2 years ago

Triangles-- find the M<ECD if ABC angels are 31 degress.picture added

Mathematics

1 answer:

never [62]2 years ago

5 0

Answer:

Step-by-step explanation:

180° - 2 × 31° = 118° is measure of an angle which is vertical to ∠ECD ⇒

m∠ECD = 118°

You might be interested in

Which graph shows the solution to the equation below? log Subscript 3 Baseline (x + 3) = log Subscript 0.3 (x minus 1)

weqwewe [10]

Answer:

The answer is 20

Step-by-step explanation:

(Edge2020)

8 0

3 years ago

Read 2 more answers

tonya is twice kevin's age. in three years tonya will be 17. and in another three years, uncle rob will be three times tonyas ag

atroni [7]

Tonya is 14 (17 - 3)
<span>Kevin is 7 </span>
<span>Uncle Rob is 51 (3 x 17 = 54, less 3)</span>

3 0

3 years ago

Read 2 more answers

Find the value of x.

andrey2020 [161]

Answer:

sum of an exterior angle is 360

2x+56+85+57+4x=360

6x+198=360

6x=360-198

6x=162

x=162/6

x=27

7 0

2 years ago

Find the value of c that completes the square

PilotLPTM [1.2K]

Answer:

The value of c that completes the square $x^2+2x+c$ is 1

Step-by-step explanation:

We need to find the value of c that completes the square $x^2+2x+c$

The formula used will be: $a^2+2ab+b^2=(a+b)^2$

In the question given the value c can be found by breaking the middle term. we are given 2x while the general formula is 2ab for middle term so,

2(x)(1) = 2x

so, c= 1

Solving:

$x^2+2x+c\\=x^2+2(x)(1)+(1)^2-(1)^2\\=(x+1)^2-1$

So, the value of c that completes the square $x^2+2x+c$ is 1

6 0

2 years ago

What is the area of the trapezoid?

IRINA_888 [86]

Answer:

69.75 square inches

Step-by-step explanation:

Add the top and bottom lengths then divide by 2 before multiplying it with the height

1/2x(3+12.5)=7.75

7.75x9=69.75

4 0

2 years ago

Read 2 more answers

Triangles-- find the M<ECD if ​ABC angels are 31 degress.picture added​

Triangles-- find the M<ECD if ABC angels are 31 degress.picture added