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3 years ago

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

Mathematics

2 answers:

Marrrta [24]3 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]3 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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A car moves with an average speed of 45 miles/hour. How long does the car take to travel 90 miles? A. 2 minutes B. 2 hours C. 45

svlad2 [7]

We know that distance = rate(time). We need to solve for time here.

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The car took 2 hours to travel 90 miles at a speed of 45 mi/hr

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3 years ago

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If a company uses $1,410 of its cash to purchase supplies, the effect on the accounting equation would be:

grin007 [14]

The above mentioned transaction will affect the Assets side of the accounting equation or the Assets side of the balance sheet

Since we use cash of $1,410 the cash account would be debited with $1,410. In other words cash will be reduced by $1,410

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4 years ago

Jimmy has to choose a coat and hat to wear outside. He has a choice of a red (R) or green (G) coat, and a choice of a blue (B) o

Andru [333]

Answer:

{GB,GY,RY,RB}

Step-by-step explanation:

Given : Jimmy has to choose a coat and hat to wear outside. He has a choice of a red (R) or green (G) coat, and a choice of a blue (B) or yellow (Y) hat.

To Find: What is the sample space for Jimmy's possible winter gear?

Solution :

Sample space : In probability theory, the sample space of an experiment or random trial is the set of all possible outcomes or results of that experiment.

To Form sample space

If he choose red coat(R) So, with that coat he can wear blue (B) or yellow (Y) hat.

So, sample space with red coat becomes {RY,RB}

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So, sample space with green coat becomes {GB,GY}

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3 years ago

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trasher [3.6K]

Answer: 2
5 1/6 + -3 1/6=
2
Say that 5+-3 is 2, which it is, and then just take away both of those 1/6 . Which leaves you with 2 because both of the 1/6’s cancel out.

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KengaRu [80]

(-54x^9/y^4)^2/3
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3 years ago

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