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Mariulka [41]
3 years ago
15

Find the product (3a+3b)(3a-2b)

Mathematics
1 answer:
vitfil [10]3 years ago
6 0

Answer:

9a^2 + 3ab + 6b^2

You might be interested in
Can anyone help me solve these linear systems using substitution?
vivado [14]

The system of the linear systems of equation using substitution is;

  • x = 2, y = 2
  • x = -20, y = -1

<h3>Linear equation</h3>

3x-y=4

x+2y=6

from (2)

x = 6 - 2y

substitute into (1)

3x-y=4

3(6 - 2y) - y = 4

18 - 6y - y = 4

- 6y - y = 4 - 18

-7y = -14

y = 2

Substitute into

x+2y=6

x + 2(2) = 6

x + 4 = 6

x = 6 - 4

x = 2

2. 2x-y= -39

x+y= -21

From (2)

x = -21 - y

substitute into

2x-y= -39

2(-21 - y) - y = -39

-42 - 2y - y = -39

- 2y - y = -39 + 42

- 3y = 3

y = 3/-3

y = -1

substitute into

x+y= -21

x + (-1) = -21

x - 1 = -21

x = -21 + 1

x = -20

3. 2x+y =11

6x-5y =9

Learn more about linear equation:

brainly.com/question/4074386

#SPJ1

6 0
2 years ago
What is the slope for 10,15 and 15,20
makvit [3.9K]
So it will be y1-y2, so 15-20 is -5

Then x1-x2, so 10-15 is -5.

-5/-5 = 1

There’s ya slope : 1
6 0
3 years ago
WILL GIVE BRANLIEST PLZZZ ASAP
Eddi Din [679]
It should be to the right by 2 and up by 2 i’m not to sure tho :/

3 0
3 years ago
Two solution of salt water contain 0.03% and 0.23 salt respectively. A lab technician
n200080 [17]

Answer:

  • 750 mL of 0.23% solution
  • 250 mL of 0.03% solution

Step-by-step explanation:

Let x represent the quantity (in liters) of the higher percentage solution, the 0.23% solution. Then 1-x will be the quantity of 0.03% solution. The amount of salt in the mix is ...

  0.23%·x +0.03%·(1 -x) = 0.18%·1

Multiply by 100% and subtract 3:

  20x = 15

  x = 15/20 = 0.75 . . . . liters of 0.23% solution

  1-x = 1-0.75 = 0.25 . . liters of 0.03% solution

The lab tech needs 750 mL of 0.23% solution and 250 mL of 0.03% solution.

4 0
4 years ago
Find the value of y.
kondaur [170]
.......................

5 0
4 years ago
Read 2 more answers
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