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FromTheMoon [43]
2 years ago
5

a plane left chicago at 8 AM. at 1 PM the plane landed in Los Angles, which is 1500 miles away. what was the average speed of th

e plane for the trip?
Mathematics
1 answer:
zlopas [31]2 years ago
6 0

Answer:300 miles gor every 1 hour

Step-by-step explanation:

Okay so first ot gives you 3 numbers see how many hours is from 8am to 1pm then once you get that number divided it by your miles you will get how many miles will you go per 1 hour

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The diameter of a circle has end points j(12,4) and k(-4,8)
alexdok [17]

Answer:

diameter = 4√17;

radius = 2√17; and

center:  (4,6)

Step-by-step explanation:

The end points J (12,4) and K(-4,8) define the diameter of a circle, as well as the radius and center.  

Using the distance formula to find the diameter, d, we get:

d = √ ( (12+4)^2 + (4-8)^2 ) = √ ( 256 + 16 ), or √272 = √(8)(34)

                                         =  √(17)(2^4)) = 4√17

and the radius is half that, or 2√17.  The coordinates of the center can be found using the midpoint rule:  ( [12-4]/2, [4+8]/2 ), or (4, 6).



4 0
3 years ago
Find the area of a regular octagon with side length 6 cm
prohojiy [21]

Answer:

173.82cm²

Step-by-step explanation:

A=2(1+2)a2=2·(1+2)·62≈173.82338cm²

3 0
3 years ago
Read 2 more answers
NEED HELP HERE PLEASE
loris [4]
1. The answer is C. cos180=-1, sin180=0. 2*(cos180+i*sin180)=2*(-1+0)=-2. Check every other answer, none of which gets -2. 

2. The answer is C. cos270=0, sin270=-1. (You can draw out these angles to see). 2*(cos270+i*sin270)=2*(0-i)=-2i, as desired. Other choices don't work.

3. Answer A. Modulus of z is \sqrt(6^2+(-6)^2)=6*\sqrt(2). <span>The </span>angle<span> of the </span>point<span> on the complex </span>plane<span> is the </span>inverse tangent<span> of the complex portion over the real portion. Theta=arctan(-6/6), and arctan(-1)=-pi/4, so theta=-pi/4=-pi/4+2pi=7pi/4. So A is the correct answer.

4. The answer is A. As above, cos270=0, sin270=-1. 3(cos270+sin270*i)=3*(0-i)=-3i. This problem is similar to question 2.

5. </span>z1 = 7(cos 40° + i sin 40°), and z2 = 6(cos 145° + i sin 145°). z1*z2=7*6*(cos 40° + i sin 40°)*(cos 145° + i sin 145°)=42*(cos40*cos145-sin40*sin145+i*sin40*cos145+i*sin145*cos40). Use formula for sum/difference formula of cosines, cos40*cos145-sin40*sin145=cos(40+145)=cos185. Again, sin40*cos145+sin145*cos40=sin(40+145)=sin185. The answer is <span>42(cos 185° + i sin 185°).</span>
6 0
3 years ago
Guys I need help with this
Westkost [7]

Answer:

77

Step-by-step explanation:

10*2+9+3*4^2

10*2+9+3*16

20+9+48

20+57

77

6 0
3 years ago
Read 2 more answers
A wholesaler requires a minimum of 4 items in each order from its retail customers. The manager of one retail store is consideri
Leto [7]

Answer:

The 1st graph will be perfectly matching the conditions.

Step-by-step explanation:

A wholesaler requires a minimum of 4 items in each order from its retail customers.

The manager of one retail store is considering ordering a certain number of sofas, x and a certain number of pillows that come in pairs, y.

Therefore, for y = 0, x ≥ 4 and for x = 0, y ≥ 2 to make the order of 4 items or more.  

Therefore, the equation for the order to be of 4 items will be  

x + 2y = 4.

So, the 1st graph will be perfectly matching the conditions. (Answer)

3 0
3 years ago
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