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andrew11 [14]
3 years ago
11

Hey can someone please help, i dont know how to do this

Mathematics
1 answer:
yKpoI14uk [10]3 years ago
6 0
Use the tenth’s theory and herons theory u will get it
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Four congruent isosceles right triangles are cut from the 4 corners of a square with a side of 20 units. The length of one leg o
yanalaym [24]

Answer:

368 sq. units.

Step-by-step explanation:

We have a square of side lengths 20 units and we cut four congruent isosceles right triangles from the corners of the square.

Now, the four isosceles right triangles have one leg equal to 4 units.  

Therefore, the area of four triangles = 4 \times ( \frac{1}{2} \times 4 \times 4) = 32 sq. units.

Now, we have the area of the given square is (20 × 20) = 400 sq. units.

Therefore, the area of the remaining octagon will be (400 - 32) = 368 sq. units. (Answer)

7 0
4 years ago
There are 12 boys and 15 girls in your class. Four new students, 3 boys and 1 girl,join your class. Compare the ratio of boys to
UkoKoshka [18]
What I'm confused do u want us to tell u the before and after ratios or the rate of change?
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3 years ago
Read 2 more answers
3 intersecting lines are shown. A line contains points E, D, A, and B. Another line intersects the line at point A and contains
GREYUIT [131]

Answer:

The one with arrows are the answers

->Line segment E B  is bisected by Line segment D F .

->A is the midpoint of Line segment F C .

Line segment F C  bisects Line segment D B.

->Line segment E B  is a segment bisector.

->FA = One-halfFC.

Line segment D A is congruent to Line segment A B .

Step-by-step explanation:

I did it on edge and got it right

5 0
3 years ago
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Solve the simultaneous equations y=3x+2 and y=x+6
kogti [31]

Answer:

x=2

Step-by-step explanation:

y=3x+2

y=x+6

Since you're stating that, they both equal because equation is equated to equation 2 because of the Y.

Therefore, substitute into both equations as shown:

3x+2=x+6

3x-x=6-2  (bring 2 to the other side by subtracting 2 as well as x)

2x=4

2x/2=4/2  (dividing 2 on both sides to get rid off 2 in 2x)

x=2.

5 0
3 years ago
Plz help this is due today AND NO LINKS OR GROSS PICTURES OR I REPORT
Zina [86]

Answer:

I think its A

Step-by-step explanation:

3 0
3 years ago
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