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sasho [114]
3 years ago
6

Look at this triangleB11 cm4 cmA4CWork out length AC.pythagoras​

Mathematics
1 answer:
german3 years ago
6 0

Answer:

11.7 cm

Step-by-step explanation:

Using Pythagoras Theorem

AC² = AB² + BC²

AB = 4 cm

BC = 11 cm

AC² = 4² + 11²

AC = √4² + 11²

AC =✓137

AC = 11.704699911 cm

Approximately = 11.7 cm

Length AC = 11.7cm

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A rectangular patio is 20 meters by 30 meters and is surrounded by a sidewalk 2 meters wide.How many square meters are in the ar
Firdavs [7]

Answer:

216 meters squared

Step-by-step explanation:

the sidewalk extends 2 m in all directions around which makes a 34 x 24 rectangle.  The area of that rectangle is 816 sq. m and the area of the patio is 600 sq. m.  Subtract the patio area from the entire area to get the difference of 216 sq. m for just the sidewalk.

6 0
3 years ago
A large office desk has an area of 36 ft.² if the width is 4.5 feet write an equation to represent the area
gregori [183]

Answer:

4.5x=36ft²

Step-by-step explanation:

hope that helps

7 0
3 years ago
What is 5r^(2)-14r+ 8 = <br> in general trinomial
eimsori [14]

Answer:

STEP

1

:

Equation at the end of step 1

(5r2 - 14r) + 8

Step-2 : Find two factors of 40 whose sum equals the coefficient of the middle term, which is -14 .

-40 + -1 = -41

-20 + -2 = -22

-10 + -4 = -14 That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -10 and -4

5r2 - 10r - 4r - 8

Step-4 : Add up the first 2 terms, pulling out like factors :

5r • (r-2)

Add up the last 2 terms, pulling out common factors :

4 • (r-2)

Step-5 : Add up the four terms of step 4 :

(5r-4) • (r-2)

Which is the desired factorization

Final result :

(r - 2) • (5r -4)

8 0
3 years ago
Read 2 more answers
I will give brainliest to whoever helps me with this question. Also, if you could please explain to me how you solved it I would
lesya [120]

Answer:

20x3.14=62.8 62.8x10=628 Volume=628inches

Step-by-step explanation:

Plz give me brainlist

6 0
3 years ago
Read 2 more answers
PLS HELP.....
Gemiola [76]
The second one because Idk I’m just guessing lol it doesn’t look like it should be there though
3 0
3 years ago
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