The sum of the real numbers x and y is 15. Their difference is 9. What is the value of xy?

Mathematics

1 answer:

defon3 years ago

8 0

I hope this answer helps

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Solve the equation: -3x - 40 = 2x - 19 *

Anni [7]

Answer:

The answer is x= -21/5

Step-by-step explanation:

Step 1: subtract 2x from both sides

Step 2: add 40 to both sides

Step 3: Divide both sides by -5

Hope this helped

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3 years ago

Find all possible values for A, B and C

Aliun [14]

The sum of A and B can have no carry. If we assume A ≠ B ≠ C, then you can have ...

... (A, B, C) ∈ {(1, 2, 3), (2, 1, 3), (1, 3, 4), (3, 1, 4), (1, 4, 5), (4, 1, 5), (1, 5, 6), (5, 1, 6), (1, 6, 7), (6, 1, 7), (1, 7, 8), (7, 1, 8), (1, 8, 9), (8, 1, 9), (2, 3, 5), (3, 2, 5), (2, 4, 6), (4, 2, 6), (2, 5, 7), (5, 2, 7), (2, 6, 8), (6, 2, 8), (2, 7, 9), (7, 2, 9), (3, 4, 7), (4, 3, 7), (3, 5, 8), (5, 3, 8), (3, 6, 9), (6, 3, 9), (4, 5, 9), (5, 4, 9)}

7 0

4 years ago

What is the exact value of cos(–60º)?

Aloiza [94]

Answer:

The exact value of $cos(-60\°)=(1/2)$