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Neporo4naja [7]
3 years ago
14

Which of the following is equivalent to 3x -2(x -1)>11-9x

Mathematics
1 answer:
BaLLatris [955]3 years ago
5 0

Answer:

x > 9/10 is the answer to the equation.

Step-by-step explanation:

3x -2(x -1) > 11-9x

3x -2x +2 > 11-9x

x+2> 11-9x

x+9x > 11-2

10x > 9

x > 9/10

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Help me please i don't know what to do
astra-53 [7]

Answer:

a. a = 1, b = -5, c = -14

b. a = 1, b = -6, c = 9

c. a = -1, b = -1, c = -3

d. a = 1, b = 0, c = -1

e. a = 1, b = 0, c = -3

Step-by-step explanation:

a. x-ints at 7 and -2

this means that our quadratic equation must factor to:

(x-7)(x+2) = 0

FOIL:

x^2 + 2x - 7x - 14 = 0

Simplify:

x^2 - 5x - 14 = 0

a = 1, b = -5, c = -14

b. one x-int at 3

this means that the equation will factor to:

(x-3)^2=0

FOIL:

x^2 - 3x - 3x +9 = 0

Simplify:

x^2 - 6x + 9 = 0

a = 1, b = -6, c = 9

c. no x-int and negative y must be less than 0

This means that our vertex must be below the x-axis and our parabola must point down

There are many equations for this, but one could be:

-x^2-x-3=0

a = -1, b = -1, c = -3

d. one positive x-int, one negative x-int

We can use any x-intercepts, so let's just use -1 and 1

The equation will factor to:

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

This is a perfect square

FOIL:

x^2-1=0

a = 1, b = 0, c = -1

e. x-int at \sqrt{3} , -\sqrt{3}

our equation will factor to:

(x+\sqrt{3} )(x-\sqrt{3)} =0

This is also a perfect square

FOIL and you will get:

x^2 - 3 = 0

a = 1, b = 0, c = -3

4 0
2 years ago
1. Solve the following equation.(MAFS.8.EE.3.7)<br><br> 5(3x + 7) + 2x = 7x – 5(–2x + 9)
Ksivusya [100]

Answer:

there is no solution

Step-by-step explanation:

Expand.

15x+35+2x=7x+10x-4515x+35+2x=7x+10x−45

2 Simplify  15x+35+2x15x+35+2x  to  17x+3517x+35.

17x+35=7x+10x-4517x+35=7x+10x−45

3 Simplify  7x+10x-457x+10x−45  to  17x-4517x−45.

17x+35=17x-4517x+35=17x−45

4 Cancel 17x17x on both sides.

35=-4535=−45

5 Since 35=-4535=−45 is false, there is no solution.

No Solution

4 0
2 years ago
Read 2 more answers
PLEASE HELP Solve |10x + 15| &gt;= 105
yan [13]
|10x + 15| \geq 105\\&#10; 5|2x + 3| \geq 105\\&#10;|2x+3|\geq21\\&#10;2x+3\geq21 \vee 2x+3\leq-21\\&#10;2x\geq 18\vee2x\leq-24\\&#10;x\geq9 \vee x\leq-12\\&#10;x\in(-\infty,-12\rangle\cup\langle9,\infty)
8 0
3 years ago
What is correct order 3×4÷2
Bad White [126]
Multiplying then divide
5 0
3 years ago
-32&gt;-5+9z Solve for x.
Darya [45]

Answer:

I do not know how it wants the answer, but it is -4.1 repeating.

I am guessing you meant solve for z too? If there are multiple choice I can help choose the right one.

Step-by-step explanation:

-32>5+9z

subtract 5 from both sides

-37>+9z

then divide 9 from both sides

-4.1111 repeating > z

4 0
3 years ago
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