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3 years ago

Need help finding formula and area

Mathematics

1 answer:

STatiana [176]3 years ago

8 0

Answer:

the area is 8.1cn

Step-by-step explanation:

you first dived the shape into 2 shapes a triangle and rectangular then you find the area of both shapes and add them up

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A certain club has 10 members, including Harry. One of the 10 members is to be chosen at random to be the president, one of the

devlian [24]

Answer:

The probability that Harry will be chosen as either as Secretary or as treasurer but not as president out of those 10 members will be $\frac{1}{5}$ .

Step-by-step explanation:

We have 10 members out of which one is Harry, we need to choose one of the 10 members as President, one to be as secretary out of the remaining 9, one as the treasurer of the remaining 8 members.

We want harry to be as either as secretary or as treasurer. so we will consider both the cases

Probability is given by = No of favorable outcomes/ Total no of outcomes

(1) Harry as secretary : If harry is to be chosen as secretary then he can't be a president or he cant be a Treasurer

As president = $\frac{1}{10}$

Not as president = $1 - \frac{1}{10}$ = $\frac{9}{10}$

Now he is selected for the secretary so he can't be selected as treasurer.

Not as treasurer = 1

Probability for chosen as secretary = $\frac{9}{10}*\frac{1}{9}*1$ = $\frac{1}{10}$

(2) Harry as treasurer : If harry is to be chosen as the treasurer so he can't be chosen as a President or as a Secretary.

Probability for not chosen as president = $\frac{9}{10}$

Probability for not chosen as secretary = $1-\frac{1}{9} = \frac{8}{9}$

Probability to be chosen as treasurer = $\frac{1}{8}$

Probability to be chosen as Treasurer = $\frac{9}{10}*\frac{8}{9}*\frac{1}{8}$ = $\frac{1}{10}$

Total probability for Harry to be chosen as either secretary or as treasurer will be = P(Secretary) +P(Treasurer)

= $\frac{1}{10} +\frac{1}{10} = \frac{1}{5}$

Therefore the probability that Harry will be chosen as either as Secretary or as treasurer but not as president out of those 10 members will be $\frac{1}{5}$ .

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3 years ago

The set of all outcomes that are not in the Event

Dmitrij [34]

Is this part of a question or is this the question if so include the whole question so we can have a better understanding of what you need help with

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4 years ago

PLEASE HELP WILL MARK WILL MARK BRAINLIEST THANK YOU SO MUCH

Umnica [9.8K]

Answer:

First figure out what the whole shapes degrees will be then subtract 97 and 66 then divided it partially by 3 do get your answers for them

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3 years ago

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Digiron [165]

A is the average mean

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3 years ago

Read 2 more answers

Given that y= 2* (power of X)

svetoff [14.1K]

A)
y=2^x

4^x=2^(2x)=y²

solution:
y=2^x hence y²=4^x

chek:
x=5 ⇒ y=2⁵=32
4⁵=1024
y₂=32²=1024

b)
8(4^x)-9(2^x)+1=0
8(2^(2x)-9(2^x)+1=0

2^x=t

8t²-9t+1=0
We solve the quadratic.
t₁=1/8 ⇒2^x=1/8
2^x=1/2³
2^x=2⁻³
x=-3

t₂=1 ⇒ 2^x=1 ⇒x=0

Solutions:
x=-3
x=0

5 0

3 years ago

Need help finding formula and area​

Need help finding formula and area