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Alla [95]
3 years ago
12

In right triangle ABC shown below, what is the length of BC?

Mathematics
1 answer:
belka [17]3 years ago
3 0
The answer would be 5.74 as you use the Pythagorean theorem formula c = square root of (a^2+b^2)
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The area of a circle is 81 ft 2 . What is the π circumference? Leave in terms of Pi.
KonstantinChe [14]

Answer:

10.2π

Step-by-step explanation:

Given data

Area of circle=  81 ft^2

Also, the expression for the area of a circle is

A=πr^2

substitute

81=3.142*r^2

r^2= 81/3.142

r^2= 25.77

square both sides

r= √25.77

r= 5.1

Also, the expression for the circumference is

C= 2πr

substitute

C= 2*π*5.1

C= 10.2π

Hence the circumference is 10.2π

7 0
3 years ago
Quiz Instructions
bazaltina [42]
I believe it would be dilated by 3/4

If you think of a rectangle, let’s say it is 8 by 4, the perimeter of this rectangle would be 24.

Now if you dilate the side values, you get 6 by 3 and the perimeter equals 18

So you then get 18/24 which is equal to 3/4

Hope this is right and makes sense! Have a good day!

7 0
3 years ago
What is the total surface area ?
ser-zykov [4K]

Answer:

The answer is 126.

Step-by-step explanation:

If you multiply 2*9 first, you get 18. Then multiply 18 by 7. The answer will be 126. I hope this helps.

8 0
3 years ago
Leena knits 10 rows in 12 min. At this pace, how long will it take her to knit the next 25 rows?
tatiyna
For 10 rows, she takes = 12 min.
So, for 1 row, she'll take = 12/10 

Now, for 15 rows, it would be: 12/10 * 25 = 12/2 * 5 = 60/2 = 30

So, Your Final Answer would be 30 minutes

Hope this helps!
7 0
3 years ago
Read 2 more answers
How do you solve this ? what do you do with the exponets ?
antiseptic1488 [7]
4/7 is the answer. 

I cant reall explain becuase it will take forever xD
6 0
3 years ago
Read 2 more answers
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