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2 years ago

What is the area of this triangle?

Mathematics

1 answer:

Ludmilka [50]2 years ago

3 0

Answer:

area = 1/2 *base* height

= 1/2 * 12* 9

= 54 cm^2

right triangle...

Hope this helps...

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Step-by-step explanation:

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HOPE THIS HELPS

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TiliK225 [7]

Answer:

$\dfrac{9}{25}$

Step-by-step explanation:

Given that the bag contains black and red marbles.

Number of black marbles in the bag = 2

Number of red marbles in the bag = 3

Total number of marbles in the bag = Number of black marbles + Number of red marbles = 2 + 3 = 5

Let us have a look at the formula for probability of an event E, which can be observed as:

$P(E) = \dfrac{\text{Number of favorable cases}}{\text {Total number of cases}}$

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Now, the marble chosen at first is replaced.

Therefore, the count remains the same.

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Now, the <em>required probability</em> can be found as:

$P(\text{First red marble})\times P(\text{Second red marble}) = \dfrac{3}{5}\times \dfrac{3}{5} = \bold{\dfrac{9}{25} }$

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