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ArbitrLikvidat [17]

3 years ago

13

I need help from you guys I have to teach in class on friday and I'm in 7th grade what can I teach help you guys anything like p

roportional or ratios,etc...

2 answers:

anygoal [31]3 years ago

7 0

Have you learned about the Pythagorean theorem? a² + b² = c² . . . you should teach them about this.

Lelechka [254]3 years ago

5 0

I would teach the different formulas for 2d objects

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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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3 years ago

Find the volume of a cube that has a side length of:<br> 6x²y5

777dan777 [17]

Answer:

Are this form 1 question

8 0

3 years ago

Read 2 more answers

Math question please help me

Vinvika [58]

Answer:

C

Step-by-step explanation:

There are 140 women in the 5% sample. to find an estimate of all the women we can multiply but by 20. 5% x 20 = 100%. 140 x 20 = 2,800.

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2 years ago

The difference between the product of four and a number and six

Olin [163]

Answer- 4x-6
explain- i got it right

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3 years ago

The formula below gives the sum of the degrees, S, of the interior angles of a polygon. If n represents the number of sides, whi

Helga [31]

Answer:

The equation representing the value of <em>n</em> is, $n=\frac{S}{180^{\text{o}}}+2$ .

Step-by-step explanation:

The formula to compute the sum of the degrees, S, of the interior angles of a polygon is:

$S=(n-2)\times 180^{\text{o}}$

Compute the equation of <em>n</em> as follows:

$S=(n-2)\times 180^{\text{o}}$

$\frac{S}{180^{\text{o}}}=(n-2)$

$n=\frac{S}{180^{\text{o}}}+2$

Thus, the equation representing the value of <em>n</em> is, $n=\frac{S}{180^{\text{o}}}+2$ .

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3 years ago