3 years ago

what are the coordinates of a point on the unit circle if the angle formed by the positive x-axis and the radius is 60

Mathematics

1 answer:

pashok25 [27]3 years ago

6 0

$(1/2, \sqrt{3}/2)$

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Find two complex numbers that have a sum of 10i, a difference of -4 and a product of -29

HACTEHA [7]

Let these two numbers be $z$ and $w$ . Their sum is $10i$ , their difference is -4, and their product is -29:

$z+w=10i$

$z-w=-4$

$zw=-29$

Add the first two equations together to eliminate $w$ :

$(z+w)+(z-w)=10i-4\implies 2z=-4+10i\implies z=-2+5i$

Then

$w=10i-z\implies w=10i-(-2+5i)=2+5i$

Just to confirm this is correct, check their product:

$(-2+5i)(2+5i)=-4+25i^2=-4-25=-29$

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3 years ago

After 4 minutes of reading, Aaron was on page 14 of his book. After 8 minutes he was on page 20. Which equation models the page

Leya [2.2K]

Answer:

Step-by-step explanation:

4×14=56
8×20=160
160×56=8960

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2 years ago

Gabriella drives her car 340 miles and averages a certain speed. If the average speed had been 8 mph less, she could have travel

Elena L [17]

Most likely would be 42 because 340-8=332 then 332 divided by 8=41.5 and if you round it is 42.

5 0

3 years ago

A plane is approaching an aircraft carrier at 25° angle of elevation from 3.2 miles away how far above sea level is the plane

s2008m [1.1K]

Answer:

$Height\approx 1.35\ miles$

Step-by-step explanation:

The angle of elevation $=25\textdegree$

It is $3.2\ miles$ away from the point.

If we imagine a right triangle having an angle $25\textdegree$ .

Hypotenuse $=3.2$ , Opposite=Height from sea level $(h)$

$\sin 25=\frac{opposite}{hypotenuse}\\\\\sin 25=\frac{h}{3.2}\\\\h=3.2\times \sin 25\\\\h=3.2\times 0.4226\\\\h=1.3524\approx 1.35\ miles$

8 0

3 years ago

Read 2 more answers

!!!10 points + brainly!!!

mamaluj [8]

Answer:

The number of fours divided by the total number of possibilities. If there are two fours and 8 spaces, the probability is 2/8 = 1/4.

Step-by-step explanation:

3 0

2 years ago