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Tanya [424]
2 years ago
5

Point A,located at (-11,-7) on the coordinate plane,is reflected over the x-axis to form point B.Then point B is reflected over

the y-axis to form point C.What are the coordinates of B and C?
Mathematics
1 answer:
Alekssandra [29.7K]2 years ago
6 0

Answer:

B (-11,7)

C (11,7)

Step-by-step explanation:

The coordinates of point A are (-11,-7).

If the point is reflected over the x-axis to form point B then, the x coordinate will remain the same and the y coordinate will change by sigh only.

So, coordinates of point B will be (-11,7)

Now, point B is reflected over the y-axis to form point C.

Hence, the y coordinate of point C will remain the same as point B and the x coordinate of point B will change by its sign only.

Therefore, the coordinates of point C will be (11,7). (Answer)

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Answer:

47 is your answer

Step-by-step explanation:

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2 years ago
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The equations below represent the numbers y of tickets sold after x weeks for two different local music festivals
Anton [14]
Assuming you mean y=10x+150 and y=20x+115, you need to use a simultaneous equation, because you have two equations with two unknowns (x and y)

rearrange so
10x-y=-150
20x-y=-115

multiply the top by -1, so that if we add the two lines together, the y will cancel out
-10x+y=150
20x-y=-115

add the two lines together
10x=35
x=3.5

so the time is 3 and a half weeks

then we can sub in x to find y
20x-y=-115
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y=185

so 185 tickets were sold !
you can sub these values into your original equations to check your answer :)
5 0
2 years ago
Read 2 more answers
Suppose that you bet $5 on each of a sequence of 50 independent fair games. Use the central limit theorem to approximate the pro
amm1812

Answer:

chances chances of happening = 0.0119

Step-by-step explanation:

given data

bet =  $5

independent fair games = 50

solution

we will think game as the normal distribution

so here  mean is will be

mean = \frac{50}{2}

mean = 25

and standard deviation will be

standard deviation = \sqrt{50*0.5*0.5}

standard deviation = 3.536

so

we have to lose 33 out of 50 time for lose more than $75

so as chance of doing things z score is

z score = \frac{33-25}{3.536}

z score  = 2.26

so from z table

chances chances of this happening = 0.0119

8 0
2 years ago
A bicycle wheel has an inside radius of 12 inches. Which expression could be used to find the inside circumference of this wheel
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Step-by-step explanation:

We have given that,

The inner radius of a bicycle wheel is 12 inches.

It is required to find the expression to find the inside circumference of this wheel.

The outer surface of the wheel is equal to its circumference. It is given by :

C=2\pi r

r is radius of wheel

C=2\times 3.14\times 12\\\\C=75.36\ \text{inches}

This is the required explanation.

5 0
2 years ago
Which ordered pairs are solutions to the inequality 2y−x≤−6 ?
Vinil7 [7]
Given inequality: 2y−x ≤ −6

Option-1 : (-3,0)
2×0 - (-3) = 0 + 3 = 3 > -6
Not satisfied

Option-2 : (6,1)
2×1 - 6 = 2 - 6 = -4 > -6
Not satisfied

Option-3 : (1, -4)
2×(-4) - 1 = -8 - 1 = -9 < -6
Satisfied.
Thus, (1, -4) is a solution.

Option-4 : (0, -3)
2×(-3) - 0 = -6 - 0 = -6 = -6
Satisfied.
Thus, (0, -3) is a solution.

Option-5 : (2, -2)
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Satisfied.
Thus, (2, -2) is a solution.

Solutions are: (1, -4), (0, -3) , (2, -2)

4 0
2 years ago
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