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IRISSAK [1]
3 years ago
6

Which of these ARE NOT equivalent?I NEED HELPPP

Mathematics
1 answer:
postnew [5]3 years ago
3 0

Answer:

the first one I'm pretty sure

Step-by-step explanation:

I tried the other ones

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Which point represents a solution to the system y ≤ (1)/(5)x y > 4x-3 select all that apply
jeyben [28]
The system is 

i) y \leq  \frac{1}{5} x
ii) y\ \textgreater \ 4x-3

The solutions to this system, are all points (x, y) for which BOTH these 2 inequalities hold.

Check the points separately: 

(5, 1)
i) 1 \leq \frac{1}{5} *5=1 True
ii) 1\ \textgreater \ 4*5-3=20-3=17 Not True

(0, 0)
i) 0 \leq \frac{1}{5} *0=0 True
ii) 0\ \textgreater \ 4*0-3=-3 True

(-2, -3)
i) -3 \leq \frac{1}{5} (-2)= \frac{-2}{5}= -0.4 True
ii) -3\ \textgreater \ 4(-2)-3=-8-3=-11 True

(2, 5)
i) 5 \leq \frac{1}{5}*2= \frac{2}{5} =0.4 Not True
ii)5\ \textgreater \ 4*2-3=8-3=5 Not True


Answer: (0, 0) and (-2, -3)

8 0
3 years ago
What is the equation of the parabola with focus (1/3, 2/3) and directrix y = 1/2pls help ill give points
maw [93]

Answer:

D. y = 3·x² - 2·x + 11/12

Step-by-step explanation:

The coordinates of the focus of the parabola, f = (1/3, 2/3)

The directrix of the parabola, y = 1/2

The standard form of the equation of a parabola is (x - h)² = 4·p·(y - k)

The coordinates focus = (h, k + p)

The y-coordinates of the directrix, y = k - p

By comparison, we have;

h = 1/3...(1)

k + p = 2/3...(2)

k - p = 1/2...(3)

Adding equation (3) to equation (2) gives;

k + p + (k - p) = k + k + p - p = 2·k = 2/3 + 1/2 = 7/6

k = (7/6)/2 = 7/12

k = 7/12

From equation (2), we get;

p = 2/3 - k

∴ p = 2/3 - 7/12 = 1/12

p = 1/12

The equation of the parabola is therefore;

(x - 1/3)² = 4·(1/12)·(y - 7/12) = y/3 - 7/36

y = 3 × ((x - 1/3)² + 7/36) = 3 × ((x² - 2·x/3 + 1/9) + 7/36) = 3·x² - 2·x + 11/12

y = 3·x² - 2·x + 11/12.

5 0
3 years ago
URGENT!! IS THIS CORRECT????? DEADLINE DUE.
ioda
YESSSS IT ISSSS CORRECTTT!!!!❤️❤️
3 0
4 years ago
Read 2 more answers
Hi i need help with this
ICE Princess25 [194]
The range would be [-4, infinity) because range is the y-value. The lowest y-value is -4. The greatest y-value goes up to infinity.
7 0
3 years ago
What can be concluded about a line that passes through the points (1, negative 2) and (4, negative 2)? Check all that apply.
kirza4 [7]

The first one the second one the fourth one and the last one

4 0
3 years ago
Read 2 more answers
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