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tresset_1 [31]
3 years ago
11

Simplify i^82 pls...thanks :)

Mathematics
2 answers:
Fofino [41]3 years ago
8 0
To simplify i^82, divide 82 by. the answer is 20 with remainder 2
Kruka [31]3 years ago
8 0

Answer:

-1

Step-by-step explanation:

I simplified the expression using the definition of an imaginary number i=√1

First I applied the exponent rule: a^{bc}=\left(a^b\right)^c

i^{82} = \left(i^2\right)^{41}

=\left(i^2\right)^{41}

Then, I applied the maginary number rule: \:i^2=-1

=\left(-1\right)^{41}

Then I used the exponent rule again: \left(-a\right)^n=-a^n,\:\mathrm{if\:}n\mathrm{\:is\:odd}

\left(-1\right)^{41}=-1^{41}

=-1^{41}

Sooo, 1^{41}=1, which equals =-1.

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3. Lines of symmetry divide figures into two equal parts.<br> True<br> False
Elan Coil [88]

Answer:

False

Step-by-step explanation:

You can have more than one line of symmetry to divide figures into more than two equal parts.

8 0
3 years ago
Which of the following is the fastest unit rate ( 1 mile = 1,760 yards = 5,280 feet)
4vir4ik [10]

Answer:

A. 30 miles per hour

Step-by-step explanation:

If you divide 5,280 feet by 1,760, you get a quotient of 3. Then you multiply 10 times 3 to get 30 miles.

4 0
3 years ago
Read 2 more answers
Help I will be marking brainliest!!!
Keith_Richards [23]
<h3>Answer:  A.  18*sqrt(3)</h3>

=============================================

Explanation:

We'll need the tangent rule

tan(angle) = opposite/adjacent

tan(R) = TH/HR

tan(30) = TH/54

sqrt(3)/3 = TH/54 ... use the unit circle

54*sqrt(3)/3 = TH .... multiply both sides by 54

(54/3)*sqrt(3) = TH

18*sqrt(3) = TH

TH = 18*sqrt(3) which points to <u>choice A</u> as the final answer

----------------------

An alternative method:

Triangle THR is a 30-60-90 triangle.

Let x be the measure of side TH. This side is opposite the smallest angle R = 30, so we consider this the short leg.

The hypotenuse is twice as long as x, so TR = 2x. This only applies to 30-60-90 triangles.

Now use the pythagorean theorem

a^2 + b^2 = c^2

(TH)^2 + (HR)^2 = (TR)^2

(x)^2 + (54)^2 = (2x)^2

x^2 + 2916 = 4x^2

2916 = 4x^2 - x^2

3x^2 = 2916

x^2 = 2916/3

x^2 = 972

x = sqrt(972)

x = sqrt(324*3)

x = sqrt(324)*sqrt(3)

x = 18*sqrt(3) which is the length of TH.

A slightly similar idea is to use the fact that if y is the long leg and x is the short leg, then y = x*sqrt(3). Plug in y = 54 and isolate x and you should get x = 18*sqrt(3). Again, this trick only works for 30-60-90 triangles.

4 0
3 years ago
After a 2 1/2 hour rainstorm, there are 5 inches of water in a bucket outside. What is the rate per inch?
xeze [42]

Answer:

2 inches per hour

Step-by-step explanation:

2 1/2 hours is equivalent to 150 minutes.

Set up a proportion; let x equal inches of rain

\frac{5}{150}=\frac{x}{60}

Cross multiply -> 150x=300

Divide both sides by 150 to get -> x=2

5 0
3 years ago
Which expression is the factorization of x² + 10x + 21?
Firlakuza [10]
The answer is (x+3)(x+7)
7 0
4 years ago
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