Answer:
10 times greater
Step-by-step explanation:
Answer:
x = 57.2
Step-by-step explanation:
Equation:
32.8 + x = 90
x = 90 - 32.8
x = 57.2
We are simplifying this so they are easier to add in your head.
87+33 is easier math to do in your head
so our new estimated number would be 120
Answer:
A, D
Step-by-step explanation:
(1)
Assume that tan x = y. Replace this into the equation (1), we have:
+) 
=> 2y = 
=> 
=> 
=> 
=> 
=> 
=>
or 
If
=> y = - √3
=> tan x = - √3
=> x =
+ n.
with n is an integral
If 
=> y = 1/√3
=> tan x = 1/√3
=> x =
n is an integral
So that A, D are answers.