Answer:
Step-by-step explanation:
25x - 35 = 5*5*x - 5*7
= 5*( 5x - 7)
Answer: 1:1
Step-by-step explanation:
Let r be the radius and h be the height of a cylinder.
Formula: Curved surface area of cylinder = 
Now, if radius of a cylinder is doubled and its height is halved, then new radius will be R= 2r and new height will be 
Now, new surface area = 
Ratio of curved surface areas : 
Hence, the ratios of their surface areas = 1:1 .
Answer:

Step-by-step explanation:
We need to solve the quadratic equation
6 = x^2 -10x
Rearranging we get,
x^2-10x-6=0
Using quadratic formula to solve the quadratic equation

a= 1, b =-10 and c=6
Putting values in the quadratic formula

So, 
Answer:
the first one is 48 i will have to do more solving for it but when i do i will edit my answer
Step-by-step explanation:
In 1 hour the boat traveled :
27/2 = 13,5 miles
In 1/2 hour the boat will travel :
13,5 x 1/2 = 6,75 miles
Ok done. Thank to me:>