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LuckyWell [14K]

2 years ago

7

Pls help! will give brainliest

1 answer:

IrinaVladis [17]2 years ago

6 0

7) D -80

8) C -3.3

9) A 127.6

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Give the values of a, b, and c from the general form of the equation (2x + 1)(x - 2) = 0.

balandron [24]

$(2x+1)(x-2) = 0$

Multiplying the factors we obtain:

$2x\cdot x+2x\cdot (-2)+1\cdot x+1\cdot (-2)=0$

$2x^2-4x+x-2=0$

$2x^2-3x-2=0$

The general form of quadratic equation is:

$ax^2+bx+c=0$

Therefore,

$a=2$

$b=-3$

$c=-2$

The correct answer is the first one.

7 0

2 years ago

Given the replacement set {0. 1. 2. 3. 4). solve 4x - 5 = 11.<br> 0 X=0<br> 0 X = 3<br> 0 X = 4

jarptica [38.1K]

Answer:

It's 4

Step-by-step explanation:

4x-5=11

4x=11+5

4x=16

Divide by 4

X=4

3 0

3 years ago

Please help, will mark brainliest!! :)

xz_007 [3.2K]

Answer:C

Step-by-step explanation:

trust meh

4 0

3 years ago

Can someone Help me pls

cluponka [151]

Answer: B

Explaination: hope it helps

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2 years ago

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Solve the inequality<br><br> 2x + 11 =<5x - 10

Yuri [45]

<span>13 i think srry if i get it wrong</span>

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