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Dafna1 [17]
2 years ago
14

PLEASE HELP MEEEEEEEEE

Mathematics
2 answers:
Ray Of Light [21]2 years ago
8 0
It’s 5 because if you multiply and divide
wariber [46]2 years ago
3 0

Answer:

Step-by-step explanation:

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Help? im confused plss!<br> Find the area of the regular polygon with the given radius or apothem
Snezhnost [94]

Answer:

  50 cm²

Step-by-step explanation:

Given that the regular polygon is a square, there are multiple ways you can jump directly to the answer. Perhaps the simplest is to use the formula for the area of a rhombus:

  A = 1/2(d1)(d2)

where d1 and d2 are the lengths of the diagonals. Here, we see that half the diagonal is 5 cm, so the area is ...

  A = (1/2)(10 cm)(10 cm) = 50 cm² . . . . area of the polygon

__

<em>Alternate solution</em>

If you want to use the radius and the number of sides in a formula, you can consider the area of each triangle formed by radii and a side. That triangle has area ...

  A = 1/2r²sin(α)

where r is the radius and α is the central angle. For an n-sided polygon, the area is the sum of n of these triangles, and the central angle is 360°/n. Then the polygon area is ...

  A = n/2·r²·sin(360°/n)

For n = 4 and r = 5 cm, the area is ...

  A = (4/2)(5 cm)²(sin(360°/4)) = 2(5 cm)²(1) = 50 cm² . . . . area of square

_____

<em>Additional comment</em>

The formula is somewhat different if you start with the length of the apothem. One way to find the area is using the above formula and the relation between the radius and apothem:

  r = a·sec(180°/n)

Another formula uses the apothem directly:

  A = n·a²·tan(180°/n)

8 0
2 years ago
Identify the sets of lines to which the given line is a transversal. Line m
Alekssandra [29.7K]

Answer:

Only J and I

Step-by-step explanation:

Transversal Lines are only transversal to sets of parallel lines in which they pass through and P is not parallel to any.

8 0
2 years ago
10.2Which ratio is proportional to
hram777 [196]
Divide by 2.  10/2 divided by 2 = 5/1

5 0
2 years ago
Each of the following correctly match an English phrase with a mathematical expression
pshichka [43]
Each of the following correctly match an English phrase with a mathematical expression except _____. 


<span>A) a number times seven, 7x </span>
<span>B) a number subtracted from seven, 7 - x </span>
<span>C) the sum of a number and seven, 7 + x </span>
<span>D) a number divided by 7, 7/x 

if this is ur question...answer is D...should be x/7</span>
4 0
2 years ago
In the coordinate plane, choose the graph with the conditions given.<br><br> x = -3
finlep [7]

You have not given any graphs to choose from but x=-3 would be the graph that has a vertical line running through every point that has -3 as an x coordinate and would cross the x axis (the horizontal axis) at -3

5 0
3 years ago
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