Answer:
1=-1/5 2=11/20 3=149/25
Step-by-step explanation:
I get it you have to put the number into your calculator then turn it into a fraction
hop this helps
-mercury
Answer:
4
Step-by-step explanation:
x-5=11-3x
+5 +5
x=16-3x
+3x +3x
4x=16
--- ----
4 4
//x= 4//
// have a great day //
Answer:
343 : 729
Step-by-step explanation:
A cube is made up of 6 square faces. If each face has a side length of a, we can find the surface area of that cube with the formula
, since we'll have 6 faces with area a². Let's call the edge length of the first cube a and the edge length of the second cube b. The ratio between their surface areas is then 6a² : 6b², or simply a² : b². If we compare this to our given ratio 49 : 81, we can see that a² = 49 and b² = 81, or, square rooting both equations, a = 7 and b = 9.
The volume of a cube with a side length a is a³, so the ratio between our cubes here must be a³ : b³. Using the values for a and b we just found, this ratio becomes 7³ : 9³, which we can simplify to 343 : 729.
Answer: 
Step-by-step explanation:
Two lines are said to be perpendicular if the product of their slope = -1
Given :

to find the slope , we will write it in the form : 
That is


which means that the slope = 
any line that is perpendicular to this line will have slope = -2
using the formula :
, we have




