+285 +285 I got my answer form here: https://web2.0calc.com/questions/my-friend-any-help-is-appreciated
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
+285 I got this answer from here: https://brainly.in/question/18756313
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
😎😎😎
+285 I got this answer from here: https://web2.0calc.com/questions/compute-the-sum-of-all-positive-integers-k-for-which
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
😎😎😎
+285 I got this answer from https://www.topperlearning.com/answer/the-interior-angles-of-a-polygon-are-in-apif-the-smallest-angle-is-120-degree-and-the-common-difference-is-5-degree-then-the-no-of-sides-in-the-polygo/tk5eo455 so check it out
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
😎😎😎
