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Rama09 [41]
3 years ago
7

Triangle ABC has coordinates A(2, 4), B(5, 6), and C(1, 4). If the triangle is rotated 180° clockwise about the origin, what are

the coordinates of B'?
Mathematics
1 answer:
slamgirl [31]3 years ago
4 0

Answer:

B'(-5,-6)

Step-by-step explanation:

The mapping for 180° clockwise rotation about the origin is:

(x,y)\to (-x,-y)

The find the image of B(5,6), we plug in x=5 and y=6 into the rule.

(5,6)\to (-5,-6)

Therefore the coordinates of B' are (-5,-6).

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HELP WITH MATHHHH PLEASE
Darina [25.2K]

The vertex is at the point (0,0) and the focus at the point (0, 1/8). This is given to us. Both the vertex and focus are separated by a vertical distance in the positive direction.

This means that the parabola opens upward. The vertex form of the equation for a parabola that opens upward is:

y = a(x - h)^2 + k, where the point

(h, k) is the vertex of the parabola.

Plug the vertex given into the above equation.

y = a(x - 0)^2 + 0

y = ax^2 + 0

y = ax^2

What is a?

Note: a = 1/(4f), where f is the distance from the vertex to the focus or simply as given in the focus point above 1/8.

Let f = 1/8

a = 1/4(1/8)

a = 1/(1/2)

a = 2

The equation we want is

y = 2x^2.

f(x) = 2x^2

Choice A is the answer.

8 0
3 years ago
The expression y2 – 10y + 24 has a factor of y – 4. What is another factor of y2 – 10y + 24?
GREYUIT [131]

Answer:

Step-by-step explanation:

If we divide 24 by 6, we get 4, which is the other factor of 24 when given the one factor of 6. Same goes here. In order to find out what the other factor of y^2-10y+24=0 is when given one factor of y - 4, we simply divide the second degree polynomial by y - 4 to get the quotient. The quotient, then, is the other factor. Synthetic division is the easiest way to do this.

If y - 4 is the factor, then by the Zero Product Property, y - 4 = 0 and y = 4. Setting up synthetic division:

4|   1    -10     24

____________

The rule is to start by bringing down the first term, multiplying it by the number outside, then putting that product up under the next term in line:

4|   1     -10     24

<u>              4           </u>

     1

Then add the column, multiply the sum by the number outside, and put that product up under the next term in line:

4|    1     -10     24

<u>                4    -24</u>

      1      -6

And add the last column and that is the remainder. We get a 0 remainder. That means that y - 4 goes evenly into the polynomial and the other factor we are looking for is found in the numbers under the addition line. These numbers are the leading coefficients of the depressed polynomial, the polynomial that serves as the other factor: 1y - 6.

Therefore, the 2 factors that multiply together to give us y^2-10y+24=0 are (y - 4)(y - 6) and we can check ourselves by multiplying this out by FOILing to see if the result is the polynomial we started with. It is, so we're all done!

8 0
3 years ago
A point is reflected over the y-axis, but the x-coordinate does not change. What is the location of the point? (0, 3) (-1, 0) (1
Wewaii [24]

Answer:

(0, 3)

Step-by-step explanation:

Any point on the y-axis doesn't move when reflected across the y-axis. The x-coordinate must be zero. The only choice with that x-coordinate is (0, 3).

5 0
3 years ago
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3) Manuel constructs a scale model of a building with a rectangular base.
sergeinik [125]

Answer:

14

Step-by-step explanation:

7 0
3 years ago
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Nicole and Nancy read a total of 18 books this summer. Nancy read 3 more than Nicole. How many did Nicole read?
Serjik [45]
Assuming Nicole = x, Nancy = y

x + y = 18 \\ y = x + 3

Substitute that into
x + x + 3 = 18 \\ 2x = 15 \\ x = 7.5

Answer : Nicole read 7.5 books.

Hope this helps. - M
5 0
4 years ago
Read 2 more answers
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