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Sedbober [7]
3 years ago
15

A:B=3:4 and B:C =7:2 then find A:C? *​

Mathematics
1 answer:
Mazyrski [523]3 years ago
7 0

Answer:

21 : 8

Step-by-step explanation:

A:B=3:4

A/B = 3/4

A = 3/4 B..... (1)

B:C =7:2

B/C = 7/2

B = 7/2 C.... (2)

From equations (1) & (2)

A =  \frac{3}{4}  \times  \frac{7}{2} C \\  \\ A =  \frac{21}{8}    \\  \\  \frac{A}{C}  = \frac{21}{8} \\  \\ A :C = 21 : 8

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Answer:

area= 78.5 cm²

circumference= 31.4 cm

Step-by-step explanation:

\boxed{Area  \: of  \: circle= πr²}

Given that the radius is 5cm, r= 5. Substitute r= 5 and π as 3.14 into the equation:

Area of circle

= 3.14(5²)

= 78.5 cm²

\boxed{circumference \: of \:  circle =2πr }

Circumference of circle

= 2(3.14)(5)

= 31.4 cm

For another question on area of circle, you might want to check out this question here: brainly.com/question/14068861

8 0
3 years ago
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16 10

Step-by-step explanation:

4 0
4 years ago
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To fit between two Windows the width of a bookshelf must be no greater than 6 1/2 feet. Mrs. Aguilar purchases a bookshelf that
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4 years ago
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3 years ago
Lucy says
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No this statement is not true.

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\frac{774}{2}  = 387

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