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Ierofanga [76]
3 years ago
12

7r^2=-70 -10v^2=-810

Mathematics
1 answer:
kipiarov [429]3 years ago
4 0

Answer:

Step-by-step explanation:

I'll focus on -10v^2=-810 and will aim to find the solution, v.  Dividing both sides by -10, we get v^2 = 81, so that v = ±9 (two roots).

The other equation, 7r^2 = -70, has no real solutions.

r^2 = -70 yields r = ±i√10 (two imaginary solutions)

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