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aleksandrvk [35]
3 years ago
5

12% of 72 is what number

Mathematics
2 answers:
kozerog [31]3 years ago
5 0

Answer:

8.64

Step-by-step explanation:

Gekata [30.6K]3 years ago
5 0

8.64

12\;percent\;of\;72=8.64

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90 POINTS PLEASE HELP Describe the three main trigonometry functions, their ratios and reciprocal functions.
snow_lady [41]

Answer and Step-by-step explanation:

There are three reciprocal trigonometric functions

making a total of six including cosine, sine, and tangent.

→The reciprocal cosine function is secant: sec(Ф)=1/cos(Ф).

→The reciprocal sine function is cosecant, csc(Ф)=1/sin(Ф).

→The reciprocal tangent function is cotangent, expressed two ways: cot(Ф)=1/tan(Ф) or cot(Ф)=cos(Ф)/sin(Ф).

We've already learned the basic trig ratios:

sin(A) = a/c

cos(B) = b/c

tan(C) = a/b

   

But there are three more ratios to think about:

→Instead of  a/c, we can consider c/a  

​→Instead of  b/c, we can consider c/b  

→Instead of  a/b, we can consider b/a  

These new ratios are the reciprocal trigonometric ratios, and we’re about to learn their names.

<u>The cosecant (csc)</u>

The <u>cosecant</u> is the reciprocal of the sine. It is the ratio of the hypotenuse to the side opposite a given angle in a right triangle.

sin(A) = opp / hyp  = a/c

csc(A) = hyp / opp = c/a

<u>The secant (sec)</u>

The <u>secant </u>is the reciprocal of the cosine. It is the ratio of the hypotenuse to the side adjacent to a given angle in a right triangle.

cos(A) = adj/hyp = b/c

sec(A) = hyp/adj = c/b  

<u>The cotangent (cot)</u>

The <u>cotangent </u>is the reciprocal of the tangent. It is the ratio of the adjacent side to the opposite side in a right triangle.

tan(A) = opp/adj = a/b

cot(A) =adj/opp = b/c

7 0
3 years ago
Need help asap please​
Pepsi [2]

Step-by-step explanation:

first of all, your teacher wrote nonsense in the answer options : an area is always given in squared units. never in cubed units (which would be volume).

the area is : 1/2 × perimeter × apothem

the perimeter is simply 12 × 5 = 60 meters.

apothem = (a/2)×cot(pi/12) = 5/2 × cot(pi/12) =

= 9.330127019... meters

so the area is

1/2 × 60 × 9.330127019... = 279.9038106... m²

therefore, the third answer option is correct (although it is m², and not m³).

by the way, you have question 3 wrong. I answered this with the correct apothem calculation in the explanation for question 4.

5 0
2 years ago
Five times the difference of a number and 2 is the same as 2 increased by five times the number plus twice the number. Find the
Makovka662 [10]

Welcome to Brainly!

5(n-2) = 2+5n + 2n fits your equation.  After multiplication, we have

5x - 10 = 2 + 7n

Combining like terms, we get:

-12 = 2n, so that n = -6.


8 0
3 years ago
Read 2 more answers
What is the ratio as a fraction in lowest term for $300 to $450 ?
Advocard [28]
Just divide 300 by 450, to get 0.66667, which can be expressed as a fraction by 2/3
5 0
3 years ago
What is the sum of the measures of the interior angles of a 13 sided polygon
Snezhnost [94]
Sum of all interior angles of a polygon

180( n - 2)   where n = number of sides in the polygon

now, if n = 19, the polygon has 19 sides, then 180( 19 - 2)
5 0
3 years ago
Read 2 more answers
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