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3 years ago

In a sale the price of a pair of shoes is reduced the shoes have a normal price of £24 the shoes have a sale price of $19.20

Mathematics

1 answer:

yaroslaw [1]3 years ago

8 0

Answer:

20%

Step-by-step explanation:

Step one:

given data

Normal price = £24

Sale price of $19.20

From the data above, the price has been marked down by a certain percent

Required

The percent mark down

Step two:

Percent mark down= Normal-sale/Normal*100

Percent mark down= 24-19.20/24*100

Percent mark down= 4.8/24*100

Percent mark down=0.2*100

Percent mark down=20%

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A new lawn has a perimeter of 278ft. And a width of 64ft. A bag of grass seed will cover 384ft of ground. How many bags of grass

Anit [1.1K]

Answer:

13 bags

Step-by-step explanation:

Area of the lawn: A=lw

w= 64 ft

P= 2(l+w)= 278 ft ⇒

l= 278/2- 64= 75 ft

A= 64*75= 4800 ft²

bags of seed required:

4800/384= 12.5 so 13 full bags needed

7 0

3 years ago

PLZ HELP!!!

Serggg [28]

the percent is 130% for the question

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3 years ago

) Determine the probability that a bit string of length 10 contains exactly 4 or 5 ones.

yanalaym [24]

Answer: 0.4512

Step-by-step explanation:

A bit string is sequence of bits (it only contains 0 and 1).

We assume that the 0 and 1 area equally likely to any place.

i.e. P(0)= P(1)= $\dfrac{1}{2}$

The length of bits : n = 10

Let X = Number of getting ones.

Then , $X \sim Bin(n=10,\ p=\dfrac{1}{2})$

Binomial distribution formula : $P(X=x)=^nC_x p^x q^{n-x}$ , where p= probability of getting success in each event and q= probability of getting failure in each event.

Here , $p=q=\dfrac{1}{2}$

Then ,The probability that a bit string of length 10 contains exactly 4 or 5 ones.

$P(X= 4\ or\ 5)=P(x=4)+P(x=5)\\\\=^{10}C_4(\dfrac{1}{2})^{10}+^{10}C_4(\dfrac{1}{2})^{10}$

$=\dfrac{10!}{4!6!}(\dfrac{1}{2})^{10}+\dfrac{10!}{5!5!}(\dfrac{1}{2})^{10}$

$=(\dfrac{1}{2})^{10}(\dfrac{10!}{4!6!}+\dfrac{10!}{5!5!})$

$=(\dfrac{1}{2})^{10}(210+252)$

$=(0.0009765625)(462)$

$=0.451171875\approx0.4512$

Hence, the probability that a bit string of length 10 contains exactly 4 or 5 ones is 0.4512.

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4 years ago

What’s the answer to the question down below

levacccp [35]

Any linear equation can be written as

y = mx+b

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b = 8 is the y intercept. It's the starting amount of snow. We start off with 8 inches of snow already.

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3 years ago

What expression is equivalent to this equation?

Oksi-84 [34.3K]

Answer:

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Step-by-step explanation:

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3 years ago

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