9 more than a number is 58. write and solve an equation to determine the number (writing the equation is required)

I need help for algebra 2 for simplify form for example (3x-2i)(3x+2i)

grandymaker [24]

Let's start...

$(3x-2i)*(3x+2i)$

$3x*3x+3x*2i-2i*3x-2i*2i$

$9x^2+6xi-6xi-4i^2$

$9x^2-4i^2$

we don't finish it yet...

$i^2=-1$

Let's replace it

$9x^2-4*(-1)$

$\boxed{\boxed{9x^2+4}}$

6 0

3 years ago

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Eight striped ties and 6 polka dot ties are on a

Otrada [13]

Answer: 6 out of 14 or 3 out of 7

Step-by-step explanation: just add up all the ties and put polka dot ties out of the total and

4 0

3 years ago

Drag the tiles to the boxes to form correct pairs. Not all tiles will be used.

Tamiku [17]

Step-by-step explanation:

(a-4) (a-5) = a^2 - 9a + 20

(a-10) (a-2) = a^2 - 12a + 20

(a-4) (a+5) = a^2 +a - 20

(a-10) (a+2) = a^2 -8a - 20

6 0

3 years ago

What is the answer ?

givi [52]

-7y -3y +2 = -8y-8

-10y +2 = -8y-8

-10y +8y = -8 -2

-2y = -10

2y = 10

y = 10/2 = 5

4 0

3 years ago

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PLEASE HELP ME i’ll mark brainliest if you’re correct

AlladinOne [14]

Answer:

13

Step-by-step explanation:

Write an equation setting the lengths equal to each other.

5x + 3 = 2x + 9

Move the variable (x) to one side. I'm going to subtract 2x from both sides.

5x - 2x + 3 = 2x - 2x + 9

3x + 3 = 9

Subtract 3 from both sides

3x +3 - 3 = 9 - 3

3x = 6

Divide both sides by 3

3x/3 = 6/3

x = 2

Now use 2x + 9 to find the length of EG by substituting 2 in for x.

2x + 9

2(2) + 9

4 + 9

13

You could also use 5x + 3 to find the length of EG by substituting 2 in for x.

5 0

2 years ago

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