2 years ago

Find the domain of the relation R = {(4, 5), (6, 7), (8, 9)}

Mathematics

1 answer:

timama [110]2 years ago

5 0

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7w + 6 + 2w = (w + 2)

Sindrei [870]

Hey there!

The correct answer is $w = \frac{-1}{2}$

$7w + 6 + 2w = w + 2$ ~ Write the equation

$9w + 6 = w + 2$ ~ Simplify

$8w + 6 = 2$ ~ Subtract $w$ from both sides

$8w = -4$ ~ Subtract $6$ from both sides

$w = \frac{-1}{2}$ ~ Divide both sides by 8

Hope it helps and have a great day!

4 0

2 years ago

A builder buys bricks at the rate of $4.50 per brick for the first 10, $3.50 per brick for the next 10, and $2.50 for any additi

iogann1982 [59]

If the first 10 bricks come out at $ 4.5, I would be spending $ 45. The other 10 bricks come out at $ 3.5 so he would be spending $ 35. Therefore, he has $ 20 available to buy bricks at $ 2.5, which would be buying 8 additional bricks. Thus, in total, with $ 100, 28 bricks were purchased.