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2 years ago

ANYONE GOOD AT MATH NEED HELP ON THIS QUESTION?!!

Mathematics

1 answer:

Dvinal [7]2 years ago

7 0

Answer:

There are a total of twelve possible outcomes. This is because flipping a coin has two possible outcomes (either heads or tails) and rolling a number cube has 6 of them (1-6) so 2 times 6 is 12.

If you want to draw a tree diagram, first split your tree into two branches, one for heads and one for tails. Then, split both branches into 6 sub-branches each, so each branch has a full set of numbers from 1-6.

Or you can do it the other way around, first split your tree into 6 branches, then split all branches into 2 sub-branches each.

hope this helps :)

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The ages of two brothers are in the ratio two to three, but in eight years, the ratio of their ages will be three to four. What

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X = older brother
y = younger brother

Equation 1: x/y = 2/3 ⇒ x = 2y/3
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$( \frac{2y}{3} + 8) / y +8 = \frac{3}{4}$
$(2y + 24)/3 = y + 8 = \frac{3}{4}$
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$4 (2y + 24) = 3 (3y + 24)$
$8y + 96 = 9y + 72$
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The age of the older brother is 24.

$x = \frac{2y}{3} = \frac{2*24}{3}$
$x = \frac{48}{3}$
$x = 16$

The age of the youngest brother is 16.

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