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vodomira [7]
3 years ago
15

Jenny bought a wok for £9.60 in a 20% off sale. What was the price of the wok before the sale?

Mathematics
1 answer:
emmasim [6.3K]3 years ago
4 0

Answer:

£12

Step-by-step explanation:

9.60 = 80% times y.

9.60 = 0.8y

Then, divide each side by 0.8 to get the equation in shape to solve for y.

y = 9.60/0.8

y=12

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What is the value of x<br><br> 2x=4
IrinaVladis [17]

Answer: x=0.5 or 1/2

Step-by-step explanation:

2/4=1/2

7 0
3 years ago
A radio disc jockey has 8 songs on this upcoming hour's playlist: 2 are rock songs, 4 are reggae songs, and 2 are country songs.
mart [117]

Answer:

\displaystyle  \frac{1}{28}

Step-by-step explanation:

we are given 8 songs

2 are <em>rock.</em><em> </em>4 are <em>reggae</em>, 2 are <em>country</em>

we want to figure out the probability of getting both reggae songs

notice that, they aren't replacing thus it's an independent probability

recall that,

\displaystyle \rm P(A  \:  \text{and} \: B) = P(A) \times P(B \mid A)

P(A) represents the chance of getting our subject first time and P(B|A) represents the chance of getting the same subject second time

let's figure out P(A)

we have 2 reggae songs

and total 8 songs

therefore

\displaystyle\rm P(A) =  \frac{2}{8}  =  \frac{1}{4}

let's figure out P(B|A)

since we took a reggae song before now we have only a reggae song

and total 8-1=7

therefore

\displaystyle  \rm P(B\mid A) =  \frac{1}{7}

Altogether

\displaystyle \rm P(A  \:  \text{and} \: B) = \frac{1}{4}  \times  \frac{1}{7}

simplify multiplication:

\displaystyle \rm P(A  \:  \text{and} \: B) = \frac{1}{28}

And we are done!

7 0
3 years ago
I am greater than 13.I am less than 20.I have 6 ones.​
Reptile [31]

Answer:

16

Step-by-step explanation:

grater than 13 less than 20

14,15,16,17,18,19

6 ones

16

7 0
3 years ago
An APD Police officer has to write at least 80 speeding
GenaCL600 [577]

Answer:

x=\geq80-27

Step-by-step explanation:

there is needed atleast 80 tickets and you've given 27 so you would need a minimum of 53 tickets to make the inequilaty true

6 0
3 years ago
Find the slope of the line that contains these points.(5,1) (-3,1)
shtirl [24]
Slope equals change in y divided by change in x.

m=(y2-y1)/(x2-x1)

m=(1-1)/(5--3)

m=0/8

m=0

The slope is zero.

So this is a horizontal line of the form y=1
3 0
3 years ago
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