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bonufazy [111]
3 years ago
8

Point P is shown graphed on the coordinate grid as (6,4). In relation to point P, point A is located 2 units closer to the origi

n along the x-axis and 2 units farther from it along the y-axis. What would be the location of point A ?
Mathematics
1 answer:
Zina [86]3 years ago
3 0

Answer:

The coordinates of point A are A(x,y) = (4,6).

Step-by-step explanation:

The location of point A is defined by the vectorial sum of absolute coordinates of point P and coordinates of point A relative to coordinates of point P, that is:

A(x,y) = P(x,y) + \vec v_{PA} (1)

P(x,y) - Absolute coordinates of point P.

A(x,y) - Absolute coordinates of point A.

\vec v_{PA} - Vector to point A relative to point P.

If we know that P(x,y) =(6,4) and \vec v_{PA} = (-2, 2 ), then the absolute coordinates of point A are:

A(x,y) = (6,4) +(-2,2)

A(x,y) = (4,6)

The coordinates of point A are A(x,y) = (4,6).

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A famous monument is 300 ft tall. When it casts​ 210-ft shadow, a nearby tree casts a shadow that is 27 ft long. About how tall
Nataliya [291]

Answer:

38.57 feets

Step-by-step explanation:

Given that:

Height of monument, h = 300ft

Shadow of monument, s = 210 ft

Shadow of tree, s = 27ft

Height of tree, = x

Using the relation :

Height / shadow = height / shadow

Monument = tree

300 / 210 = h / 27

Cross multiply

300 * 27 = 210 * h

8100 = 210h

h = 8100 / 210

h = 38.57 feets

3 0
2 years ago
Solve the system by graphing.
shutvik [7]

Answer:

A(-2,5)

x= -2   ,   y=5

Step-by-step explanation:

draw the lines for both equations and that will be by finding any points in the lines:

1. sub any value for x to find y in the equation (y=-x+3) :

  • When x=0 ⇒ y=-0+3, y=3     (the point is: (0,3)
  • When x=1 ⇒ y= -1 +3 , y=2    (the point is: (1,2)
  • When x=2 ⇒ y=-2+3, y=1      (the point is: (2,1)
  • When x=-1 ⇒ y=-(-1)+3, y=4     (the point is: (-1,4)
  • When x=-2 ⇒ y=-(-2)+3, y=5     (the point is: (-2,5)

plot the points in the graph and match them to get the first line for equation(1).

2. sub any value for x to find y in the equation (y=-3x-1) :

  • When x=0 ⇒ y=-3(0)-1, y=-1     (the point is: (0,-1)
  • When x=1 ⇒ y=-3(1)-1, y=-4     (the point is: (1,-4)
  • When x=2 ⇒ y=-3(2)-1, y=-7     (the point is: (2,-7)
  • When x=-1 ⇒ y=-3(-1)-1, y=2     (the point is: (-1,2)
  • When x=-2 ⇒ y=-3(-2)-1, y=5     (the point is: (-2,5)

Now again plot the points in the same graph and match them to get the second line for equation(2).

When you finish you will have two lines drawn in a graph, the solution will be were the two points intercept, and that will be:

A(-2,5)

x= -2   ,   y=5

(note: you can check your answer by subbing the value of x in both equations and you should get the answer 5 as the value of y)

7 0
2 years ago
A roofer is placing 1/6 of the shingles for the roof into 2 equal stacks. What fraction of all the shingles will be in each stac
umka2103 [35]
1/6 divided by 2 is 1/6 multiplied by 1/2

1/6 * 1/2 = 1/12

1/12 of the shingles for the roof will be in each stack.
7 0
3 years ago
Read 2 more answers
What should be multiplied on both sides to solve the following equations 2/9x=3/4?
ankoles [38]

Answer:

By multiplying both sides of the equation by \frac{4x}{3}  we solve the equation.

Step-by-step explanation:

Given the equation:

\frac{2}{9x} =\frac{3}{4}

in order to solve for x, we need to bring the unknown "x" to the numerator. Such is normally done by first finding the so called "Least common Denominator" (LCD), and using it to multiply both sides of the equal sign to get rid of all denominators in the equation. This is similar in a way to the procedure of cross multiplication.

Notice that the LCD in our case is simply the straight product of all factors in the denominators : 9 * x * 4 = 36 x

\frac{2}{9x} =\frac{3}{4}\\\frac{2}{9x} \,36\,x=\frac{3}{4}\,36\,x\\8=27\,x

Then, in order to solve for the unknown "x" we need to isolate it on one side of the equal sign, so we need to divide both sides by the numerical factor 27 :

x=\frac{8}{27}

Therefore, if we want to make both operations we performed into a single process, what we actually did was multiply by 36 x and divide by 27:

36\,x/27=\frac{36\,x}{27} =\frac{4x}{3}

so we can say that we can achieve the solving of the equation in one step by multiplying both sides of the equal sign by " \frac{4x}{3} " :

\frac{2}{9x} =\frac{3}{4}\\\frac{2}{9x}\,\frac{4x}{3}  =\frac{3}{4}\,\frac{4x}{3} \\\frac{8}{27} = x

3 0
2 years ago
An aircraft carrier made a trip. The trip there took 5 hours and the trip back took 6 hours. It averaged 3 mph faster on the tri
kogti [31]

Answer: The outbound trip is 18 miles per hour

Step-by-step explanation:

Let x represent the speed of the plane.

An aircraft carrier made a trip. Let us assume that this trip was outbound. The trip there took 5 hours.

Distance = speed × time. Therefore

Distance = 5x

The trip back took 6 hours. It averaged 3 mph faster on the trip there then on the return trip. This means that the speed on the trip back is x - 3 mph.

Distance = 6(x-3) = 6x - 18

Since the distance is the same,

5x = 6x - 18

6x - 5x = 18

x = 18

The speed on return or inbound trip would be 18 - 3 = 15 mph

7 0
3 years ago
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