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Wittaler [7]
3 years ago
15

Both please please………

Mathematics
1 answer:
VARVARA [1.3K]3 years ago
3 0

Answer:

Step-by-step explanation:

First one - Because it says 2 years ago, you can do 60000-4% for one year and then take the answer and - another 4% for the second year to get her income from 2 years ago. (I commented on this)

Second one - 1/3 - Take 1/6*200%=1/6*2=2/6, 2/6=1/3. So 1/3 or 2/6 of the students have a engineering major

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I am not quite sure how to do these.
EleoNora [17]
Sin (Π/2 - theta) = sin(Π/2) * cos(theta) - cos(Π/2) * sin (theta)
and as we know sin(Π/2) =1 , cos(Π/2)=0
so sin(Π/2 - theta) = 1* cos(theta) - 0* sin(theta)= cos(theta)
2nd cos(180+ theta) = cos(180)*cos(theta) - sin(180)* sin(theta)
,,, so , cos(180+theta) = -cos(theta)
6 0
4 years ago
The sum of two numbers is 84. If four times the smaller number is subtracted from the larger number the result is 14. Find the t
malfutka [58]

Answer:

y=14

Step-by-step explanation:

x + y = 84

-1(x - 4y = 14)

-x + 4y = -14

x + y = 84

-x + 4y = -14

5y = 70

divide by 5

y = 14

8 0
3 years ago
Read 2 more answers
Let X be an exponential random variable with parameter 2. Find the CDF of X . Express your answer in terms of x using standard n
erastovalidia [21]

Answer:

F(x,\lambda) = 1-e^{2x}     for      x\geq0

and   F(x,\lambda) = 0    for   x

Step-by-step explanation:

Remember that the CDF of an exponental random variable is given by

F(x,\lambda) = \left \{ {{1-e^{\lambda x}  \ \  \ \ \  x\geq 0} \atop {0}  \ \ \ \ \ \  \ \ \ \ \ x

where   \lambda   is the parameter.  In this case    \lambda =  2  so, for this case

F(x,\lambda) = \left \{ {{1-e^{2x}  \ \  \ \ \  x\geq 0} \atop {0}  \ \ \ \ \ \  \ \ \ \ \ x

7 0
4 years ago
What are the measurements of (5×+7)
elena-s [515]

5 feet 7 inches 170.18

7 0
4 years ago
Solve the equations help
Leni [432]

Answer:

First equation x=2, Y=9, Second Eq, x=2, y=1

Step-by-step explanation:

X+Y=11

2X-Y=-5 by substitution Y=11-X

So, 2x-(11-x)=-5, 2x-11+x=-5, 3x=6, x=2. Thus, Y=11-2=9

2x+y=5

3x-2y=4

so, y=5-2x

Thus, 3x-2(5-2x)=4

3x-10+4x=4, 7x=14, x=2, Thus, Y=5-2(2)= 1

5 0
3 years ago
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