10 miles 45 miles
----------------- * --------------------- Cross Multiply
16 kilometres x kilometres
10 x = 720
x = about 72 kilometres
Sine rule
a/Sin(A) = b/Sin(B) = c/Sin(C)
b
C / |
a / _| A
B c
We know that a = 70 degrees and A = 25 foot
So 70/Sin(25) = Something
We also know we want C, and that c = 90 degrees
So 70/Sin(25) = 90/Sin(C)
Then you have to rearrange the equations. Start with Multiply all by Sin(C)
So [Sin(C)][70/Sin(25)] = 90
Then divide everything by 70/Sin(25)
So Sin(C) = 90/[70/Sin(25)]
Now you want to isolate C, so Sin-1 everthing
So C = Sin-1{90/[70/Sin(25)]}
So C = 32.91309534
To the nearest tenth, 32.9ft
Hope that helps :)
Answer:
420,000 J/Kg
Step-by-step explanation:
energy= temperature change* mass* specific heat capacity
energy= 20*5*4200
energy= 420,000
Answer:
Step-by-step explanation:
GIVEN: The length of each side of a square is 
inches more than the length of each side of a small square. The sum of the areas of the square is 
inches.
TO FIND: the lengths of the sides of the two squares.
SOLUTION:
let the length of side of small square be 
Area of small square 
As length of each side of bigger square is 
more than the smaller square
length of side of bigger square 
Area of bigger square 
Also
Sum of areas of both square 
as the length of side can never be negative
length of side of smaller square 
length of side of bigger square 
Hence the length of smaller and bigger square are 
and 
respectively.
