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Komok [63]
3 years ago
8

Bathroom tiles cost £1.65 each.Work out the total cost of 90 tiles.​

Mathematics
2 answers:
MatroZZZ [7]3 years ago
8 0

Answer:

£144.00

Step-by-step explanation:

1.60 x 90 = 144

Hope this Helps (✿◡‿◡)

xenn [34]3 years ago
8 0

Answer:

£148.50

Step-by-step explanation:

you first have to change £1.65 into a whole number

165×90=14850

14850 × 100 = 148.50

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The probability of winning a certain lottery is 1/77076 for people who play 908 times find the mean number of wins
Alex73 [517]

The mean is 0.0118 approximately. So option C is correct

<h3><u>Solution:</u></h3>

Given that , The probability of winning a certain lottery is \frac{1}{77076} for people who play 908 times

We have to find the mean number of wins

\text { The probability of winning a lottery }=\frac{1}{77076}

Assume that a procedure yields a binomial distribution with a trial repeated n times.

Use the binomial probability formula to find the probability of x successes given the probability p of success on a single trial.

n=908, \text { probability } \mathrm{p}=\frac{1}{77076}

\text { Then, binomial mean }=n \times p

\begin{array}{l}{\mu=908 \times \frac{1}{77076}} \\\\ {\mu=\frac{908}{77076}} \\\\ {\mu=0.01178}\end{array}

Hence, the mean is 0.0118 approximately. So option C is correct.

4 0
3 years ago
What is the correct evaluation of 4x2 + 4x - 2y2 +3y, when x is equal to -2 and y is equal to 3?
____ [38]

Answer:

-1

Step-by-step explanation:

This all comes down to the substitution. I am assuming that (4x2) is meant to be 4x^2 so I will solve as that.

4(-2)^2 = 4(4) = 16

4(-2) = - 8    

-2(3)^2 = -2(9) = -18

3(3) = 9

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7 0
2 years ago
please help! find the scale factor and ratio of perimeters for a pair of similar octagons with areas 64ftsq and 81ftsq. i need t
kati45 [8]

Answer:

the scale factor and the ratio of their perimeters is 8/9

Step-by-step explanation:

k^2=area 1/area 2

k^2=64/81

=square root if k^2=square root of 64/81

=<u>k</u><u>=</u><u>8</u><u>/</u><u>9</u>

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2 years ago
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Anna007 [38]

Answer:

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Step-by-step explanation:

8 0
3 years ago
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The total cost of a $70.42 meal after a 20% tip<br> $
egoroff_w [7]

Answer:

$84.50

Step-by-step explanation:

5 0
3 years ago
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