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polet [3.4K]
3 years ago
7

greg spent 3 hours practicing his guitar . he spent the same amount of time practicing each of 4 songs. how many minutes did gre

g spend practicing each song?
Mathematics
1 answer:
umka21 [38]3 years ago
6 0
He spent 45 minutes on each song
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A 15 ft. telephone pole has a wire that extends from the top of the pole to the ground. The wire and the ground form a 42 angle.
erastovalidia [21]

The correct answer is A wire=22.4ft distance 16.7ft


5 0
3 years ago
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What is the annual interest rate if $1600 is invested for 6 years and $456 in interest is earned
sergij07 [2.7K]
Use the formula   i = p*r*t:
                                                               $456
$456 = $1600*r*6.  Solving for r, r = ----------------- = 0.0475, or 4 3/4%
                                                           ($1600)(6)
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3 years ago
Show all steps<br> question is in the photo.
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\\ \sf\longmapsto \sqrt{108x^2y^3}-\sqrt{12x^2y^3}+x\sqrt{75y^3}

\\ \sf\longmapsto \sqrt{2\times 2\times 3\times 3\times 3\times x\times x\times y\times y\times y}-\sqrt{2\times 2\times 3\times x\times x\times y\times y\times y}+\sqrt{5\times 5\times 3\times y\times y\times y}

\\ \sf\longmapsto 6\sqrt{3}xy\sqrt{y}-2\sqrt{3}xy\sqrt{y}+5\sqrt{3}xy\sqrt{y}

\\ \sf\longmapsto \sqrt{3}xy\sqrt{y}(6-2+5)

\\ \sf\longmapsto 9\sqrt{3}xy\sqrt{y}

5 0
3 years ago
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Plz do this question if you did I will very appreciated you. plz.​
Nastasia [14]

The area formula of a circle is r^{2} × π.

With that being said, we can solve both problems!

Starting with part A:

-The radius we know is 21cm. From there, we can substitute in our formula with the new value.

21^{2} x π

From there, we can square our radius:

(21 x 21) x π

(441) x π

And finally, we can multiply by pi to get our answer.

(441) x π

1385.44236023

Which rounded to the nearest tenth is 1385.4. Therefore, the area of the porthole is 1385.4 centimetres.

The second part can be followed with the same process, hopefully you understand the concept enough to where you're comfortable solving problems like this on your own. Feel free to reach out if you have any further trouble!

<em>Hope this helped! :)</em>

5 0
3 years ago
CAN SOMEONE HELP ME PLEASE ASAP!?
Viefleur [7K]

Answer:

axc is 90 degrees. hope that helps

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3 years ago
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