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3 years ago

How to find the missing side of this triangle

Mathematics

1 answer:

Aleksandr [31]3 years ago

3 0

Answer

3√21 cm

I hope it helps

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Allen is showing his work in simplifying -8.3 + 9.2 - 4.4 + 3.7. Identify and explain any errors in his work or in his reasoning

Alexandra [31]

2 is the answer for this question

4 0

3 years ago

Help Me!

puteri [66]

Answer:

Given:

DC ║ AB
CM = MB as M is midpoint of BC

i) Since DN and BC are transversals, we have:

∠DCM ≅ ∠NBM and
∠CDM ≅ ∠BNM as alternate interior angles

As two angles and one side is congruent, the triangles are also congruent:

ΔDCM ≅ ΔNBM (according to AAC postulate)

So their areas are same.

ii)

The quadrilateral has area of:

A(ADCB) = A(ADMB) + A(DCM)

And the triangle has area of:

A(ADN) = A(ADMB) + A(NBM)

Since the areas of triangles DCM and NBM are same, the quadrilateral ADCB has same area as triangle ADN.

5 0

3 years ago

Read 2 more answers

What is the surface area of the cube below? 9 9 9

Natali5045456 [20]

Answer:

$A_s=486\ units^2$

Step-by-step explanation:

Remember that the sides of a cube always have the same length.

In this case the length of the sides L is:

$L = 9$ .

The cubes have 6 faces. Then the surface area of the cube is equal to the area of its 6 faces.

Since all sides of the cube have the same measure, then the area of each face is:

$A = L ^ 2$

Then the area of the 6 faces is:

$A_s = 6L ^ 2$

$A_s = 6 * (9 ^ 2)$

$A_s=486\ units^2$

3 0

3 years ago

The difference of the square of a number and 18 is equal to 3 times that number. Find the positive solution.

taurus [48]

4 0

3 years ago

Read 2 more answers

What is the mass, in grams, of a liquid having a density of 1.50 g/ml and a volume of 3.50 liters

valina [46]

Answer:

5250 g

Step-by-step explanation:

Given : Density of liquid is 1.50 g/ml

Volume of liquid is 3.50 liters

Solution :

Since 1 liter = 1000 ml

So, Volume of liquid is 3.50 liters = 3.5*1000 = 3500 ml.

Now $volume = \frac{mass}{density}$

$3500 = \frac{mass}{1.50 }$

$3500 * 1.50=mass$

$5250 g = mass$

Hence , the mass of the liquid is 5250 g.

3 0

3 years ago