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2 years ago

Name the ray in TWO different ways. M N P

Mathematics

1 answer:

Paha777 [63]2 years ago

4 0

MP
PM
Assuming your n is on a side

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Sina=3/5 find cos2a

yarga [219]

Answer:

$\huge \purple{\therefore \cos2a} \orange{= }\red{\frac{7}{25} }$

Step-by-step explanation:

$\because \cos2a =1 - 2 { \sin}^{2} a \\ \\ \therefore \cos2a =1 - 2 \bigg( { \frac{3}{5} }\bigg) ^{2} \\ \\\therefore \cos2a =1 - 2 \times \frac{9}{25} \\ \\\therefore \cos2a =1 - \frac{18}{25} \\ \\\therefore \cos2a = \frac{25 - 18}{25} \\ \\ \huge \purple{\therefore \cos2a} \orange{= }\red{\frac{7}{25} } \\ \\$

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2 years ago

Write 7/40 as a percent.

Archy [21]

Answer:

17.5%

Convert fraction (ratio) 7 / 40 Answer: 17.5%

Step-by-step explanation:

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2 years ago

Read 2 more answers

How do you say hi in chamoru?

kobusy [5.1K]

Answer:

Step-by-step explanation:

To say Hi in Chamoru you say, "Håfa Adai" (Chamorro for "Hello").

Hope this helped!

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2 years ago

What is the volume of a sphere with surface area of 25 pi yd squared?

kherson [118]

$\bf \textit{surface area of a sphere}\\\\ SA=4\pi r^2~~ \begin{cases} r=radius\\ \cline{1-1} SA=25\pi \end{cases}\implies 25\pi =4\pi r^2 \\\\\\ \cfrac{25\pi }{4\pi }=r^2\implies \cfrac{25}{4}=r^2\implies \sqrt{\cfrac{25}{4}}=r\implies \cfrac{\sqrt{25}}{\sqrt{4}}=r\implies \cfrac{5}{2}=r \\\\[-0.35em] ~\dotfill$

$\bf \textit{volume of a sphere}\\\\ V=\cfrac{4\pi r^3}{3}\qquad \qquad \implies V=\cfrac{4\pi \left( \frac{5}{2} \right)^3}{3}\implies V=\cfrac{4\pi \cdot \frac{125}{8}}{3}\implies V=\cfrac{\frac{500\pi }{8}}{~~\frac{3}{1}~~} \\\\\\ V=\cfrac{500\pi }{8}\cdot \cfrac{1}{3}\implies V=\cfrac{500\pi }{24}\implies V=\cfrac{125\pi }{6}\implies V\approx 65.45$

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2 years ago

The area of a square flowerbed is 1.21 square yards. What is the length of each side?

gregori [183]

Step-by-step explanation:

area of a square=a*a=a^2

1.21=a^2

a=√1.21

a=1.1yards

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2 years ago