I believe it is 70! Sorry if it is incorrect
Answer:
Statement 1 is correct.
Step-by-step explanation:
Inverse sign is only defined from -90° to 90° therefore statement 2 is false.
Answer:
1
/4 or 0.25
Step-by-step explanation:
Answer:

Step-by-step explanation:
replace x with -1
solve exponents
-1² = -1 × -1 = 1
subtract

Answer:
a) x = 10
b) x = -40
c) x = 10, -40
Step-by-step explanation:
a)

Taking 10 to the right hand side 10 becomes positive

So x = 10
b)

Taking 20 to the right hand side 20 becomes negative

Multiplying both sides by 2

So, x = -40
c)

Hence, x = 10, -40
So, two solutions can be provided