7x-5+3>9 PLEASE HELP ME UNDERSTAND?

Question

Please I dont get these can you help me please so i can understand them

1. 7x-5+3>9

a. x>6

b. x<6

c. x>3

d.x<3

2. sqrt9x^2y^6

3. (6y^2+4y-3)+(3y^2+2)

Answer 1

1. 7x-5+3&gt;9

Isolate the x and if you divide through by a negative number flip the &lt; or &gt;

7x-5+3&gt;9

7x&gt;9+5-3

x &gt;11/7

none of the multiple choice answers are right. Are you sure you copied it down right?

2. sqrt9x^2y^6

the SQRT of X can also be expressed as X^1/2

(9x^2 y^6)^1/2 = 3x*y^3

3. (6y^2+4y-3)+(3y^2+2)

take the sum of like terms

(6y^2+4y-3)+(3y^2+2) = 9y^2+4y-1

Answer 2

1. 7x-5+3&gt;9

Treat this like a regular equation. Isolate the variable on one side by combining like terms.

7x - 5 + 3 &gt; 9

7x - 2 &gt; 9

7x - 2 + 2 &gt; 9 + 2

7x &gt; 11

7x/7 &gt; 11/7

x &gt; 11/7

There is no answer that matches, please confirm you typed your problem accurately.

a. x&gt;6

b. x&lt;6

c. x&gt;3

d.x&lt;3

2. sqrt9x^2y^6

Is this √(9x²y^6) ? If so:

Is the same as √(3 × 3 × x × x × y³ × y³)

3xy² ← Answer

3. (6y^2+4y-3)+(3y^2+2)

Combine like terms:

6y² + 4y - 3 + 3y² + 2

9y² + 4y - 1 ← Answer

Answer 3

1)

7x-5+3&gt;9

7x-2&gt;9

7x&gt;11

x&gt;11/7

Therefore b and d are correct

2)3xy^3

3)6y^2+4y-3+3y^2+2

(6+3)y^2+4y-3+2

9y2+4y-1

Answer 4

1)

7x - 5 + 3 &gt; 9

7x &gt; 9 + 5 - 3

7x &gt; 11

x &gt; 11/7

2)

±√(9x^2y^6)

= ±√(3xy^3 * 3xy^3)

= ±3xy^3

3)

(6y^2 + 4y - 3) + (3y^2 + 2)

= 6y^2 + 4y - 3 + 3y^2 + 2

= 6y^2 + 3y^2 + 4y - 3 + 2

= 9y^2 + 4y - 1