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Mashutka [201]
3 years ago
14

9 - x2 + 2xy - y2 Factorise

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

9-x.2+2xy-y.2

9-2x+2xy-2y

-2x+2xy-2y+9

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Germany Ron 7 miles per week and increase his distances by 1 mile in each week tell tony runs 3 miles per week and increases his
Lelechka [254]
X represents the amount of weeks:
7+x for Germany and 3+2x for Tony they have to be equal for them to run the same distance:
3+2x=7+x
-3 from each side:
2x=4+x
-x from each side:
x=4
They run the same distance on the fourth week, that distance is 7+4=11

Hope this helps :)
4 0
3 years ago
Find the differential equation of dy/dx=(3x+y+4)^2
sp2606 [1]
67 is the correct answer
5 0
3 years ago
Read 2 more answers
PLEASE ANSWER!!! <br> You don’t have to do number 25 *****
Ilia_Sergeevich [38]

Answer:

see explanation

Step-by-step explanation:

The directed lines have the form < x, y >

With the usual notation

right in x- direction → +

left in x- direction → -

up in y- direction → +

down in y- direction → -

21

EF = < 4, 1 >

22

FG = < 4, - 2 >

23

GH = < - 4, - 2 >

24

EH = < 4, - 3 >

8 0
3 years ago
PLEASE HELP I WILL MARK BEAINLIST
Vlada [557]

Answer:

5981.25 m²

Step-by-step explanation:

1. Divide the court into two sections. One section being the semicircle, the other being the rectangle.

2. Multiply 100 by 50 to get the area of the rectangle, which is 5000.

3. Divide 50 by 2 to get the radius of the semicircle, which is 25.

4. Find the formula used for area of a semicircle A = \frac{1}{2}\pir²

5. Insert 25 into where the "r" is in the equation: A = \frac{1}{2}\pi(25²), resulting in about 981.25. (I replaced \pi with 3.14)

6. Add the area of the rectangle with the area of the semicircle, 5000 + 981.25 = 5981.25.

7. The final answer is 5981.25 m².

6 0
3 years ago
You and your friend are standing back to back. Your friend runs 20 feet forward and then 15 feet right. At the same time, you ru
marta [7]
I think its 32 because he runs 20 you run 12 you ran right no forward or backward. hope this helps good luck

5 0
3 years ago
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