All categories

3 years ago

Describe and correct the error in finding DC

Mathematics

1 answer:

sleet_krkn [62]3 years ago

6 0

Answer:

DC = 2

Step-by-step explanation:

The wrong equation was used.

The right equation to use based on the midsegment theorem of a trapezoid is:

MN = ½(AB + DC)

MN = 8

AB = 14

Substitute

8 = ½(14 + DC)

Multiply both sides by 2

8*2 = ½(14 + DC)*2

2*8 = 14 + DC

16 = 14 + DC

16 - 14 = 14 + DC - 14

2 = DC

DC = 2

You might be interested in

Why is it helpful to represent fractions and division with models?

solniwko [45]

Answer:

R fraction visual models are incredibly effective for teaching fraction concepts. Conceptual understanding means knowing the meaning of a numerators and a denominators. As well as understanding what actually happens when we perform fraction operations.

Step-by-step explanation:

4 0

3 years ago

I neeeeeeed Help please!

pochemuha

Answer:

i ask your teacher

Step-by-step explanation:

ask your teacher instead of asking for answers

4 0

4 years ago

Point C is the Image of C (-4,-2) under a Reflection across the x-axis.

Svetradugi [14.3K]

Step-by-step explanation:

$\text {Reflection Rule for across the X-axis: } (x,y) \rightarrow (x,-y)$

Using the point C (-4,-2) and the refection rule:

$(-4,-2) \rightarrow(-4, 2)$

$\text {C' should be (-4,2)}$

8 0

3 years ago

System of equations <br> 5x+y=7<br> 20x+2=y

KIM [24]

Dependent

The general form for a pair of linear equations in two variables x and y is
and

----- (1)
----- (2)
Comparing equations 1 and 2 with the general form of equation to write their co-efficient,

Compare the ratio,

If , then the pair of linear equations has exactly one solution.
So, it said to be consistent.

7 0

4 years ago

Supply the missing reasons to complete the proof

Sladkaya [172]

3. Congruent by AAS

4. CPCTC

8 0

3 years ago