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forsale [732]
3 years ago
14

Answer the sum correctly

Mathematics
1 answer:
Katyanochek1 [597]3 years ago
7 0

it would be 7 friends because it says at least.

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Can someone help :0 not sure how to solve but I'm doing algebra if that helps
Rus_ich [418]

Answer:<em>r = d/t</em>

Step-by-step explanation:

1. If we are solving for <em>r, </em>we need to have <em>r</em> on one side of the equation.

2. Divide by t on both sides = d/t=r

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Zielflug [23.3K]
  • 2moles of NaCl produced by 2 moles of NaClO_3
  • Let required moles be x .

\\ \bull\sf\longmapsto 2:2=3:x

\\ \bull\sf\longmapsto \dfrac{2}{2}=\dfrac{3}{x}

\\ \bull\sf\longmapsto \dfrac{3}{x}=1

\\ \bull\sf\longmapsto x=3mol

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3 years ago
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The formula for the surface area of a cylinder is SA= 2 pi r (h + r). What is the surface area of a cylinder when r = 3 centimet
Grace [21]

Answer:

if you google (surface area of a cylinder) it lets you input the radius and height and it gives your answer

Step-by-step explanation:

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3 years ago
The figure shows two triangles on a coordinate grid:
Firdavs [7]
OK I will answer give me a few minutes I’ll try to be fast and come back to you in the comment section
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How to solve the exponential equation for 3^k2 • 3^-k+2 = 81
wariber [46]

Answer:

k=2

Step-by-step explanation:

3^k*2 * 3^-k+2 = 81

Factor out 81 to be : 3^4

Rewrite the equation:

k*2 - k+2 = 4

k^2 - 2k = 4

Simplify : k+2 = 4

            <u>    - 2   - 2</u>

             k = 2

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