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Lady_Fox [76]
3 years ago
7

3) WILL MARK BRAINLIEST + 10 POINTS!!!!!! :)

Mathematics
1 answer:
Charra [1.4K]3 years ago
5 0
 
This is really a long way to go to make something complicated
out of something simple.  The last choice does the job.

cos(180)  =  -1
sin(180)  =   0

So       4 [cos(180) + i sin(180) ]

       =   4 [ -1      +  i (0) ]

       =     -4     yay!
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You are baking cookies. The recipe calls for 3/4 cup of flour. You want to make 1/2 of a batch. How much flour do you need?
MissTica
3/4<span> / 2</span> 
= 6/8 / 2
= 3/8

You need 3/8 cups of flour
6 0
3 years ago
A
mojhsa [17]
Hdjdklsoeloeleorjfjfnifk
8 0
3 years ago
D-13=6 <br> F-26=12<br> M+18=109<br> 56+k=231 <br><br> How do you solve these with steps
lapo4ka [179]

Answer:

D=6+13=19

Step-by-step explanation:

F=26+12=38

M=109-18=91

k=231-56=175

8 0
3 years ago
When a gray kangaroo jumps, its path through the air can be modeled by y= -0.0267x2 + 0.8x where x is the kangaroo's horizontal
VikaD [51]

A gray kangaroo jumped and it's path through the air is given by

  y =-0.0267 x^2  +0.8 x

      where x is the kangaroo's horizontal distance traveled (in feet) wand y is the corresponding height (in feet).

For maximum distance we have to differentiate this expression.

\frac{\mathrm{d}y }{\mathrm{d} x}=-0.0267\frac{\mathrm{d} x^2}{\mathrm{d} x}+0.8\frac{\mathrm{d} x}{\mathrm{d} x}\\  \frac{\mathrm{d} y}{\mathrm{d} x}=-0.0267\times2x + 0.8

For maxima or minima

\frac{\mathrm{d} y}{\mathrm{d} x}=0

-0.0267×2 x + 0.8=0

⇒-0.0534 x + 0.8=0

⇒0.8=0.0534 x

⇒x=0.8/0.0534

x =14.98 (approx)

Now differentiating the expression again

\frac{\mathrm{d^{2}{y}} }{\mathrm{d} x^{2}}=-0.0534


Since double derivative is negative , so

x=14.98 will be the point of Maxima.

The  Kangaroo can go the maximum distance of 14.98 feet (approx)

and the height that can kangaroo go through=-0.0267×14.98×14.98+0.8×14.98

                                                                          = -5.9914 +11.984

                                                                          =   5.9925 feet

                                                                            = 6 feet (approx)

So, X=Horizontal distance covered=14.98×2=29.96 feet,[∵ at x=14.98 it attains maximum height, So total distance Travelled by kangaroo will be two times of the distance covered that it has gone through to achieve maximum height.]⇒ The path is parabolic. = 30 feet (approx)

Y= Vertical distance covered= 5.9925=6 feet(approx)

4 0
3 years ago
Alex and DJ go to the movies at 5:15. The movie lasts 2 hours and 25 minutes. What time did they get out of the move?​
zaharov [31]

Answer:

7:40

Step-by-step explanation:

4 0
3 years ago
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