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solong [7]
3 years ago
10

Can you help me in this question?

Mathematics
1 answer:
scoundrel [369]3 years ago
7 0
I can’t see your upload pls upload again!! Thank u
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Help meeee with this questionnnnnnnnnn!!!!!!!!!!!!
Dafna1 [17]

Given:

The scale factor between two circles is \dfrac{2x}{5y}.

To find:

The ratio of their areas.

Solution:

We know that, all circles are similar.

The ratio of the areas of similar figures is equal to the ratio of squares of their corresponding sides or equal to the square of ratio of their corresponding sides.

The scale factor is the ratio of the corresponding sides.

Ratio of areas of circles = Square of scale factor between two circles

\text{Ratio of areas of circles}=\left(\dfrac{2x}{5y}\right)^2

\text{Ratio of areas of circles}=\dfrac{(2x)^2}{(5y)^2}

\text{Ratio of areas of circles}=\dfrac{4x^2}{25y^2}

Therefore, the correct option is D.

3 0
3 years ago
HELP ASAP (40 POINTS)
frez [133]

Answer:

c i think because the problem =-

-  \frac{1}{4}

4 0
2 years ago
2470.28277045 To 3 decimal places
jeka57 [31]

To run the these figures to 3 decimal places

you need to count from the digit after the decimal point until you reach the 3rd number which is 2

so now the answer is 2470.283

This is because the decimal point lies between 2 and 7 and since 7 is great than 5 we add 1 to the 2 making it 3

3 0
3 years ago
Read 2 more answers
HELP PLS I HABE BEEN STARING AT THUS QUESTION FOR SO LONG​
kari74 [83]

Answer:

56%

Step-by-step explanation:

Reducing the picture by 80% and then by 70% gives a reduction of 56%

70% of 80 = 0.7 × 80 = 56%

7 0
3 years ago
Help help help help help help
Orlov [11]
Answer: A. 12, 12, 36
I hope this helps you
8 0
3 years ago
Read 2 more answers
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