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Strike441 [17]
3 years ago
7

A photo album costs $10.49 before discount and tax.

Mathematics
1 answer:
Gemiola [76]3 years ago
7 0

Answer:

Total after tax and discount is $7.78

Step-by-step explanation:

(10.49×0.3)= 3.15

10.49 - 3.15 = 7.34

(7.34×0.06)= 0.44

7.34 + 0.44 = 7.78

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A group of 8 people are picking up litter along a 4 over 5 km length of road. Each person is assigned an equal section of the ro
zepelin [54]

You know that 1 km=1000 m, then the length of the road \dfrac{4}{5} km is \dfrac{1000}{5} \cdot 4=200\cdot 4=800 metres.

A group of 8 people are picking up litter along the road and each person is assigned an equal section of the road. The whole road has length 800 m, then for each person will be assigned 800:8=100 m of the road.

If you want to know the length of each part in km, then 1 m=0.001 km and 100 m =1 m·100=0.001 km ·100=0.1 km.

5 0
3 years ago
Use the figure below to find the measure of ∠1.
Dmitrij [34]

Answer:

I think it 85 because it looks the same as 4

Step-by-step explanation:

4 0
3 years ago
the area of asquare field is 2.25 hectares.find its perimeter in metres if hectare is qual to 10000square metres​
Sergio [31]

Answer:

Perimeter of the square field is 600 meters.

Step-by-step explanation:

Given:

Area of a square field = 2.25 hectares

1 hectare = 10000 m²

∴2.25 hectares =2.25\times10000 = 22500 m²

Now, let each side length of the square field be a meters.

∴ Area = a^{2}

⇒ 22500 = a^{2}

⇒ a=\sqrt{22500}=150 m

Now, perimeter of a square is given as, P = 4a.

Here, a=150 m.

∴ P=4\times150=600 m

Hence, the perimeter of the square field is 600 meters.

8 0
3 years ago
What is 1/3 * -1 - 4 ?
Feliz [49]

Answer:

Step-by-step explanation:

Did you mean (1/3)*(-1-4)?

If yes:

(1/3)*-5=

-5/3

or -1 2/3

Or did you mean ((1/3)*-1) -4?

If so:

(-1/3)-4

-4 1/3

or -13/3

5 0
3 years ago
Read 2 more answers
At Denver International Airport, 83% of recent flights have arrived on time. A sample of 12 flights is studied. (a) Calculate th
Aleks [24]

Answer:

10.69% probability that all 12 flights were on time

Step-by-step explanation:

For each flight, there are only two possible outcomes. Either it was on time, or it was not. The probability of a flight being on time is independent of any other flight. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

83% of recent flights have arrived on time.

This means that p = 0.83

A sample of 12 flights is studied.

This means that n = 12

Calculate the probability that all 12 flights were on time

This is P(X = 12).

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 12) = C_{12,12}.(0.83)^{12}.(0.17)^{0} = 0.1069

10.69% probability that all 12 flights were on time

8 0
3 years ago
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