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nalin [4]
2 years ago
12

Please help due soon

Mathematics
1 answer:
Fittoniya [83]2 years ago
4 0

Answer:

D) right scalene

Step-by-step explanation:

Triangles are classified by their largest angle. The largest angle is a right angle, which is the little box.

Isosceles triangles have two sides that are the same. Whereas scalene triangles have three side lengths that are different.

Right scalene is the answer.

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2x - 3y = 9; 2x + y = 13
olga2289 [7]

Answer:

See explanations below

Step-by-step explanation:

Given the simultaneous equations;

2x - 3y = 9... 1

2x + y = 13 ... 2

From 2;

y = 13-2x

Substitute into 1;

2x - 3(13-2x) = 9

2x -39 + 6x = 9

8x - 39 = 9

8x = 9+39

8x = 48

x = 6

Since y  = 13-2x

y = 13-2(6)

y = 13-12

y = 1

The soluton to the system of equation is (6, 1)

Given the equations;

99x + 101y = 499; .... 1 * 101

101x + 99 y = 501 ... 2 * 99

______________

9999x + 10,201y = 50,399

9999x + 9801y = 49,599

Subtract

10201y - 9801y = 50399-49599

400y = 800

y = 2

Substitute y = 2 into 1;

From 1;

99x + 101y = 499

99x + 101(2) =499

99x +202 = 499

99x = 499 - 202

99x = 198

x = 198/99

x =2

Hence the solution is (2,2)

For the equations;

49x - 57y = 172 .... * 57

57x - 49y = 252 __ * 49

____________________

2793x -3249y =  9804

2793x - 2401y = 12348

Subtract

-3249y+2401y = 9804-12348

-848y = -2544

y = 3

Substitute into 1;

49x - 57y = 172

49x - 57(3) = 172

49x - 171 = 172

49x = 171+172

49x = 343

x = 7

Hence the solution is (7, 3)

8 0
2 years ago
The first triangle is dilated to form the second triangle.
aalyn [17]
0.4 is false and 2.5 is true, bigger than 1 means increase.
8 0
3 years ago
The endpoints of DE and D(-3, y) and x, 6). The midpoint of DE is M(4,2). What is the length of DE.
Natasha_Volkova [10]

If the endpoints of DE where D(-3, y) and E(x, 6) with the midpoint M(4, 2), the length of DE is 16.12 units

The formula for calculating the midpoint is expressed as;

M(x,y)=(\frac{x_1+x_1}{2}, \frac{y_1+y_2}{2})

For the x-coordinate points:

X = -3+x/2

4 * 2 = -3 + x

8 = -3 + x

x = 8 + 3

x = 11

Get the value of y;

2 = y+6/2

y+6 = 2 * 2

y + 6 = 4

y = 4 - 6

y = -2

Hence the coordinates of D and E are D(-3, -2) and E(11, 6)

D=\sqrt{(6-(-2))^2+(11-(-3))^2}\\D=\sqrt{8^2+14^2}\\D=\sqrt{64 + 196}\\D=   \sqrt{260}\\D= 16.12units

Hence the length of DE is 16.12 units

Learn more here; brainly.com/question/22624745

3 0
2 years ago
I would really appreciate it if someone could answer this I will give a brainlist:)
PilotLPTM [1.2K]

5.7

Pythagorean Theorem is a² + b² =  c²

8 0
3 years ago
Read 2 more answers
A triangle has a 90 degree angle and two sides that measure 5cm in length. Read the statements
mihalych1998 [28]

Answer:

Yes   (True)

Step-by-step explanation:

3 0
3 years ago
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