Answer:
d = 10.5, a₁ = - 3.5
Step-by-step explanation:
The n th term of an AP is
= a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Given a₂ = 7 and a₄ = 28 , then
a₁ + d = 7 → (1)
a₁ + 3d = 28 → (2)
Subtract (1) from (2) term by term to eliminate a₁
2d = 21 ( divide both sides by 2 )
d = 10.5 ← common difference
Substitute d = 10.5 into (1)
a₁ + 10.5 = 7 ( subtract 10.5 from both sides )
a₁ = - 3.5 ← first term
-20=-4x-6x
First combine like terms.
-20=-10x
Divide by -10 on both sides
X=2
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➷ slope = (y2 - y1)/(x2 - x1)
Substitute in the values
slope = (3-8)/(-6-9)
Solve:
slope = 1/3
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Answer:
1
Step-by-step explanation:
A triangle can only have one right angle.
Download Math-way it gives answer for those Type of questions hope this helps
