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Paha777 [63]
3 years ago
15

Simplify the following expression: x^2+y^2

Mathematics
1 answer:
Vinil7 [7]3 years ago
5 0

Answer:

({x + y})^{2}  - 2xy \\  {(x - y)}^{2}  + 2xy

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Solve each equation:<br> 5x=1
erastovalidia [21]

Answer:

5x=1

Step-by-step explanation:

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6 0
3 years ago
See ss below<br>please show all work ​
____ [38]
Answer:

x = 117km

Step-by-step explanation:

a1 = 18 km

q = 90% = 90/100 = 0.9


a2 = a1 • q = 18 • 0.9 = 81/5 = 16.2 km

a3 = a2 • q = 16.2 • 0.9 = 729/50 = 14.58 km

n = 10

x = a1 • q^n - 1/q - 1 = 18 • 0.9^10 - 1/0.9 - 1 = 117km



7 0
3 years ago
Read 2 more answers
Jonas is planning to use part of the land behind his house to have a soccer field. Jonas plots his soccer field plan on a grid.
Helga [31]

Answer:

The other two vertices have coordinates (4,4) and (10,8). He will need 40 meters of fence for the soccer field. And inside the fence there are 48 square meters, which is a 24% of the total surface of the land behind his house, assuming it is a square of 10 meters of lengt and 10 meters of width.

Step-by-step explanation:

Since the coordinates must form a rectange, then, the other two location must be (4,4) and (10,8) (each coordinate must have something in common with the coordinates of the 2 locations we were given).

The sides of the fence have length 8-4 = 4, and 10-4 = 6. Thus, the perimeter of the fence is 2*4+2*6 = 20 units. Since each unit is 2 meters, then that means that Jonas will need 40 meters of fence.

The area inside the fence is 6*4 = 24 square units, therefore it is 48 square meters, and assuming that the grid goes from 0 to 10 in both coordinates, the area of the land behind his house is 10*10 = 100 square units, thus it is 200 square meters. He is using 48/200*100  = 24% of the land for the soccer field.

6 0
3 years ago
Determine a rational number in between -2 1/4 and -2.8 justify and graph where it would be on a number line
Nitella [24]

Answer:

Its going to be on the -5, 0 point

Step-by-step explanation:

5 0
3 years ago
A rubber ball is bounced from a height of 9 meters and bounces continuously .Each successive bounce reaches a height that is a t
klio [65]

Answer: 54

Step-by-step explanation: If the ball bounces 3 times at first that would be 9 x 3 which equals 27. But if you bounce it 6 times, that would be 9 x 6 which equals 54. :)

8 0
3 years ago
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