Answer:
1. 4
2. 64
3. 16
4. 1
5. 2
6 12
Step-by-step explanation:
Answer:
y = - 8x + 12
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = (1, 4) and (x₂, y₂ ) = (10, - 68)
m = = = - 8, thus
y = - 8x + c ← is the partial equation
To find c substitute either of the 2 points into the partial equation
Using (1, 4), then
4 = - 8 + c ⇒ c = 4 + 8 = 12
y = - 8x + 12 ← equation of line
189 because 20.7 rounds to 21 and 9.18 rounds to 9
21 * 9 = 189
A given term in a PG =a₁rⁿ⁻¹
Let' calculate the 1st term a₁, knowing a term & the common factor/ratio
a₄ = 1/2 so 1/2 = a₁(1/2)³
1/2 = a₁/8 and a₁ = 4
Now calculate a₉ =a₁.r⁸
a₉ = 4.(1/2)⁸ and a₉ = 1/64