Answer:
2/5+4/10
first find the LCM =10
Mytiply both numerator and denominator to have the denominator same value 2×2/5×2 + 4×1/10×1=
4/10 + 4/10 add numerator 8 / 10 both number divisible by 2 answer is 4/5
Answer: cos(x) = 0
Good luck !
Answer:
There are no errors
Step-by-step explanation:
The math is correct
Answer:
Equivalent expressions
A) 
C) 
Step-by-step explanation:
Given expression :

Choices given :
A) 
B) 
C) 
D) 
To find the equivalent expression.
We will first evaluate the given expression.

⇒
[Quotient of a negative dividend and a positive divisor is always negative]
Evaluating each choice to select the equivalents.
A) 
⇒
[Quotient of a positive dividend and a negative divisor is always negative]
B) 
⇒ 
⇒ 
C) 
⇒
[Product of a positive and a negative is always a negative]
⇒ 
D) 
⇒
[Product of two negatives is always a positive]
⇒ 
∴ We see that the choices A and C are equivalent.