1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Andrews [41]
3 years ago
9

What is the measure for ECD

Mathematics
1 answer:
Nostrana [21]3 years ago
7 0

Answer:

118

Step-by-step explanation:

a triangle is 180 degrease and two sides that are equal to each other which means the angles across from them have the same thing.

so. 180-31-31=118

You might be interested in
Can someone please help me with this proof?!
Elza [17]

Answer:

because AC and BD bis => AX = XC; BX = XD

ΔAXD ≅ ΔCXB (SAS) because: AX = CX

                                                    DX = BX

                                                    m∠AXD = m∠BXC ( 2 opposing angles)

because ΔAXD ≅ ΔCXB (SAS)

=> AD = BC and m∠DAX = m∠BCX

because m∠DAX = m∠BCX => AD//BC

ABCD has AD = BC and AD//BC => ABCD is a parallelogram

Step-by-step explanation:

4 0
3 years ago
X+9=2x-3<br> FIND THE X!!!!!!
Ierofanga [76]

Answer:

x = 12

Step-by-step explanation:

<u>To find "x"</u>, we need to <u>isolate it</u>. This means move "x" to the left side, and everything else to the right side.

When moving a number, do its <u>reverse operation</u> to the entire equation.

x + 9 = 2x - 3

x - 2x + 9 = 2x - 2x - 3         Subtract 2x from both sides

-x + 9 = -3                              

-x + 9 - 9 = -3 - 9           Subtract 9 from both sides

-x = -12

-x/-1 = -12/-1          Divide both sides by -1 to get rid of the negatives

x = 12                     Final answer

Check your answer. Split the equation for the left and right sides. Substitute "x" for the answer "12".

LS:   (left side)

x + 9

= 12 + 9              Add

= 21

RS:   (right side)

2x - 3

= 2(12) - 3            Multiply before subtracting

= 24 - 3               Subtract

= 21

Both sides equal to 21 when "x" is 12.

LS = RS          left side equals right side

Therefore the answer is correct.

3 0
3 years ago
What is the mode of the following set of numbers: 10, 20, 30, 20, 30, 10, 30, 20, 30, 15 *
likoan [24]

Answer:

A. 30

Step-by-step explanation:

Because it showed up the most

6 0
3 years ago
Read 2 more answers
PLEASE HELP ME!!!!
Nat2105 [25]
8 * 2 * 10 = 160 * 10 = 1600
7 0
3 years ago
HELP HURRY
WINSTONCH [101]
The first option is the answer, it is going from P to Q so the only logical answer would be the first choice
7 0
3 years ago
Other questions:
  • PLEASE HELP ASAP!!! 30 PTS
    7·1 answer
  • Whats 20+1 :3 i hope you lie it!
    12·1 answer
  • At soccer​ training, the team ran for 6 minutes at 10 miles per hour. Your friend incorrectly says that the team ran a distance
    11·1 answer
  • Slove for x 2m-nx=x+4
    6·1 answer
  • What this whole unit thing about can someone help me with the answer and explain plz:)
    14·1 answer
  • Help with this math question... Leslie created a rectangle on the coordinate plane. Three of the vertices are (5,-2), (5,2), (2,
    12·1 answer
  • How do I solve this problem?
    8·1 answer
  • Y=x2+8x+10. complete the square
    9·2 answers
  • Show me step by step multiplication on how to answer : 1 2/5 x 1/4
    5·1 answer
  • Suppose that weights of bags of potato chips coming from a factory follow a normal distribution with mean 12.8 ounces and standa
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!