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Stolb23 [73]
3 years ago
11

Express the following in simplest a + bi form.

Mathematics
2 answers:
FrozenT [24]3 years ago
8 0

Answer:

3+6i

Step-by-step explanation:

I did it

vagabundo [1.1K]3 years ago
5 0

Answer:3+6i

Step-by-step explanation:

You might be interested in
Am I correct?? If not please correct me
pickupchik [31]
The answer would actually be A
F(x)=3x^2+4x
G(x)=2x^2-x+1
The two x^2 items are both positive and are added together to be 5x^2
The two x items would be added together to get 3x cause of the -x
Then +1 is just +1
Making the equation 5x^2+3x+1
If we were subtracting you would be absolutely correct, but since we are adding would go the opposite direction.
I hope this helps!
3 0
3 years ago
Read 2 more answers
A person in a 300 foot tall lighthouse is attempting to locate a boat floating in the water 720 feet from the bottom of the ligh
USPshnik [31]

Answer:

Step-by-step explanation:

Because the line of sight from the top of the lighthouse is parallel to the water, the angle of depression (which is OUTSIDE the right triangle) is alternate interior with the angle of elevation, which is the base angle INSIDE the right triangle this creates.  The base angle that is NOT the right angle, of course.  Because these angles are alternate interior of a transversal cutting a pair of parallel lines, they are congruent.  Therefore, we need to find the measure of the base angle using the 2 sides given.  The height of the lighthouse is the height of the triangle and the distance the boat is from the base of the lighthouse is the side adjacent to the angle.  We are looking at the tangent ratio which is side opposite/side adjacent.  When you need to find a missing angle on your calculator, you willl use the 2nd button and then whichever trig identity you need.  Because we need tangent, we will hit 2nd then tan and get this on our screen:

tan^{-1}(

Inside that parenthesis, enter 300/720 and hit enter to get your angle.  2 things here:  make sure you are in degrees in your calculator by hitting mode and checking that "degrees" is highlighted instead of radians, and secondly, you do not have to close the parenthesis to get the correct answer.  Your angle measure should be 22.619 degrees, by the way.

3 0
3 years ago
Create a linear equation for the following data:
djverab [1.8K]

Answer:

y=-.386x + 2.879

Explanation:

For these type of calculations, you would have to use a graphing calculator to use the <em>linear regression</em> function. What this does is, it takes the x & y values given on the chart and it gives you the best possible linear equation for the given data set.

The exact results were:

y = -0.3862928349 + 2.869158879

4 0
3 years ago
1. Write an equation for the circle whose graph is shown.
Dmitry [639]

Answer:

325

Step-by-step explanation:

got it right on edg

8 0
3 years ago
1.1
solniwko [45]

Answer:

Cost = 112.266 cent/km

Step-by-step explanation:

Given

Unit\ cost = R17.82/litre

Rate = 6.3litre/100km

Required

The fuel cost in cent\ per\ km

This is calculated using:

Cost = Unit\ cost * Rate

Cost = R17.82/litre * 6.3litre/100km

Cost = R17.82 * 6.3/100km

Cost = R1.12266/km

Multiply by 100 to get the cost in cents

Cost = 1.12266 * 100 cent/km

Cost = 112.266 cent/km

6 0
3 years ago
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