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tester [92]
3 years ago
9

The radius of a circle is 9. Using π, which equation expresses the ratio of the circumference of the circle to the circle's diam

eter? A) C /9 = π B) C /18 = π C) C = 9π/r D) C = r /18π
Mathematics
2 answers:
Dafna1 [17]3 years ago
7 0
The formula of the circumference is C=
dsp733 years ago
4 0

Answer:

B) C÷18=π

Step-by-step explanation:

The formula of the π(pi) is :

pi(π)=Circumference(C) ÷diameter(d), where the diameter of the circle=2*radius =2*9=18

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Abraham is installing carpet in his bedroom. On the blueprints, Abraham's bedroom is 6 inches wide and 10 inches long. If the sc
erma4kov [3.2K]

Answer:

240 square feet

Step-by-step explanation:

Hello, I can help you with this

Step one

find the real scale

According to the data

scale is 1 in : 2 ft

also remember  1ft=12 inches

so

scale is 1in: 2(12 inches)

scale is 1 in :24 in

the purpose of use inches a unit in both sides is to eliminate the, the scale must be adimensional

so escales is

1:24  , this means, that a measure on the blueprint must be multiplied by 24 to know its real value

Step 2

with the escale find the real dimensions, you can use a rule of three

Abraham's bedroom is 6 inches wide

blueprint ⇔ bedroom

1 in ⇔ 24 in

6 in ⇔x

x=(6*24)/1

x=144 inches=12 ft

 Abraham's bedroom is  10 inches long

1 in ⇔ 24 in

10 in ⇔y

y=(10*24)/1

x=240 inches=20 ft

Step  3

find the area

the area is wide *long

area=x*y

area=12ft*20ft

area=240 square feet.

Have a good day

5 0
3 years ago
What is 2/8 x 4/5<br> a.6/40<br> b.8/40<br> c.6/13<br> d.8/13
Leya [2.2K]
The answer is B 8/40
5 0
3 years ago
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Please help me with the correct answer
Irina18 [472]

Answer:

50 books were sold

Step-by-step explanation:

there are 5 books in the Red Crow row, and each book is worth 10 sold.

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3 years ago
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Carla is arranging square patches of grass on her rectangular lawn her lawn is 10 yards wide and 3 and 1/2 yards long how many s
Paraphin [41]

Answer:

I don't know if this is correct but wouldn't it be 560?

Step-by-step explanation:

If you have 10 on one side, you divide 10 by 1/4 to get 40. So you need 40 blocks to fill one side, and 3 1/2 on the other only needs 14. 14*40=560.

8 0
3 years ago
the tens digit of a 2 digit number is twice the units digit. The sum of the digits is 12. Find the original number
Nataly [62]
<span>2x + x = 12 
=> x =12/3 =4 
so, original number is 84. </span>
7 0
3 years ago
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