# hihihi

 Username hihihi Score 303 Membership Stats Questions 25 Answers 93

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hihihi  Jan 12, 2021
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hihihi  Jan 12, 2021
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hihihi  Jan 12, 2021
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hihihi  Jan 12, 2021
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hihihi  Jan 11, 2021
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hihihi  Jan 9, 2021
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hihihi  Jan 6, 2021
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hihihi  Jan 6, 2021
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hihihi  Jan 5, 2021
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hihihi  Jan 5, 2021
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Jan 27, 2021
#1
+1

For a)

you have 120 m of fencing. you divided that by the 4 sides you have to enclose. This gives you 30m. to find the area you multiply length x heights so 30m x 30m = 900 square meters.

120/4=30 30x30=900

for b)

you have the same amount of fencing but only 3 sides, so in this case you take 120/3= 40.

40 m x40 m=1600 square meters

-hihihi

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Jan 27, 2021
#2
+1

This answer is from CPhill:

At 3 mph....your friend covers  3 / 60   miles per minute

At 4 mph......you cover  4/ 60    miles per minute

So....every minute....you close    [  4 - 3 ]/ 60   =  1/ 60   miles  on your friend

And when she has been walking for 5 minutes......she will be  5 * [3  / 60 ]  = 15/60  = 1/4 of a mile ahead of you when you start

So......the number of minutes, m, it will take to catch your friend can be found by :

( 1/60) m  = 1/4      multiply both sides by 60

m =  60  / 4   =    15 minutes

Jan 14, 2021
#2
0

Answer:

144 cm²

Step-by-step explanation:

Let say Side of original Square

= 4A  cm

Hence Area = (4A)² = 16A²   cm²

Then

Square when folded  in half

Then Sides of rectangle

will be  4A   &  2A

Now again Folded

Sides can be  2A  & 2A    or  4A  & A

2A  & 2A  would be a Square ( its given that its not a square)

Hence Second Rectangle Sides are 4A & A

Perimeter = 2(4A + A) = 10A

10A = 30cm

=> A = 3 cm

Area  of the original square =   16A²  = 16 * 3² = 144 cm²

area of the original square = 144 cm²

-hihihi

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Jan 13, 2021
#1
0

1984 =  2^6 * 31

Just multiply 1984 x 31 =(1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 248, 496, 961, 992, 1922, 1984, 3844, 7688, 15376, 30752, 61504) >>Total = 21 divisors

31 =3 + 1 =4

=hihihi

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Jan 13, 2021
#2
0

Smallest angle=120degrees

Common difference=5

A P is 120, 125, 130,..

The sum of interior angles of a polygon= (n-2)180

Hence Sum of n terms of an A P = (n-2)180

n/2 {2.120+(n-1)5} = 180(n-2)

5n2 -125n +720 = 0

n2 -25n +144=0

n=9 or 16

Hence number of sides can be 9 or 16

-hihihi

😎😎😎

Jan 12, 2021