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3 years ago

PLS HELP TYSMMMM <33333333333333333333333333

Mathematics

2 answers:

yaroslaw [1]3 years ago

4 0

54 ÷ (6 - 3) x 2

Explanation:
Use order of operations PEMDAS to check:
54 ÷ (6 - 3) x 2
= 54 ÷ 3 x 2
= 18 x 2
= 36

Please say if im correct

If im correct, mark me brainliest tysm!
Have a nice day
-SpaceMarsh

yawa3891 [41]3 years ago

3 0

Answer:

dvide 54 by 6 then the answer you get subrtact it by 3 then the answer you get multiply iy by 2 then thats will be your answer

Step-by-step explanation:

remember always use PEMDAS always add or subract wich ever comes first and if theres none of that then do Multiply or devide wich ever comes first ( btw your answer is ( 3 )

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You and a friend play a game where you each toss a balanced coin. If the upper faces on the coins are both tails, you win $1; if

oksian1 [2.3K]

Answer: The mean and variance of Y is $0.25 and $6.19 respectively.

Step-by-step explanation:

Given : You and a friend play a game where you each toss a balanced coin.

sample space for tossing two coins : {TT, HT, TH, HH}

Let Y denotes the winnings on a single play of the game.

You win $1; if the faces are both heads

then P(Y=1)=P(TT)= $\dfrac{1}{4}=0.25$

You win $6; if the faces are both heads

then P(Y=6)=P(HH)= $\dfrac{1}{4}=0.25$

You loose $3; if the faces do not match.

then P(Y=1)=P(TH, HT)= $\dfrac{2}{4}=0.50$

The expected value to win : E(Y)= $\sum_{i=1}^{i=3} y_ip(y_1)$

$=1\times0.25+6\times0.25+(-3)\times0.50=0.25$

Hence, the mean of Y : E(Y)= $0.25

$E(Y^2)=\sum_{i=1}^{i=3} y_i^2p(y_i)\\\\=1^2\times0.25+6^1\times0.25+(-3)^2\times0.5\\\\=0.25+1.5+4.5=6.25$

Variance = $E[Y^2]-E(Y)^2$

$=6.25-(0.25)^2=6.25-0.0625=6.1875\approx6.19$

Hence, variance of Y = $ 6.19

6 0

4 years ago

Solve the equation. 3.4 = –13.6 + (–3.4c) + 1.7c

cricket20 [7]

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4 years ago

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Diano4ka-milaya [45]

Answer:

Step-by-step explanation:

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3 years ago

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Pls help I have a test

CaHeK987 [17]

Answer:1373/448

Step-by-step explanation:

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A 28-story hotel building has 18,000 square feet of space for rooms per floor. The average room is 16 ft x 28 ft. How many rooms

Vladimir79 [104]

Answer:

1,120 rooms

Step-by-step explanation:

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4 years ago