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3 years ago

What is (-i)^5? A. 1 B. i C. -1 D. -i

Mathematics

2 answers:

zmey [24]3 years ago

8 0

Answer: D. -i

Step-by-step explanation:

Because....

Apply exponent rule : ( -a )^n = -a^n, n is odd
( -i ) ^5 = i^5
The final answer is i^5 or -i

* Hopefully this helps:) Mark me the brainliest:)!!

jenyasd209 [6]3 years ago

3 0

Answer:

I'm pretty sure that it's -i

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The sum of three numbers is 855. One of the numbers, x, is 50% more than the sum of the other two numbers. What is the value of

Snowcat [4.5K]

Answer:

The value of x = 513

Step-by-step explanation:

Let x, y, and z be the three numbers

Given

$x+y+z=855$

Assuming x be the number which is 50% more than the sum of the other two numbers.

i.e.

(150)% of (y+z) = 1.5(y+z)

y + z = x/1.5

As we know that

$x + y + z = 855$

substituting y + z = x / 1.5 in the equation

$x+\frac{x}{1.5}=855$

Multiply both sides by 1.5

$x\cdot \:1.5+\frac{x}{1.5}\cdot \:1.5=855\cdot \:1.5$

$1.5x+x=1282.5$

$2.5x=1282.5$

Divide both sides by 2.5

$\frac{2.5x}{2.5}=\frac{1282.5}{2.5}$

$x = 513$

Therefore, the value of x = 513

8 0

3 years ago

Please help!!!!

Solnce55 [7]

Answer:

c) ( $(6-\sqrt{12} )(6+\sqrt{12} ) = 24$

d) ( $(3+\sqrt{8} )(3-\sqrt{8} ) = 1$

Step-by-step explanation:

Step(i):-

Given that the binomial expression

( $(6-\sqrt{12} )(6+\sqrt{12} )$

Multiply

( 36 + 6√12 -6√12 -(√12)²)

= ( 36 -12)

= 24

c) ( $(6-\sqrt{12} )(6+\sqrt{12} ) = 24$

Step(ii):-

Given that the binomial expression

( $(3+\sqrt{8} )(3-\sqrt{8} )$

Multiply

= 9 - 3√8 + 3√8 -(√8)²

= 9 - 8

= 1

d) ( $(3+\sqrt{8} )(3-\sqrt{8} ) = 1$

8 0

3 years ago

Ryan is buying batteries for his remote control cars. Charge Zone batteries cost $15.80 for 20 batteries. Electrocell batteries

Montano1993 [528]

Answer:

Charge Zone

Step-by-step explanation:

If Charge Zone (CZ) costs 15.80 for 20, and Electrocell batteries (EB) costs 8.10 for 10 batteries, you would find the price and quantity amount by multiplying by two. 8.10x2= 16.20, which is more than CZ.

Therefore, CZ is of better value.

5 0

3 years ago

96 fl ounces equals how many pints

lisabon 2012 [21]

6 pints = 96 fl oz

Hope that helps!!! ;)

8 0

3 years ago

Read 2 more answers

How much candy corn is in the jar?

zimovet [89]

Answer:

about 115

Step-by-step explanation:

not sure y, but if its a 6 inch jar, and a bag of candy corn contains about 50 pieces it would roughly hold up to 100-120 pieces

5 0

2 years ago