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daser333 [38]
4 years ago
8

Find the area of a circle with a diameter of 26 cm. Give your answer in exact form.

Mathematics
1 answer:
ELEN [110]4 years ago
6 0
The area of a circle is calculated as pi*(r^2). Given a diameter of 26 cm, the radius is half the diameter, which is 26/2 = 13 cm.
Therefore the area is pi*(13^2) = 169 pi.

Another alternative formula for the area is pi*(d^2 / 4). Substituting d = 26 would give pi*(26^2 / 4) = pi*(676/4) = 169 pi, which is the same answer.

So the correct answer is C.
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Monk crossbred​ plants, which can have purple or white​ flowers, and obtained 639 plants with white flowers and 280 plants with
ira [324]

Answer:

The emperical probability of being a plant with white flower is

\dfrac{639}{919}\approx 0.695

The emperical probability of being a plant with purple flower is

\dfrac{280}{919}\approx 0.305

Step-by-step explanation:

There are

  • 639 plants with white flowers
  • 280 plants with purple flowers
  • 919 plants in total.

The <u>empirical probability</u> of an event is the ratio of the number of outcomes in which a specified event occurs to the total number of trials, not in a theoretical sample space but in an actual experiment.

The emperical probability of being a plant with white flower is

\dfrac{639}{919}\approx 0.695

The emperical probability of being a plant with purple flower is

\dfrac{280}{919}\approx 0.305

6 0
3 years ago
PLEASE HELP!!!!!!!!!!!!! (15 points)
Rainbow [258]
X = -2

Y = 2


Hope this helped
8 0
3 years ago
Read 2 more answers
F(x) = 384 + 48x<br> What is the zero of f(x)
frozen [14]

Answer:

its 22 .

Step-by-step explanation:

4 0
4 years ago
Read 2 more answers
Cody has $7. He wants to
Temka [501]
<h3>Answer:    (1,3)</h3>

=====================================================

Explanation:

Note that the two shaded regions overlap to form the darker shaded region. The point (1,1) is only in the green region, but not in the blue region. It needs to be in both regions for it to be a solution to the system. In contrast, the point (1,3) is on the boundary of the blue region and in the green region as well. It's a solution point because of this.

Points on the boundary are included because of the "or equal to" as part of the inequality sign. Hence the solid boundary lines rather than dashed boundary lines.

The solution (1,3) means that x = 1 and y = 3 pair up together. It says that Cody can buy x = 1 hotdog and y = 3 packs of peanuts so that he has at least 4 snacks, and he stays within the $7 budget.

Going back to (x,y) = (1,1) for a moment, this isn't a solution because x+y = 1+1 = 2 is not 4 or larger. In other words, he only buys 2 snacks here instead of 4 or more.

5 0
3 years ago
In 2011, a train carried 8% more passengers than in 2010. In 2012 , it carried 8% more passengers than in 2011. Find the percent
hjlf

Answer:

there was a 16% increase since 2010 to 2012

Step-by-step explanation:

lets say the train had 100 people on it in 2010 and in 2011 it had an 8% increase which then brings you to 8 plus 100 and you get 108.

Now in 2012 there was an increase 8%, so you will add 8 to your previous answer 108 and receive 116. So now there was 16 more passengers in 2012 than in 2010. Transfer the 16 passengers into 16% and you now have your answer.

3 0
3 years ago
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