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3 years ago

Can someone help me, i am very confused, i need to find the volume of the figure put i dont know how

Mathematics

1 answer:

Hoochie [10]3 years ago

3 0

Ok so what you need to know about an octahedron is it's basically two square pyramids stacked on top of each other (one is upside down of course).

The formula for volume of a pyramid is Bh/3.
Base= 8*8=64
Height= 3 each
64*3/3= 64 mm^3 per pyramid.

64*2=128 mm^3 for the octahedron

Final answer: 128 mm^3

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adell [148]

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3 years ago

A scale drawing of a building needs to be made using the scale 1 in = 200 ft. How tall will the building in the scale drawing be

givi [52]

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3 years ago

4) -4y= -x + 4 6) y + 3x = 3

wel

Answer:

x=16/13

y= -9/13

Step-by-step explanation:

A: -4y=-x+4

B: y+3x=3

4B: 4y+12x=12

A+4B: 12x= -x+16

-----> 13x=16

x=16/13

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4y=16/13-4

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4 0

3 years ago

What is the slope of the line for the cost of subs at Sam's sub shop???

ra1l [238]

Answer:

5.5

Step-by-step explanation:

11 divided by 2 is 5.5

22 divided by 4 is 5.5

44 divided by 8 is 5.5

3 0

3 years ago

Kate has two lengths of ribbon. the pink ribbon is 4 6/12 feet long, and the purple ribbon is 2 4/12 feet long. how much ribbon

Vlad1618 [11]

Data:
Kate has two lengths of ribbon
pink ribbon = $4 \frac{6}{12} \;feet$
purple ribbon = $2 \frac{4}{12} \;feet$

How much ribbon does kate have in all?
pink ribbon + purple ribbon

Solving:
 $4\frac{6}{12} + 2\frac{4}{12} = \frac{12*4+6}{12} + \frac{12*2+4}{12} = \frac{48+6}{12} + \frac{24+4}{12} = \frac{54}{12} + \frac{28}{12} = \frac{82}{12} =$
$\frac{82}{12} \:simplify\: \frac{\div2}{\div2} = \boxed{\boxed{\frac{41}{6} \:or\:6 \frac{5}{6} }}\end{array}}\qquad\quad\checkmark$

Answer:
Kate has it all $6 \frac{5}{6}$ of ribbons

4 0

3 years ago