Answer:
the median is 8 because it is the middle number there is no mode mean is 7
Add 2x to both sides,
3x+9=18
Subtract 9 from both sides. 3x=9
Divide both sides by 3.
x=3
For this case we have the following system of equations:
To solve, we follow the steps below:
We multiply the second equation by -4:
We add the equations:
Equal signs are added and the same sign is placed.
We look for the value of the variable "x":
Thus, the solution of the system is:
Answer:
Answer:
3
Step-by-step explanation:
4(a) The first 3 terms are:
₅C₀ (3)⁵ (bx)⁰ = 1 × 3⁵ × 1 = 243
₅C₁ (3)⁴ (bx)¹ = 5 × 3⁴ × bx = 405b x
₅C₂ (3)³ (bx)² = 10 × 3³ × (bx)² = 270b² x²
4(b) The coefficient of x² (the third term) is twice the coefficient of x (the second term).
270b² = 2 (405 b)
270b² = 810b
270b = 810
b = 3