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vodomira [7]
2 years ago
13

Simplify the complex number i^28 as much as possible.

Mathematics
1 answer:
ella [17]2 years ago
5 0

let's recall that i⁴ = 1 so then    i^{28}\implies i^{4\cdot 7}\implies (i^4)^7\implies (1)^7\implies 1

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Need help with this math
Rudiy27

10,171.07 pesos

To every US dollar, it equal 18.84 pesos.

7 0
4 years ago
a recent survey shows that 16% of college students have dogs and 38% have an HBO subscription. assuming these two events are ind
Nataly_w [17]

Answer: 0.939\ or\ 93.9\%

Step-by-step explanation:

Given

Survey shows that 16% of college students have dogs and 38% have HBO subscription

Probability that a random person have both is

\Rightarrow P_o=0.16\times 0.38\quad [\text{As both events are independent}]\\\Rightarrow P_o=0.0608

The probability that the random person has neither of the two is

\Rightarrow P=1-P_o\\\Rightarrow P=1-0.0608\\\Rightarrow P=0.939

3 0
3 years ago
Jenna manipulated the equation 4x + 7=10 by adding -7 to both sides.Which of the follolwing properties justifies this manipulati
elena-14-01-66 [18.8K]
The addition property of equality justifies this. You could also say that she simply subtracted 7, and then it would be the subtraction property of equality. This is the case because if you add or subtract (or multiply or divide) the same number on both sides of an equation, the equation will still be the same.


Hope it helps!
5 0
3 years ago
Solve the question below 77
Vadim26 [7]

Answer:

<em>The height of the monument is 124.8 ft</em>

Step-by-step explanation:

<u>Right Triangles</u>

The ratios of the sides of a right triangle are called trigonometric ratios. The tangent ratio is defined as:

\displaystyle \tan\theta=\frac{\text{opposite leg}}{\text{adjacent leg}}

The figure attached below shows the different distances involved in the problem. We heed to find the value of h, the height from Daniel's eyes. Then we'll add it to the 6 ft where his eyes are located from the ground.

Taking the angle of 68° as a reference:

\displaystyle \tan 68^\circ=\frac{h}{48}

Solving for h:

\displaystyle h=48\tan 68^\circ

Calculating:

h = 118.8 ft

The height of the monument is 118.8 ft + 6 ft = 124.8 ft

6 0
3 years ago
Please please please help I'm wayyyy behind and I need a REAL answer, please
erastovalidia [21]
It is easy, Salesman B
8 0
3 years ago
Read 2 more answers
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