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Vlad [161]
3 years ago
13

FIRST CORRECT ANSWER WILL GET BRAINLIEST!!!

Mathematics
1 answer:
Mars2501 [29]3 years ago
4 0
Their are 6 equilateral triangles in a regular hexagon:
The area of one triangle = (x²√3)/4, then:
1st answer: The area of the hexagon base: is  6 TIMES the area of one equilateral triangle [or, needed for 2nd, question, TOT AREA:(6x²√3)/4] = (3x²√3)/2] unit²

2nd answer: :
Volume of pyramid: (base area)(height)/3
Volume of pyramid: (3x²√3).(3x)/3 (because height = 3x, given)
Then Volume of pyramid= 3x³√3 unit³.
3 is the answer for the second question
and 6 for the 1st
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Cos (-Ø)= √3/3 sinØ <0 what is the value of sinØ?
Inga [223]

Answer:

sin∅= - √6/3

Step-by-step explanation:

Trigonometric function cos is even function which mean:

cos (-∅) = cos ∅

Trigonometric function sin is odd function which mean:

sin (-∅) = - sin∅  => sin∅ < 0

The basic trigonometric equation reads in this case with angle marked ∅:

sin²∅ + cos²∅ = 1  => sin²∅ = 1 - cos²∅ => sin²∅ = 1 - ( √3/3 )² =>

sin²∅ = 1 - (3/9) => sin²∅ = 1 - (1/3) = (3/3) - (1/3) = 2/3 => sin∅ = - √(2/3) =>

sin∅ = - √2/√3 => sin∅ = - √6/3

God with you!!!


3 0
3 years ago
9=1.5z how do you solve it I need to know
Alex_Xolod [135]
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3 0
3 years ago
Read 2 more answers
Ahmad,Barry,andTara collected some seashells.Ahmad collected 1 over 6 of the seashells,Barry collected 1and 2 of thr seashell, a
VashaNatasha [74]
Ahmad = 1/6 
Barry = 1/2
Tara = 1 - 1/6 - 1/2 = 1/3

1/3 of the seashells = 76
3/3 of the seashells = 76 x 3
3/3 of the seashells = 228

----------------------------------------------------------------------------
Answer: They had 228 seashells altogether.
----------------------------------------------------------------------------
4 0
3 years ago
The length of a rectangular field is 4 meters less than 5 times the breadth of the hall. What is the length, if the breadth is b
vlabodo [156]
IF BREADTH=b meters
THEN LENGTH=4 meter less than 3 times than the breadth of the hall.
LENGTH=3b-4 meters
the length of the rectangular hall is=3b-4 meters
4 0
2 years ago
What is the image of the photo and the preimage?
Anna [14]

Answer:

a shape with 4 sides

Step-by-step explanation:

duh

7 0
3 years ago
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