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Dmitriy789 [7]
3 years ago
5

Find the area of Pentagon ABCDE in which BL perpendicular to AC, CM perpendicular to AD, EN perpendicular to AD such that AC = 8

cm, AD = 12 cm, BL = 4 cm, CM = 6 cm and EN =5cm.​
Mathematics
1 answer:
deff fn [24]3 years ago
6 0

Answer:

Area ABCDE = 82 cm²

Step-by-step explanation:

ABCDE = ΔEAD + ΔDAC + ΔCAB

ABCDE = (12×5)/2 + (12×6)/2 + (8×4)/2 = 30+36+16 = 82

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igor_vitrenko [27]

This is the product of the square of a binomial expression. Therefore, it will have two factors.

Square of a binomial: a² + 2ab + b² = (a+b)²

The process:

9x² + 24x + 16

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I hope this helps :)

4 0
3 years ago
Please procedure and solution <br><br>2 x |-6|-3 x |2|+|-14|=​
lora16 [44]

Applying the rule of modulus for given values, the expression will result to 20.

<h3>What is Modulus or Absolute Values</h3>

The modulus of a value for example |a|=a if a is greater than or equal to zero

and also

|a|=-a if a is less than zero

In the expression given; the modulus of -6 written as

|-6|=-(-6) this is because the value is less than zero

The modulus of 2 written as; |2|=2 this is because the value is greater than zero. and;

|The modulus of -14 written as; |-14|= -(-14) since the value is less than zero.

Hence, we can rewrite the expression as;

we deal with multiplication first following the rules of BODMAS

2×-(-6)-3×2+[-(-14)]

2×6-6+14

and thus adding values

12+14-6

and finally we subtract;

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2 years ago
Solve the system using elimination 4x-7y=3 <br> x-7y=-15
BigorU [14]
The answer is 6,3
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6 0
3 years ago
Read 2 more answers
Question 2 of 5
andriy [413]

Answer:

B

Step-by-step explanation:

5 0
3 years ago
3. A wall is 12 feet high. If its area is 132 sq ft, what is its
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B. 46 feet because 132/12=11 and 12+12+11+11=46

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