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fgiga [73]
3 years ago
11

I need help please!!

Mathematics
2 answers:
mars1129 [50]3 years ago
8 0

To solve for the area, you cannot solve for just half, so you first have to solve the whole entire area. A = πr².

π5² = 78.5

So, 78.5 is the answer to the circle area.

But half the circle is dividing the whole area by half.

78.5/2=39.25

So 39.25m² is the answer.

Artyom0805 [142]3 years ago
7 0

Answer:

39.27

Step-by-step explanation:

Calculate whole area of circle - pi5^2 = 78.54

Divide answer by 2 as only half of the circle is shaded - 78.54/2 = 39.27

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tatiyna

Answer:

30 feet

Step-by-step explanation:

Interesting question.

  • 1 cubit = 18 inches
  • 20 cubits = x
  • 1/20 = 18/x       Cross multiply
  • x = 20 * 18
  • x = 360 inches.

The maximum height is 360 inches.

  • 1 foot = 12 inches
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  • 12x = 360 * 1
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The maximum height reached was 30 feet.


6 0
3 years ago
Read 2 more answers
Algebra tiles to prove that 4 + 8x and 4(2x+1)
Dafna1 [17]
Not sure what algebra tiles are

not sure how to absolutely prove
I can prove it works at least most of the time by subsitute ing number for x


remember that 0,1,2 have special properties and are not very good for subsituting so
try 4
4+8(4)=4(2(4)+1)
true or false?
4+8(4)=4(2(4)+1)
multipily
4+32=4(8+1)
36=4(9)
36=36
this is treu at least for the number 4
another way is to believe in the distributive property where
a(b+c)=ab+ac so then
4(2x+1)=4(2x)+4(1)=8x+4=4+8x


7 0
3 years ago
Read 2 more answers
Helpppp please <br> I’m being timeeeeedddd
monitta

Answer:

x = -9

Step-by-step explanation:

ANGLES IN A TRIANGLE ADD UP TO 180°

50° + 80° = 130°

180° - 130° = 50

x+59 = 50

x = -9

3 0
3 years ago
Work out the size of angle x <br> Next to 164 and 90
Zielflug [23.3K]

Answer:

x=106 degrees

Step-by-step explanation:

I'm going to assume that this is a circle since you didn't give it to me

So you want to add 164 and 90 together and subtract the sum by 360

360-(164+90)=106

So you want to use PEMDAS (order of operations) to solve this

  1. so do what's in the perenthesis first so 164+90=254
  2. Then you want to subtract 254 from 360 so 360-254=106

x=106 degrees

6 0
3 years ago
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