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vladimir2022 [97]
2 years ago
7

Work out your perimeter of a semicircle with raduis 3cm give your answer in terms of pie

Mathematics
2 answers:
Marrrta [24]2 years ago
8 0

Answer:

18.84 cm

Step-by-step explanation:

P = 2 × pi × r

= 2 × 3.14 × 3cm

= 6cm × 3.14

= 18.84 cm

Thepotemich [5.8K]2 years ago
7 0

Answer:

9/2 π

Step-by-step explanation:

Perimeter = \frac{\pi r^2}{2} \\r = 3\:cm\\\\P = \frac{\pi \times 3^2}{2}\\ \\P = \frac{\pi \times 9}{2}\\ \\P = \frac{9 \pi}{2} \\\\P = \frac{9}{2} \pi

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Something on sale for $725. The original price was $1299. To the nearest tenth of a percent, what was the rate of discount?
ElenaW [278]

Answer:

44.2%

Step-by-step explanation:

Rate of discount = (difference in prices / original price) x 100

Difference in price = $1299 - $725 = $574

Original price = $1299

($574 / $1299) x 100 = 44.187837%

the tenth is the first number after the decimal place. To convert to the nearest tenth, look at the number after the tenth (the hundredth). If the number is greater or equal to 5, add 1 to the tenth figure. If this is not the case, add zero

the hundredth figure is 8, which is greater than 5. 1 would be added to the tenth figure.

So it becomes 44.2%

4 0
2 years ago
Considering the sign up fee and monthly membership fee for a gym the equation c=30m+25 can be used to represent the total cost o
Naddik [55]

Answer:

$25

Step-by-step explanation:

Cost  = 30 x months  +  25

Every month you will pay 30$

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7 0
2 years ago
What is the value of y that satisfies the equation below? y= 12 3A3 C 36 B4 D 63
denpristay [2]

Answer:

Step-by-step explanation:

B i think

5 0
3 years ago
If you make $3.80 an hour plus tips, what is your paycheck for the week if you worked 40 hours and made $250.00 dollars in tips?
lesya [120]

Answer:

$402

Step-by-step explanation:

Hello!

If you made 3.80 an hour and worked 40 we can multiply these to find the total amount you earned.

3.80 * 40 = 152

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The answer is $402

Hope this helps!

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