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Lostsunrise [7]
3 years ago
15

Which of the following best describes the graph of y=-x^2

Mathematics
2 answers:
astraxan [27]3 years ago
8 0

Answer:

Step-by-step explanation:

to draw the graph of y = - x²............(1)

the above given equation is the equation of parabola.

now, comparing this equation (1) will general equation of parabola which is

                  x² = 4  a y

                   a = -1/4  

this means the parabola vertex is at origin (0,0)

parabola will be open downward.

the graph shown is the required graph.

AlexFokin [52]3 years ago
6 0
Show me the graphs. I have the answer.
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Gene says that -2 is less than -2.25. Is he correct? Explain why or why not.
Fittoniya [83]

Answer:

No

Step-by-step explanation:

-2 is closer to zero than -2.25, which means -2 is greater than -2.25

3 0
3 years ago
Read 2 more answers
What is the area of the triangle?<br> 16<br> 8<br> 10
sertanlavr [38]

Answer:

64

Step-by-step explanation:

Find the area of both triangles inside the bigger triangle and add them together.

Use the Pythagorean theorem to find the missing length of the leg in the smallest triangle:

a² + b² = c²

8² + b² = 10²

64 + b² = 100

36 = b²

6 = b

Calculate the area of the smaller triangle:

1/2(<em>b</em>x<em>h</em>)

1/2(6 x 8)

1/2(48)

24

Calculate the area of the bigger triangle:

<em>We know that the longer leg is 10 units because we were able to subtract the length of the smaller triangle's leg from 16.</em>

1/2(<em>b</em>x<em>h</em>)

1/2(10 x 8)

1/2(80)

40

Add both areas to find the area of the largest triangle:

40 + 24 = 64

3 0
2 years ago
Steven has a rectangular closet the length is 10 feet and the width is 48 inches determine the area of the closet in square feet
Alexxandr [17]
To be honest with u I think that u need to multiply 10 times 48.. I think thats it not sure if is the 100% correct answer
6 0
3 years ago
Given: (↔AB) ║ (↔CD)
nordsb [41]
1) m = y2 - y1/x2 - x1
y = mx + b
m = 7 - 0/3 - 8
y = -7/5x + 11.2
2) y= -7/5x + 12
(the slope or m stays the same because the two equations are parallel)
8 0
2 years ago
You have 400 feet of fencing to enclose a rectangular plot. Find the length and width of the plot that will maximize the area. W
3241004551 [841]
Well, we can denote L and W for the length and width respectively. Lets say the A is the area, we have: 1. A=(L × W) as well as 2. 2(L+W)=400. We rearrange the second equation to get 3. W=200-L. From this, we can see that 0<L<200. Substitute the third equation into the first to get A=(200L-L²). put this formula into the scientific calculator and you will find a parabola with a maximum. That would be the maximum area of the enclosed area. Alternatively, we can say that L is between 0 and 200 when the area equals 0. (The graph you find will be  area against length). As the maximum is generally found halfway, we substitute 100 into the equation and we end up with 10000.

Hope this helps.
6 0
3 years ago
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