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wolverine [178]
3 years ago
9

What is the value of y in the solution to this system of equations?

Mathematics
1 answer:
aivan3 [116]3 years ago
3 0

Answer:not clear

Step-by-step explanation:

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A unit vector lies in the xy plane, at an angle of 137 degrees from the x axis, with a positive y component. What is the unit ve
Fed [463]

Answer: ( -0.731,  0.682)

Step-by-step explanation:

The unit vector is defined as a vector that points in the same direction as our vector (137 degrees from the x-axis) and has a magnitude of 1.

Knowing the angle, is really simple to do it.

First, we know that for a radius R and an angle A, the rectangular coordinates can be written as:

x = R*cos(A)

y = R*sin(A)

And if we want that the magnitude/modulus of our vector to be 1, then R = 1, and we know that A = 137°

x = 1*cos(137°) = -0.731

y = 1*sin(137°) = 0.682

Then the unit vector is: ( -0.731,  0.682)

8 0
3 years ago
The height of the tunnel at the center is 35ft, and the vertical clearance must be 21 ft at a point of 8ft from the center. Find
Zinaida [17]

Answer:

y=-0.215x^2+35

Step by Step:

Let, h=0,  k=35, x=8, y=21

We know that, the general equation of the parabola.

   y-k = a(x-h)^2

\Rightarrow y=a(x-h)^2+k  .........(i)

Substitute the  value of h, k, x, y in equation (i) and find the value of a.

  21=a(8-0)^2+35

\Rightarrow 21=a\times 8^2+35

\Rightarrow 21=64a+35

\Rightarrow 64a=21-35

\Rightarrow 64a=-14

\Rightarrow a=\frac{-14}{65}

\Rightarrow a=-0.215

Hence, the equation of the parabola is:

y=-0.215x^2+35

8 0
3 years ago
A bottle of medicine contains 0.5 kilograms of medicine. One dose of medicine is 20g for kids & 45g for adults. If a medical
vaieri [72.5K]
No (see picture for explanation)

3 0
3 years ago
What is the value of z in the equation 2z + 6 = −4?<br><br> 5<br> 1<br> −1<br> −5
daser333 [38]
1. Subtract 6 from both sides now you would get..

2z=-10

Now divide each side by 2z and you get


z= -5

So the answer is -5
5 0
4 years ago
Read 2 more answers
Please help !!!!!!!!!!
Vesna [10]

Answer:

(2, 2) states x=2 and y=2

Considering the inequality:

y\leq 4x-6

Is y less than or equal to 2 when x = 2?

2\leq 4(2)-6\\2\leq 8-6\\2\leq 2\\

Yes, (2, 2) is a solution for the inequality.

4 0
3 years ago
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