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Lana71 [14]
2 years ago
6

Use the identity for the difference of two squares, a^2-b^2=(a-b)(a+b), and the imaginary number i to create an identity for the

sum of two squares. Show that the identity is true.
Mathematics
1 answer:
Sphinxa [80]2 years ago
6 0
Put me as brainliest ive tried i cant figure it out plzz

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HELP ME WITH THESE THANKS :)!
kvv77 [185]

Answer:

50; 72; 8; 57.9

Step-by-step explanation:

1. sqrt((30/2)^2 + (20)^2) = sqrt(15^2 + 20^2) = sqrt(225 + 400) = sqrt(625) = 25 (radius) * 2 = 50 (diameter)

2. 360 (degrees in a circle)/5 (sides in a pentagon) = 72 degrees

3. 360 (degrees in a circle)/x (sides) = 45 --> 360/45 = x --> 8 sides = x

4. sqrt(7^2 + (12/2)^2) = radius --> sqrt(49 + 36) --> sqrt85 * 2pi = circumference --> 57.9281062 = circumference --> 57.9

7 0
3 years ago
Fred is making two rectangular flower beds.
Setler [38]

Answer:

<h2>1620 kg</h2>

Solution,

Let the length and breadth of smaller rectangle be l and b.

Length and breadth of larger rectangle be 3L and 3 b.

Besides, depth is same in both beds.

As area of small rectangle=180

Area of larger rectangle:

3l \times 3b \\  = 9lb \\  = 9 \times 180 \\  = 1620 \: kg

Hope this helps..

Good luck on your assignment..

8 0
3 years ago
A pail holds 2 3/4 gallons of water. How much is this in cups?
Sever21 [200]
There are 16 cups in 1 gallon:
16 x 2.75 = 44 cups
3 0
2 years ago
Please help with this worksheet<br><br> real numbers
Rufina [12.5K]

I DO NOT KNOW JUST GIVE ME A SECOND.

6 0
3 years ago
If b2 + 2b − 24 = 0, and b &lt; 0, what is the value of b?
Effectus [21]

Answer: b = -6, 4

Step-by-step explanation:

Convert into factored form :

(b+6)(b-4)

Then make one of the terms 0.

3 0
3 years ago
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