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Zolol [24]
3 years ago
11

Which Graph correctly solves the equation below? -1/2x^2 +2 = 2x^2 -8

Mathematics
1 answer:
lubasha [3.4K]3 years ago
6 0

Answer:

see attachment

Step-by-step explanation:

The given equation is

-  \frac{1}{2}  {x}^{2}  + 2 = 2 {x}^{2}  - 8

The graph of the left hand side of this equation is

y =  -  \frac{1}{2}{x}^{2}  + 2

This quadratic graph has its vertex at (0,2) and turns upside down.

The right hand side of the equation is

y = 2 {x}^{2}  - 8

This quadratic graph opens upwards and has its vertex at (0,-8).

The two graphs intersects at two points , which are (-2,0) and (2,0).

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Alex is building a rectangular fence around his yard. The total perimeter of the fence is 68 feet and the area of the yard is 24
pychu [463]

Perimeter (P) = 2L + 2w


68 = 2L + 2w


68 - 2L = 2w


2(34 - L) = 2(w)


34 - L = w


********************                                


Area (A) = L * w


     240 = L (34 - L)


     240 = 34L - L²


L² - 34L + 240 = 0


(L - 10)(L - 24) = 0


L = 10  or  L = 24


w = 34 - L   = 34 - 10   = 24      or      w = 34 - 24   = 10


Answer: width = 10, length = 24   assuming length is bigger than the width


6 0
4 years ago
Read 2 more answers
Evaluate ....................
SCORPION-xisa [38]

Answer:

(-1)*(-1)=1

1*(-1)= -1

first option (-1) is the right answer.

3 0
3 years ago
I will mark brainliest to whoever shows their work
Roman55 [17]

Answer: -280000

Step-by-step explanation: Remove parentheses: (a)=a   =12x10 4  - 4x10 5

12x10 4 = 120000

4x10 5=400000

=120000-400000

then subtract the numbers:120000-400000= -280000

7 0
3 years ago
Please help me !!!!!!
-BARSIC- [3]

1-make the demonitores the same

2-remove digits next to (x)
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Step-by-step explanation:

use microsoft maths

7 0
2 years ago
Help!<br> btw, they are 2 different questions.
JulijaS [17]

4x - 3y = 18 (1)

8x - 6y = 34 (2)

Divide equation b by 2

4x - 3y = 17

So now you have

4x - 3y = 18

4x - 3y = 17

--------------------subtract

0 - 0 = 1

0 ≠ 1

No solution

Answer is the last option

4x - 3y = 18

8x - 6y = 34

------------------------------

3x + 6y = 22 (1)

6x + 12y = 44 (2)

Divide equation 2 by 2

3x + 6y = 22 -------------same as equation 1

Subtract equation 2 from 1

0 = 0

Infinitely many solutions

Answer is the second option

3x + 6y = 22

6x + 12y = 44

3 0
4 years ago
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