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s344n2d4d5 [400]
2 years ago
12

Select the correct answer.

Mathematics
1 answer:
mylen [45]2 years ago
3 0

Answer:

B

Step-by-step explanation:

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Find the area of a circle with radius, <br> r<br> = 5.99m.<br> Give your answer rounded to 2 DP.
GalinKa [24]

Answer: 112.72

Step-by-step explanation: We know that the formula for area of a circle is pi*r^2. Now we plug in the values. pi*5.99^2. Next we get rid of the exponent. 5.99*5.99 = 35.8801. Now we have pi*35.8801. Now if you are gonna use actual pi for this your answer would be 112.72065857. Round it to 2 decimal points and you have 112.72 . If you do 35.8801*3.14=112.663514 -> Round this and you have 112.66. So any of them would actually work but I would stick with 112.72.

3 0
3 years ago
Solve the multiple choice for number 6
12345 [234]

Answer:

I'm pretty sure it is A

Step-by-step explanation:

5 0
3 years ago
I need help please<br><br> I will give points and brainlest
Nastasia [14]

Answer:

  a. 2 7/9 miles

  b. 21.6 minutes

  c. 8 1/3 miles

Step-by-step explanation:

The rate at which Catlin runs can be determined from the graph by finding the coordinates of a grid point that lies on the line. The line goes through the origin, so the relationship between time and distance is proportional.

We see that the point (miles, minutes) = (1 2/3, 12) lies on the graph, so the contant of proportionality is ...

  k = y/x = 12/(5/3) = 36/5 = 7.2 . . . . minutes/mile

__

<h3>a.</h3>

The proportion can be written ...

  distance/(20 minutes) = (1 mile)/(7.2 minutes)

  distance = (20/7.2) miles = 2 7/9 miles

Catlin will run 2 7/9 miles in 20 minutes

__

<h3>b.</h3>

The proportion can be written ...

  time/(3 miles) = (7.2 minutes)/(1 mile)

  time = (3)(7.2 minutes) = 21.6 minutes

Catlin was running 21.6 minutes

__

<h3>c.</h3>

In 1 hour, Catlin will run 3 times as far as in 20 minutes. Using the result from part A, we find ...

  3(2 7/9 miles) = 8 1/3 miles 8 1/3 miles

Catlin will run 8 1/3 miles in one hour.

_____

<em>Additional comment</em>

Once we have a relationship between minutes and miles, we can write proportions with either of those numbers in the numerator or denominator. We find it convenient to put the unknown value in the numerator of a proportion, which is why the ratios are written differently in the different parts of the problem.

3 0
2 years ago
We're working on Area of a Triangles on Coordinate Grids what's the area of this triangle here? The screenshot attachment is the
Dahasolnce [82]

Answer:

11.5 square units

Step-by-step explanation:

It’s a 4 by 6 rectangle, so the total is 24.  Then subtract the three little triangles on the outside.  (Much easier than doing the main triangle).

1/2x1x4=2

1/2x1x6=3

1/2x3x5=7.5

2+3+7.5=12.5

24-12.5=11.5

4 0
3 years ago
Find the number of permutations of the first 10 letters of the alphabet, taking 3 letters at a time.
allsm [11]

Answer:

720

Step-by-step explanation:

The permutation looks like this for that set of data:

_{10}P_{3}

and the formula to solve it like this:

_{10}P_{3} =\frac{10!}{(10-3)!}

which simplifies down to

_{10}P_{3} =\frac{10!}{7!}

Since every number less than 8 in the numerator cancels out with the denominator, we have

_{10}P_{3}=10*9*8

which equals 720

4 0
3 years ago
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