Let's solve your equation step-by-step'
X-2/5=7
Step 1: Simplify both sides of the equation.
x+-2/5=7
Step 2: Add 2/5 to both sides.
x+-2/5+2/5=7+2/5
x=37/5
Answer
x=37/5
3.12 can you help me with my last question please
Step-by-step explanation:
a. The first four terms are:
-4 (⅓)¹⁻¹ = -4
-4 (⅓)²⁻¹ = -4/3
-4 (⅓)³⁻¹ = -4/9
-4 (⅓)⁴⁻¹ = -4/27
b. This is a geometric series. Since the absolute value of the common ratio is less than 1 (|⅓| < 1), the series converges.
c. The series converges to the sum of:
S = a₁ / (1 − r)
S = -4 / (1 − ⅓)
S = -6
david's procedure is correct becsuse Keisha didnt put the correct value of sin theta in equation, she forgot to mention negative sign. though solution are same but in other case it could have gone wrong
