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Firlakuza [10]
3 years ago
13

Work Out the Area of ABCDE. Hard for me Help

Mathematics
1 answer:
Liula [17]3 years ago
7 0
1. find the area of the rectangle
2. find the area of the triangle 
3. add the areas for the total area

1. area of a rectangle = lw = 8x4 = 32cm
2. area of triangle = 1/2bh
    the height is the line drawn from the vertex A to the center of side BE
    the base is 1/2 the length of side BE therefore  base = 4
    because the hypotenuse is 5 and the height is 4 the laws of the pythagorean   theorem state that the base equals 3 (3-4-5 right triangle) 
   Therefore the area = 1/2(3)(4)= 1/2(12) =6cm
3. The total area equals 32cm + 6cm =38cm
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kodGreya [7K]

The answer is 100 degree

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3 years ago
Question Down below.
expeople1 [14]

Answer:

there equal

Step-by-step explanation:

the absolute value of 3 is 3

and the absolute value of -3 is 3

hope this helps

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sattari [20]
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6 0
3 years ago
2500 + 20%=what's the answer
zysi [14]

Answer:

  as written: 2500.2

  as intended: 3000

Step-by-step explanation:

20% = 0.2, so adding 0.2 to 2500 gives 2500.2

_____

We suspect you want to add 20% of 2500 to 2500. That is ...

  2500 + 20%×2500

  = 2500 + 0.20×2500

  = 2500 + 500

  = 3000

_____

<em>Comment on percentages</em>

A percentage is a pure number. It is a ratio of like quantities, so has no units.* A <em>useful</em> percentage always has a base. That is, it is a percentage <em>of something</em>. Sometimes that base may be unclear or unstated, in which case the percentage might very well be considered to be meaningless.

In any event, a percentage is simply a (unitless) fraction. The "%" symbol means the same thing as "/100", so 20% means 20/100 = 2/10 = 1/5.

The very clear math expression 2500 +20% means simply 2500 + 1/5, which is the mixed number 2500 1/5 or the decimal value 2500.2. Usually, when we want to add a percentage to some value, we want the percentage to be <em>of the original value</em>. When that is written as a math expression, it must show this:

  2500 + 20% of 2500

  2500 + 20%×2500

  2500(1 +20%)

_____

* The concentration or potency of some medicines or other mixtures may be expressed as a percentage that is the ratio of one unit to a different unit, typically weight per volume. That is, a "0.1%" preparation may be 0.1 grams per 100 mL, for example. You have to read the label to determine whether this is the case. Mathematically, this is not a percentage, but is a non-standard use of the "%" symbol to indicate a ratio to 100 of something.

4 0
3 years ago
3 friends' meals at a resuraunt cost $13 $14 and $11. Use perentheses to write two diffrent expressions to show how much they sp
klemol [59]

Answer:

38

Step-by-step explanation:

(11+13)+14

11+13=24

24+14=38

8 0
3 years ago
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