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Tanya [424]
3 years ago
9

Find the value of x

Mathematics
1 answer:
iVinArrow [24]3 years ago
4 0

Answer:

x = 121

Step-by-step explanation:

Let the measure of the altitude of the given triangle be h units.

By geometric mean theorem:

h =  \sqrt{23 \times x}  \\  \\ h =  \sqrt{23x}  \\  \\ now \: by \: pythagors \: theorem \\  \\  {(x + 11)}^{2}  =  {h}^{2}  +  {x}^{2}  \\  \\   \cancel{{x}^{2}}  + 22x + 121 =  {( \sqrt{23x} )}^{2}  +  \cancel{{x}^{2}} \\  \\ 22x + 121 = 23x \\  \\ 22x - 23x =  - 121 \\  \\  - x =  - 121 \\  \\ x = 121

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If the odds against an event are 3:5, then the probability that the event will fail to occur is
damaskus [11]

Answer:

3/8

Step-by-step explanation:

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odds = wanted outcomes / unwanted outcomes

Odds of 3:5 losing means 3 losing outcomes and 5 winning outcomes.

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3 0
2 years ago
Suppose that E and F are two events and that N(E and F)=300 and N(E)=730. What is P(F|E)?
marin [14]

Answer:

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Step-by-step explanation:

The formula of conditional probability is:

\displaystyle P(F|E)=\frac{P(E \cap F)}{P(E)}

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\displaystyle P(E \cap F)=\frac{N(E \cap F)}{N(U)}\\\displaystyle P(E)=\frac{N(E)}{N(U)}

Then plugging them into the formula of conditional probability we get:

\displaystyle P(F|E)=\frac{\frac{N(E \cap F)}{N(U)}}{\frac{N(E)}{N(U)}}

Then we simplify and we get:

\displaystyle P(F|E)=\frac{N(E \cap F)}{N(E)}

We just plug the given info and we get:

\displaystyle P(F|E)=\frac{300}{730}=\frac{30}{70}

3 0
3 years ago
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{3, 4.5, 5}</span>
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