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3 years ago

What is the inverse property of the complex number 9-4i

Mathematics

1 answer:

Zina [86]3 years ago

6 0

Answer:

when added to the original number, would equate to zero. Another term this may be known as is the additive identity. The additive inverse is simply:

(a + bi) = -(a + bi)

Given: 9 - 4i

-(9 - 4i) = -9 + 4i

Therefore, the answer is B.

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Cherie is jogging around a circular track. She

skelet666 [1.2K]

Answer:

Measure of minor angle JOG is $95.5^{\circ}$

Step-by-step explanation:

Consider a circular track of radius 120 yards. Assume that Cherie starts from point J and runs 200 yards up to point G.

$\therefore m JG = 200 yards, JO=120 yards$ .

Now the measure of minor arc is same as measure of central angle. Therefore minor angle is the central angle $\angle JOG = \theta$ .

To calculate the central angle, use the arc length formula as follows.

$Arc\:Length\left(s\right) = r\:\theta$

Where $\theta$ is measured in radian.

Substituting the value,

$200=120\:\theta$

Dividing both side by 120,

$\dfrac{200}{120}=\theta$

Reducing the fraction into lowest form by dividing numerator and denominator by 40.

$\therefore \dfrac{5}{3}=\theta$

Therefore value of central angle is $\angle JOG = \theta=\left(\dfrac{5}{3}\right)^{c}$ , since angle is in radian

Now convert radian into degree by using following formula,

$1^{c}=\left(\dfrac{180}{\pi}\right)^{\circ}$

So multiplying $\theta$ with $\left(\dfrac{180}{\pi}\right)^{\circ}$ to convert it into degree.

$\left(\dfrac{5}{3}\right)^{c}=\left(\dfrac{5}{3}\right) \times \left(\dfrac{180}{\pi}\right)^{\circ}$

Simplifying,

$\therefore \theta = 95.49^{circ}$

So to nearest tenth, $\angle JOG=95.5^{circ}$

8 0

3 years ago

SolveV minus 10 equal -9

babymother [125]

v-10=-9

Solve for v.

Add 10 to each side of the equation:

v-10+10 =-9+10

v= 1

8 0

9 months ago

Write the equation of the line in the slope-intercept form.<br> M=4/5, y-intercept (0,1)

netineya [11]

Answer:

y=4/5x+1

Step-by-step explanation:

y=mx+b

m is the slope
b is the y-intercept

m= 4/5

b= 1 (0,1) y-value

Equation:

y=4/5x+1

8 0

3 years ago

1.63 repeatind decimal as a mixed number

emmainna [20.7K]

First change the decimal portion into a fraction.
63/100. That is the simplest form of the fraction. add in your whole number. The answer is 1 63/100

3 0

3 years ago

A grain is a measure of weight equal to 0.06 gram. An aspirin tablet

andre [41]

Answer:

300 milligrams

Step-by-step explanation:

You find the answer in grams which is 0.3 then you convert it to milligrams

5 0

2 years ago

Read 2 more answers