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Aleksandr [31]
2 years ago
8

The radius of the circle below is 22 mm. Calculate the area of the circle. Give your answer in mm² to 1 d.p.​

Mathematics
1 answer:
Snowcat [4.5K]2 years ago
6 0

Answer:

1520.7mm^2

Step-by-step explanation:

area of a circle= πr^2

area of the circle = 3.142×22^2

area of the circle= 3.142×22×22= 1,520.728

area to 1dp= 1520.7mm^2

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Develop a probability model for the spinner shown.<br> Will give brainliest!
krok68 [10]

Answer:

Suppose we roll a six-sided number cube. Rolling a number cube is an example of an experiment, or an activity with an observable result. The numbers on the cube are possible results, or outcomes, of this experiment. The set of all possible outcomes of an experiment is called the sample space of the experiment. The sample space for this experiment is \displaystyle \left\{1,2,3,4,5,6\right\}{1,2,3,4,5,6}. An event is any subset of a sample space.

The likelihood of an event is known as probability. The probability of an event \displaystyle pp is a number that always satisfies \displaystyle 0\le p\le 10≤p≤1, where 0 indicates an impossible event and 1 indicates a certain event. A probability model is a mathematical description of an experiment listing all possible outcomes and their associated probabilities. For instance, if there is a 1% chance of winning a raffle and a 99% chance of losing the raffle, a probability model would look much like the table below.

Outcome Probability

Winning the raffle 1%

Losing the raffle 99%

The sum of the probabilities listed in a probability model must equal 1, or 100%.

4 0
3 years ago
Use the formula, I = PRT, to find the time if | = $387.50, P = $1,550, and R = 12.5%
stiks02 [169]

Answer:

T = 2

Step-by-step explanation:

Take the given formulaer

I = PRT

And plug in the variables you know (I, P, R)

387.50 = 1,550(.125)T

(12.5% becomes .125 after you divide it by 100, because precents are really just fractions out of 100)

387.50 = 193.75T

T = 2

8 0
2 years ago
The cost of the tank and filter system is $280. The base of the tank is a square with a perimeter of 60 inches what is the side
Kaylis [27]

Answer:

The side length of of the base of the tank is 15 inches.

Step-by-step explanation:

We are given the following in the question:

Cost of the tank and filter system = $280

Perimeter of tank base = 60 inches

The perimeter of tank is in the shape of square.

We have to find the side length of the base of the tank.

Perimeter of tank base = Perimeter of square =

P = 4a\\\text{where a is the side of square}\\60 = 4a\\\Rightarrow a  = 15\text{ inches}

Thus, the side length of of the base of the tank is 15 inches.

4 0
3 years ago
Emma uses turquoise beads to make bracelets to sell at an event. The total amount Emma earns, y, is proportional to the number
NNADVOKAT [17]
<h3>The equation represents the total amount Emma earns at the  event is y = 10x</h3>

<em><u>Solution:</u></em>

Given that,

<em><u>The total amount Emma earns, y, is proportional to the number  of bracelets, x, she sells</u></em>

y \propto x\\\\y = kx -------- eqn\ 1

Where,

y is the total amount Emma earns

x is the number of bracelets

k is the cost of each bracelet

<em><u>Emma earns $10 for each sold bracelet</u></em>

Therefore, k = 10

Thus, eqn 1 becomes,

<h3>y = 10x</h3>

Thus the equation represents the total amount Emma earns at the  event is found

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3 years ago
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