 = 28

and


x^3 = 27

Putting second equation in the first one:

=>
27+y^7 = 28

Subtracting 27 to both sides

=>
y^7 = 28-27

=>
y^7 = 1

Taking power 7 to both sides

=> y = 1

Now,


x^3 = 27

Taking cube root on the both sides

x = 3

User Svannoy
by
5.9k points