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3 years ago

I^15 = (i feel dumb for not knowing but i hate the i stuff, please solve)

Mathematics

2 answers:

myrzilka [38]3 years ago

6 0

Answer:

Step-by-step explanation:

$i ^ {15}$

=> $i^{14}*i$

=> $(i^2)^7*i$

=> $(-1)^7 * i$

=> $(-1)*i$

=> $-i$

jekas [21]3 years ago

6 0

Answer:

Step-by-step explanation:

i² = -1

i¹⁵ = i²ˣ⁷⁺¹ = (i²)⁷•i¹ = (-1)⁷•i = -1•i = - i

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URGENT! WILL GIVE BRAINLIEST!!! IF CORRECT!

In-s [12.5K]

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Step-by-step process:
100%-25%=75%
therefore, they will cost 75% of the original price
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= $6.75

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3 years ago

Read 2 more answers

What number is equivalent to 15 and 25

Gwar [14]

Answer:

yo are you talking about like absolute value? then it's | -15 | and | -25 |

Step-by-step explanation:

3 0

3 years ago

If a TV costs $310 and you have to pay a 7% sales tax, how much tax will you have to pay?

Bumek [7]

You will have to pay $21.70

3 0

2 years ago

Read 2 more answers

Add the integers.<br><br> 1. -2 +(-5)<br><br> 2. -2 +(-2)<br><br> 3. -13 +9

Maru [420]

-7 because when it’s +(-) it’s always the same as the outside sign
-4 same thing explained above
-4

hope this helps

7 0

2 years ago

Choose all that correctly solve for x.

Tamiku [17]

Answer:

Options: A, B, and C correctly solve for x.

Step-by-step explanation:

A).

$\frac{5}{2} x$ = $\frac{15}{2}$

Multiplying both sides by 2 gives;

5x = 15

x = 15 ÷ 5 = 3

∴ This option correctly solve for x.

B).

x + $\frac{7}{2}$ = 7

x = 7 - $\frac{7}{2}$ = $\frac{14}{2} -\frac{7}{2} = \frac{7}{2}$

∴ This option correctly solve for x.

C).

x + 3 = $\frac{21}{5}$

x = $\frac{21}{5} - \frac{15}{5} = \frac{6}{5}$

But the option give x as 5/6 hence this option does not correctly solve for x.

D).

5x = 11/2

x = 11/2 ÷ 5 = 11/2 × 1/5 = 11/10

But the option gives x as 10/11 so it does not correctly solve for x.

8 0

3 years ago