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3 years ago

Which of the following has four faces

Mathematics

2 answers:

Lynna [10]3 years ago

7 0

Answer:

Le answer shalt be tetrahedron.

Marysya12 [62]3 years ago

3 0

C. The Tetrahhedron has 4 faces, all of which are triangles. It also has four vertices and six edges.

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How do you find the sum of a geometric series?!!!

Ksivusya [100]

Answer:

To find the sum of an infinite geometric series having ratios with an absolute value less than one, use the formula, S=a11−r , where a1 is the first term and r is the common ratio.

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3 years ago

In ΔCDE, \overline{CE}

abruzzese [7]

Answer:

$m\angle CDE=14^o$

Step-by-step explanation:

we know that

An exterior angle of a triangle is equal to the sum of the opposite interior angles.

see the attached figure to better understand the problem

∠DEF=∠ECD+∠CDE

substitute the given values

$(4x+5)^o=(x+9)^o+(x+8)^o$

solve for x

Combine like terms

$(4x+5)^o=(2x+17)^o$

Group terms

$4x-2x=17-5$

$2x=12$

$x=6$

Find the measure of angle CDE

$m\angle CDE=(x+8)^o$

substitute the value of x

$m\angle CDE=(6+8)=14^o$

8 0

3 years ago

What is the next number 9 16 24

Gemiola [76]

Its gonna be 9,16,24,33

8 0

4 years ago

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If \: x + y + z = 0 \: then \: show \: that \: {x}^{3} + {y}^{3 } + {z}^{3} =3xy<br>

tankabanditka [31]

Answer:

Given

x+y+z=0

⟹x+y=−z

Cubing on both sides

(x+y) 3 =(−z) 3

⟹x 3 +y 3 +3x 2y+3xy 2 =−z 3

⟹x 3 +y 3 +3xy(x+y)=−z 3

⟹x 3+y 3+3xy(−z)=−z 3

⟹x 3 +y 3−3xyz=−z 3

⟹x 3 +y 3 +z 3 =3xyz

Step-by-step explanation:

Hope it is helpful.....

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3 years ago

Is 1.1717717771 a rational number

Lynna [10]

The answer is going to be yes it's rational. hope that helped

5 0

3 years ago

Read 2 more answers