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xxTIMURxx [149]
2 years ago
5

PLEASE ANSWER ASAP!!!! MUST BE CORRECT FOR POINTS GIVEN!!!!! THE QUESTION IS BELOW IN THE SCREENSHOT!!!!! VERY IMPORTANT!!!!!

Mathematics
2 answers:
olchik [2.2K]2 years ago
8 0
A and D . That was an easy one. Good luck!
Nady [450]2 years ago
7 0
A and D because x is 1/3y not 3y and x times y would be 48 and yes I'm sure
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  What values for θ (0 ≤ θ ≤ 2pie ) satisfy the equation? 
svetoff [14.1K]
Factor out the cos<span>θ:
</span>cosθ (2sin<span>θ + sqrt3) = 0
</span>Therefore, the only ways this can happen are if either cosθ = 0 or if (2sin<span>θ + sqrt3) = 0
</span>The first case, cosθ = 0 only at θ <span>= pi/2, 3pi/2.
</span>The second case, <span>(2sin<span>θ + sqrt3) = 0 simplifies to:
</span></span>sin<span>θ = (-sqrt3)/2
</span><span><span>θ = 4pi/3, 5pi/3
</span></span><span><span>Therefore the answer is A.
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7 0
3 years ago
The figure shows a pair of parallel line segments on a coordinate grid:
VashaNatasha [74]
Can someone help me with this please and thanks !!

5 0
2 years ago
Read 2 more answers
A wind turbine is located at the top of a hill where the wind blows steadily at 12 m/s, and stands 37 m tall. The air then exits
marta [7]

Answer:

Power generated = 4.315 kW

Step-by-step explanation:

Given,

  • speed of wind when enters into the turbine, V = 12 m/s
  • speed of wind when exits from the turbine, U = 9 m/s
  • mass flow rate of the wind, m = 137 kg/s

According to the law of conservation of energy

Energy generated = change in kinetic energy

Since, the air is exiting at same elevation. So, we will consider only kinetic energy.

Energy generated in one second will be given by,

E\ =\ \dfrac{1}{2}.mV^2-\dfrac{1}{2}.m.U^2

   =\ \dfrac{1}{2}\times 137\times (12)^2-\dfrac{1}{2}\times 137\times (9)^2

   =4315.5 J

   = 4.315 kJ

So, energy is generated in one second = 4.315 kJ

Power generated can be given by,

P\ =\ \dfrac{\textrm{energy generated}}{time}

And the energy is generated is already in per second so power generated will be 4.315 kW.

   

   

   

   

   

8 0
3 years ago
What is the measurement of the highlighted side x? Please help and show steps please :)
Soloha48 [4]

Answer:

Denote the O, A, B, C, D as shown in attached image:

O is center of circle.

OA = OC = OD = radius of circle

=> triangle OAD is isosceles

=> BA = BD = 12.8

Applying Pythagorean theorem:

OB = sqrt(OA^2 - BA^2) = sqrt(15.1^2 - 12.8^2) = 8.0

=> x = OC - OB = 15.1 - 8.0 = 7.1

Hope this helps!

:)

8 0
3 years ago
The circumference of a bowling ball is 8pi in. Find the surface area of the bowling ball. Express your answer in terms of pi.
MrRa [10]
Surface area of a sphere (3D solid's name for ball shaped object) is given by

SA = 4 \pi r^{2}

We do not know the radius of the sphere but we can work it out from the circumference 8 \pi

Circumference = 2 \pi r
8 \pi =2 \pi r
r= \frac{8 \pi }{4 \pi }=2

then
SA=4 \pi  (2)^{2} =16 \pi
7 0
3 years ago
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