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valentinak56 [21]
3 years ago
7

I will mark you brainlist!

Mathematics
1 answer:
Zigmanuir [339]3 years ago
7 0

Answer:

C is the answer

Step-by-step explanation:

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HELP PLEASE EASY MATH
zzz [600]

Answer:

C

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
At a given moment, a plane passes directly above a radar station at an altitude of 6 km6 km and the plane's speed is 800 km/h.80
Valentin [98]

Answer: see explanation

Step-by-step explanation:

so you have a plane at constant altitudeof 6km (6000m) flying at 800 km/h (222.222 m/s) (see the image)

the plane is moving with constant speed therefore x(t) = 222.222*t => no forces are interacting horizontally with the plane therefore acceleration is 0, then v is constant and x(t) is a linear function which coefficient is v.

now we have a triangle with an angle theta, one side is x(t), and the other is 6000m. we can get theta by tan(theta) = 6000/(222.222*t). 24 minutes are 1440 seconds so if we replace such value, we get the theta angle by  solving for theta => theta = arctan(6000/(222.222*1440)) = 0.019 radians or 1.074 degrees. Now if you want to know the exchange rate of theta we have to differentiate the expression with respect to t:

\frac{d}{dt} \theta = \frac{d}{dt}(arctan(\frac{6000}{222.222*t} )) = \frac{1}{1+\frac{6000}{222.222*t} } * -\frac{27}{t^2}  = -\frac{27}{t^2+729.001}

then replace t with 1440 and you will get that theta is changing by -0.000013 (1.3E-5) radians or -7.458E-4 degrees every second which has a lot of sense since the plane is getting out of your line of sight due to the earth's curvature

5 0
3 years ago
PLEASE HELP ON THIS <br> Thank You!<br><br> Please explain<br> ____________
torisob [31]
The answer is a decreasing exponential function because the percentage of change is constant. You can obtain this answer by looking at the amount of decrease each time and dividing it by the higher value. If you do this for each step, you'll see that there is a 12% decrease for each year. 
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3 years ago
Find the number that belongs in the green box,<br><br>round your answer to the nearest tenth. ​
alex41 [277]

Answer:61.3

Step-by-step explanation:

Using the Law of Sines, you get this formula

sin(angleA)=(a*sin(angleB))/b

sin(angleA)=(14*sin(70)/15)

sin(angleA)=(.88)

angleA=sin-1(.88)

angleA=61.3

6 0
3 years ago
Write thirty divided by five 3 ways
viktelen [127]

Answer:

30 divided by 5

\frac{30}{5}

5⟌30

Hope this helps!

7 0
4 years ago
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