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S_A_V [24]
3 years ago
10

How many solutions does the system have? x+2y=2 2x+4y=−8 ​

Mathematics
1 answer:
Nikitich [7]3 years ago
3 0

Answer:

Step-by-step explanation:

x + 2y = 2

2x + 4y = -8

-2x - 4y = -4

 2x + 4y = -8

0 not equal to -12

no solution

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PLEASE ANSWER ASAP
Natali [406]
Maybe Option 2? Not really sure just trying to help
6 0
3 years ago
Given that (ax^2 + bx + 3) (x+d) = x^3 + 6x^2 + 11x + 12, it asks a + 2b - d = ?
astraxan [27]

Answer:

a+2b-d=1, 3, 5, 7

Step-by-step explanation:

(ax^2+bx+3)(x+d)

ax^3+bx^2+3x+adx^2+bdx+3d

ax^3+bx^2+adx^2+3x+bdx+3d=x^3+6x^2+11x+12

ax^3=x^3, a=1

bx^2+adx^2=6x^2

x^2(b+ad)=6x^2

b+ad=6

b+(1)d=6

b+d=6

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

3x+bdx=11x

x(3+bd)=11x

3+bd=11

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

b=6-d

3+(6-d)d=11

3+6d-d^2=11

3-11+6d-d^2=0

-8+6d-d^2=0

d^2-6d+8=0

factor out,

(d-4)(d-2)=0

zero property,

d-4=0, d-2=0

d=0+4=4,

d=0+2=2

b=6-4=2,

b=6-2=4.

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

a+2b-d=1+2(2)-2=1+4-2=5-2=3

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

a+2(4)-4=1+8-4=9-4=5

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

a+2(2)-4=1+4-4=5-4=1

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

a+2(4)-2=1+8-2=9-2=7

5 0
3 years ago
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Vadim26 [7]

Answer:

t=-3

Step-by-step explanation:

6t=−18

t=-18/6

t=-3

6 0
3 years ago
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Which statements describe a parallelogram that must be a square?<br><br> Select each correct answer.
Oxana [17]

That would be B, C and E.

A and D could be a rhombus.

8 0
3 years ago
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GIVING A BUNCH OF POINTS AND BRAINLIST!! PLEASE HELP ME FAST If h(x)=(f o g)(x) and h(x)=^4squareroot x+7 find g(x) if f(x)=^4 s
mojhsa [17]

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