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Tasya [4]
2 years ago
14

Please help me with this!!!

Mathematics
1 answer:
Nostrana [21]2 years ago
5 0

Answer:

Below in bold

Step-by-step explanation:

I AM ASSUMING that CDEF is a Rhombus.

If it is than triangle DEG is right-angled.

so 2x + 18 + 5x + 2 = 90.

7x = 90 - 20 = 70

x = 7.

So m < CDF  = 5x + 2

= 5(10) + 2

= 52 degrees.

m < DCE = 2(10) + 18 = 38 degrees.

The diagonal bisects < DCF so m < ECF = 38 degrees.

So m < DCF = 2 * 38 = 76 degrees.

Opposite angles of a rhombus are equal so m < DEF = 76 degrees.

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Solve the system by graphing.
igor_vitrenko [27]

Answer:

Hi There the correct answer is {x,y} = {-1,-10}  

 

System of Linear Equations entered :

  [1]    3x - y = 7

  [2]    4x - 2y = 16

Graphic Representation of the Equations :

   y + 3x = 7        -2y + 4x = 16  

 

 

Solve by Substitution :

// Solve equation [1] for the variable  y  

 

 [1]    y = 3x - 7

// Plug this in for variable  y  in equation [2]

  [2]    4x - 2•(3x-7) = 16

  [2]    -2x = 2

// Solve equation [2] for the variable  x  

  [2]    2x = - 2  

  [2]    x = - 1  

// By now we know this much :

   x = -1

   y = 3x-7

// Use the  x  value to solve for  y  

   y = 3(-1)-7 = -10  

Solution :

{x,y} = {-1,-10}  

Hope it helps!

8 0
2 years ago
PLEASE HELP!!!!!!
vlada-n [284]

Answer:

I believe D. B12

5 0
3 years ago
Read 2 more answers
Which dot plot has more than 1 mode?
Lyrx [107]

Answer:

The Calico Crayfish

Step-by-step explanation:

Mode is the number that appears the most.

<u>Zebra Mussel</u>

Mode: 5

<u>Shield Darter</u>

Mode: 4

<u>Calico Crayfish</u>

Mode: 5 & 8

<u>Blueback Herring</u>

Mode: 10

3 0
3 years ago
−11.9/−1<br> picture bellow is more clear
scZoUnD [109]

Answer:

11.9

Step-by-step explanation:

-11.9/-1

so the both cancel out each other

so it will just be 11.9 ,since it is -1

7 0
2 years ago
Suppose you drew a diagonal in rectangle,trapezoid,parallelogram.which figures do triangles with same shape &amp; size?
Otrada [13]
The same shape and size is the parallelogram  because if you draw a a diagonal line through the parallelogram you would get a triangle hope this helps.

8 0
3 years ago
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