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insens350 [35]
4 years ago
9

Raphael paid $652 for a camera during a 20% off sale. What was the camera's regular price? Please work the problem and show your

work so I can understand it better.
Mathematics
1 answer:
Charra [1.4K]4 years ago
5 0
The price the Rafael paid for the camera is 652 dollars which already has a discount which is 20%.
There are a lot of ways to solve it, however, I'll show you the easiest way.
=> 652 dollars is the 80% of the price since it lessen by 20%
=> 652 / 8 = 81.5 is the 10% of the price.
=> 81.5 * 10 = 815 dollars is the original price of the camera.
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Work out the area of this circle.
mylen [45]

→Answer:

50.3cm^2

→Step-by-step explanation:

Well the formula for the area of a circle is \pi r^2.

<u><em>→Given information</em></u>

Pi is 3.142

radius is 4 cm

answer must be rounded to the nearest tenth

____________________________________________________________

So now we have to plug in the given information into the following formula \pi r^2.

(3.142)(4)^2

So now we have to solve this formula using PEMDAS.

So 4 squared is 16 and 16*3.142 is 50.272cm^2.

The question clearly states the given answer must be rounded into the nearest tenth so 50.272 is 50.3 cm^2.

__________________I do hope this helps!__________________________

5 0
3 years ago
EI NHS de Evergreen está diseñando un nuevo jardín.
ladessa [460]

Answer:

Area= 2(x^2 + 4)

Perímetro=6x + 8

Step-by-step explanation:

Ancho = x

Longitud = 2x + 4

Area= ancho × longitud

Area= x × 2x + 4

Area= 2x^2 + 4

Area= 2(x^2 + 4)

Perímetro= ancho+ancho+longitud+longitud

Perímetro=2ancho + 2longitud

Perímetro=2(x) + 2(2x+4)

Perímetro=2x + 4x + 8

Perímetro=6x + 8

8 0
3 years ago
1. A community pool that is shaped like a regular pentagon needs a new cover for the winter months. The radius of the pool is 20
ludmilkaskok [199]
1)<span>960 square feet
</span>2) B. 25 cm ^2
The area of a regular pentagon can be found using the formula.
A=\frac{1}{4} \sqrt{5(5+2 \sqrt{5})} *s^2
s=side length
A≈960 square feet

The apothem of a square is half of the side length. 2.5*2=5.  5^2 = 25cm^2


7 0
3 years ago
Read 2 more answers
A sampling plan states that if 20 incoming bolts are checked and 2 or less defective bolts are discovered, the lot will be rejec
FinnZ [79.3K]

Answer: the probability of rejecting the lot is 0.68

Step-by-step explanation:

Assuming a binomial probability distribution, the formula for binomial distribution is expressed as

P(x = r) = nCr × q^(n - r) × p^r

Where

n = number of samples

p = probability that an event will happen.

q = probability that an event will not happen.

From the information given,

n = 20

If an incoming lot is 10 percent defective, it means that

p = 10/100 = 0.1

q = 1 - p = 1 - 0.1 = 0.9

If 2 or less defective bolts are discovered, the lot will be rejected. The probability of rejecting the lot would be

P(x lesser than or equal to 2)

P(x lesser than or equal to 2) =

P(x = 0) + P(x = 1) + P(x =2)

P(x = 0) = 20C0 × 0.9^(20 - 0) × 0.1^0 = 0.12

(x = 1) = 20C1 × 0.9^(20 - 1) × 0.1^1 = 0.12 = 0.27

(x = 2) = 20C2 × 0.9^(20 - 2) × 0.1^2 = 0.12 = 0.29

P(x lesser than or equal to 2) = 0.12 + 0.27 + 0.29 = 0.68

4 0
3 years ago
4/9 expressed as a percent is
Elan Coil [88]
44.44% is the answer because 4/9 = .4444444 so you would multiply by 100 to get the percent which is 44.44%
4 0
4 years ago
Read 2 more answers
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