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kakasveta [241]
3 years ago
7

How to do the foil method to solve (2r+3s)(2r-s)

Mathematics
1 answer:
lana [24]3 years ago
5 0
(2r+3s)(2r-s)=4r^2-3s^2+6rs-2rs=4r^2-3s^2+4rs
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Does the angle have to be
Studentka2010 [4]

Answer:

Number 4

Step-by-step explanation:

Side-Angle-Side, it has to be between the two sides.

6 0
2 years ago
Read 2 more answers
What is the area of a regular hexagon (6 sides) whose
Ganezh [65]

Step-by-step explanation:

With reference to the regular hexagon, from the image above we can see that it is formed by six triangles whose sides are two circle's radii and the hexagon's side. The angle of each of these triangles' vertex that is in the circle center is equal to 360∘6=60∘ and so must be the two other angles formed with the triangle's base to each one of the radii: so these triangles are equilateral.

The apothem divides equally each one of the equilateral triangles in two right triangles whose sides are circle's radius, apothem and half of the hexagon's side. Since the apothem forms a right angle with the hexagon's side and since the hexagon's side forms 60∘ with a circle's radius with an endpoint in common with the hexagon's side, we can determine the side in this fashion:

tan60∘=opposed cathetusadjacent cathetus => √3=Apothemside2 => side=(2√3)Apothem

As already mentioned the area of the regular hexagon is formed by the area of 6 equilateral triangles (for each of these triangle's the base is a hexagon's side and the apothem functions as height) or:

Shexagon=6⋅S△=6(base)(height)2=3(2√3)Apothem⋅Apothem=(6√3)(Apothem)2

=> Shexagon=6×62√3=216

8 0
2 years ago
Which is the standard form for this number 8.0077 B) 8.077 C) 8. D) 8.8
astraxan [27]
The answer is c because
1) d is wrong because if the question give 8.78
baru lah answer dia 8.8 mesti lebih dari 5 baru tambah 1 di depan
6 0
3 years ago
Solve 2^x^2+5x=1/16 without using logarithms. <br> quick plz 15 points
Marianna [84]

Answer:

x=-4, x=-1

Step-by-step explanation:

6 0
3 years ago
Lisa is working 20.4 hours this week. She earns $8.25 per hour. Estimate how much she will earn this week?
leonid [27]
Let's estimate 20.4 hours to 20 hours and 8.25 to 8

so 20 * 8

160 hours, roughly
4 0
3 years ago
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