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Serjik [45]
2 years ago
12

22. Find the perimeter of the square: 28

Mathematics
1 answer:
sergejj [24]2 years ago
7 0

Answer:

  56√2 ≈ 79.20

Step-by-step explanation:

The hypotenuse of an isosceles right triangle is √2 times the side length, so the side length here is ...

  s·√2 = 28

  s = 28/√2

The perimeter is 4 times the side length, so is ...

  P = 4s = 4·28/√2

  = 4·28·(√2)/2 . . . . . multiply by (√2)/(√2) to rationalize the denominator

  = 56√2 ≈ 79.195959

The perimeter of the square is 56√2, about 79.20 units.

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Can someone please help me please !
TEA [102]

Answer:

Step-by-step explanation:

GH : √(8-4)^2 + (2-5)^2 = √16+9 = √25 = 5

HI : √(-6-2)^2 + (2-8)^2 = √64+36 = √100 = 10

IJ : √(-2-2)^2 + (-3+6)^2 = √16 + 9 = √25 = 5

JH : √(-2-4)^2 + (-3-5)^2 = √36 + 64 = √100 = 10

Slope of the line that contains GH

(2-5)/(8-4) = -3/4

Slope of the line that contains HI

(-6-2) / (2-8) = 8/6 = 4/3

I calculated the distance between points. Thanks to that I noticed that the opposite sides are congruent, so the quadrilateral can be a rectangle or a parallelogram. So I found the slope of the lines that contain two consecutive sides and I discovered that are perpendicular. So the quadrilateral is a rectangle because its angles are all of 90 degrees

5 0
3 years ago
Which ordered pairs are solutions to the inequality 4x + y>-6
Dafna1 [17]

Answer:

(-1,-1)(2,0)(4,-20)

Step-by-step explanation:

(-1,-1) = -5 › -6 √

(0,-9) = -9 › -6 ×

(2,0) = 8 › -6 √

(-3,6) = -6 › -6 ×

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3 0
3 years ago
I need help question below
elena-14-01-66 [18.8K]

Answer:

15:24 will be your anwser

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2 years ago
The volume of which shapes can be found using the formula V = Bh?
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Answer:

Triangular pyramid and Rectangular prism

Step-by-step explanation:

There are several different uses of the formula V = BH. For example, we used the formula V = BH for a cylinder, a rectangular prism, and a triangular pyramid. But be careful! All of the elements in the formulas don't mean the same! I really hope this helps you a bit!

5 0
3 years ago
Solve each system by substitution.
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Y=-6x+1
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plug second equation into first and you get

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then plug x into first equation and you get that y=-6*1 +1 = -6+1=-5

therefore x=1 and y =-5
8 0
2 years ago
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