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3 years ago

Someone please help me answer this!!

Mathematics

2 answers:

marin [14]3 years ago

7 0

Answer:

c = 85 in is the answer.

Step-by-step explanation:

a = 36 in

b = 77 in

c = ?

According to the Pythagoras theorem,

a² + b² = c²

36² + 77² = c²

1296 + 5929 = c²

7225 = c²

c = 85 in

∴ c = 85 in is the length of the missing leg.

mixas84 [53]3 years ago

3 0

You can use the pythagorean theorem which is a^2 + b^2=c^2
36^2+77^2=c^2
1296+5929=c^2
C^2=7225
C=-_/7225
C=85

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Given :

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Answer:

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Step-by-step explanation:

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Probability that the pianist will be a boy and the alternate will be a girl?

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

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So, $P(\text{boy as pianist})$ is:

$P(\text{boy as pianist}) = \dfrac{2}{5}$

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Now, one boy is already chosen as pianist so Total number of cases = Total number of students left i.e. (5 - 1) = 4

$P(\text{girl as alternate}) = \dfrac{3}{4}$

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$\text{Required probability } = \dfrac{2}{5}\times \dfrac{3}{4} = \dfrac{3}{10} = \bold{30\%}$

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