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Temka [501]
3 years ago
7

HELP PLEASE

Mathematics
1 answer:
RUDIKE [14]3 years ago
7 0
We have the following equation:
 y = -2x2 + 2x + 2
 We look for the vertex of the parabola. For this, we derive the given equation:
 y '= - 4x + 2
 We match zero:
 0 = -4x + 2
 We clear x:
 4x = 2
 x = 2/4
 x = 1/2
 We evaluate the function for x = 1/2:
 y = -2 * (1/2) ^ 2 + 2 * (1/2) + 2
 y = 2.5
 The vertice of the parabola is:
 (x, y) = (1/2, 2.5)
 We now look for the value of the function for x = 6:
 y = -2 * (6) ^ 2 + 2 * (6) + 2
 y = -58
 Answer:
 
The vertice of the parabola is:
 (x, y) = (1/2, 2.5)
 the value of the function for x = 6 is:
 
y = -58
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6 0
3 years ago
Determine which postulate or theorem can be used to prove that ABC=DCB
lianna [129]

Answer with explanation:

In Δ ABC and ΔD BC

∠A=∠D-------Given

∠ABC=∠DCB-------Each being 90° given in the Diagram.

Side, BC is Common.

⇒⇒Δ ABC ≅ ΔD BC-------[AAS]

When two triangles are congruent , their areas are equal.

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3 0
3 years ago
Read 2 more answers
Parallelogram ABCD is a rectangle. What are the slopes of the sides that make this quadrilateral a rectangle?
snow_tiger [21]

Answer: -3 and 1/3

Step-by-step explanation:

There’s your answer

6 0
2 years ago
Help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
ahrayia [7]

Answer:

9. x=-6, y=0

10. x=-9, y=-10

11. x=3, y=-1

Step-by-step explanation:

2x-9y=-12\\3x+18y=-18

Multiply the first equation by 2.

4x-18y=-24\\3x+18y=-18

Add the equations.

7x=-42

x=-6

We figured out x now we have to figure out y. To figure out y plug in x into any equation.

2(-6)-9y=-12

-12-9y=-12

-9y=0

y=0

Your answer is x = -6 and y = 0 for number nine.

6x+3y=24\\2x+3y=-12

Change the signs of the second equation becuase 3y and 3y are both positive. We need one of them to be negative.

6x+3y=24\\-2x-3y=12

Add them.

4x = 36

x=9

Now we have to figure out y.

2(9)+3y=-12

18+3y=-12

3y=-30

y=-10

x=-9 and y=-10 is your answer to number ten.

10x+5y=25\\-7x-3y=-18

30x+15y=75\\-35x-15y=-90

-5x=-15

x=3

-7(3)-3y=-18

-21-3y=-18

-3y=3

y=-1

x=3 and y=-1 is the answer to number eleven. I hope this helps! Let me know if I got anything wrong.

4 0
3 years ago
Read 2 more answers
Marcel bought a new pair of inline skates. Each
g100num [7]

Answer:

1288.05

Explanation:

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2(pi)r=257.61

257.61x5=1288.05

4 0
3 years ago
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