3 years ago

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Mathematics

2 answers:

natita [175]3 years ago

7 0

Answer:

Step-by-step explanation:

Juli2301 [7.4K]3 years ago

7 0

Answer:

B. 1 1/4 years.

Step-by-step explanation:

13 3/4 - 12 1/2

13 - 12 = 1 + 3/4 - 1/2 = 3/4 - 2/4 - 1/4

1 + 1/4 = 1 1/4

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If the radius of the circle is multiplied by a factor of 3, then the area of the circle is multiplied by a factor of

Oksi-84 [34.3K]

$\bf \textit{area of a circle}\\\\
A=\pi r^2\quad 
\begin{cases}
r=radius\\
-----\\
r=\stackrel{r\times 3}{3r}
\end{cases}\implies A=\pi (3r)^2
\\\\\\
A=\pi (3^2r^2)\implies A=9(\pi r^2)$

notice, if the original area was πr², then the new area has a factor in front of it, that much.

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3 years ago

Angles E and Fare in ration 2:5. If the sum of E+F=70, What are the

LenKa [72]

Answer:

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3 years ago

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