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liberstina [14]
3 years ago
8

J= -8c^2 - 4cd - d^2 k= -3c^2 +7cd - 3d^2 j+k =

Mathematics
1 answer:
irina [24]3 years ago
6 0
J=-8c²-4cd-d²
k=-3c²+7cd-3d²
j+k=
-8c²-4cd-d²-3c²+7cd-3d²
-11c²-4d²+3cd
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Does anyone know this one I would really need help ​
Novay_Z [31]

Answer:

10

Step-by-step explanation:

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7 0
3 years ago
The perimeter of a rectangle is 46 millimeters. The length of the rectangle can be represented by (3x+3), and its width can be r
Tamiku [17]

Answer:

The dimension of this rectangle = 2mm by 21mm

Where 2 mm = Width of the rectangle

21 mm = Length of the rectangle.

Step-by-step explanation:

The formula for the perimeter of a rectangle = 2(L + W)

= 2L + 2W

The perimeter = 46 mm

L = 3x + 3

W = x - 4

P = 2L + 2W

46mm = 2(3x + 3) + 2(x - 4)

46 = 6x + 6 + 2x - 8

Collect like terms

46 +8 -6 = 6x + 2x

48 = 8x

x = 48/8

x = 6

Since the Length = 3x + 3

= 3(6) + 3

= 18 + 3

= 21mm

Since the Width = x - 4

= 6 - 4

= 2mm

Therefore, the dimension of this rectangle = 2mm by 21mm

Where 2 mm = Width of the rectangle

21 mm = Length of the rectangle.

8 0
3 years ago
Employee x earned $5250 in 3 weeks. at this rate how much will employee x earn in 8 weeks
iVinArrow [24]

Answer:

$14000

Step-by-step explanation:

Given parameters:

Amount earned by employee x  = $5250

Time duration  = 3weeks

Unknown:

Amount earned in 8 weeks = ?

Solution:

Let us first find the rate of employee x earning;

       Rate  = \frac{Amount earned}{Time duration}  

Insert parameters;

      Rate  = \frac{5250}{3}  = $1750/week

So,

  In 8 weeks;

      Amount earned  = rate x time duration

      Amount earned  =  $1750/week x 8weeks

      Amount earned  = $14000

8 0
2 years ago
As of July 1, 2014, the population of India was about 1,267,000,000. How can you write this number in scientific notation?
skelet666 [1.2K]

Answer:

1 I think its 1.267000000

Step-by-step explanation:

4 0
3 years ago
(4 + 3x + x2) + (6 – 9x + x2)
Gnoma [55]
If your looking for a simplified answer, it would be 2x^2-6x+10.

Hope this helps.
3 0
3 years ago
Read 2 more answers
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