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3 years ago

If i= the square root of -1, what is the value of i to the 3rd power

Mathematics

1 answer:

serious [3.7K]3 years ago

3 0

I^3 = i^(2+1) = i^2 x i -1 x i = -i

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Can some help me pls find the angle measure for each one

Marianna [84]

Answer:

1 = 140 2 = 70

Step-by-step explanation

1 is 140 because it is the same as 140 and 2 is 70 because it is the same angle as 70.

8 0

3 years ago

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According to the rational root theorem, what are all the potential rational roots of f(x)=5x^3-7x+11

Genrish500 [490]

Answer:

$\pm11,\pm1,\pm\frac{11}{5},\pm\frac{1}{5}$

Step-by-step explanation:

The given polynomial function is

$f(x)=5x^3-7x+11$

According to the Rational Roots Theorem, the ratio of all factors of the constant term expressed over the factors of the leading coefficient.

The potential rational roots are

$\pm\frac{11}{1}=\pm11$

$\pm\frac{1}{1}=\pm1$

$\pm\frac{11}{5}$

$\pm\frac{1}{5}$

4 0

4 years ago

In the data set below, what is the mean absolute deviation?

lbvjy [14]

Add the numbers and divide by 5 to get a mean of 6.4

8 - 6.4 = 1.6

4 - 6.4 = -2.4

7 - 6.4 = 0.6

8 - 6.4 = 1.6

5 - 6.4 = -1.4

Add the absolute value of each: 1.6 + 2.4 + 0.6 + 1.6 + 1.4 = 7.6

Divide by 5 = 1.52

1.5

3 0

2 years ago

The area of the triangle below is 8.91 square inches. What is the length of the base?

Studentka2010 [4]

Answer:

8.1 inches

Step-by-step explanation:

Area of a triangle = ½ × base × height = Area

Rearranged =

$\frac{area}{ \frac{1}{2} \times height}$

Base is the length by the way.

$\frac{8.91}{ \frac{1}{2} \times 2.2 }$

=8.1 inches

6 0

3 years ago

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How to solve this question please helpp!!!!!!<br><br><br> Q1. cos -1 ( - √3/2 )

Amiraneli [1.4K]

Answer:

cos( $\sqrt{\frac{3}{2} }$ ) or 0.339

Step-by-step explanation:

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3 years ago