1 7/10 and that is as simple as it gets because there is nothing multiplied to equal 7 or ten together. :)
Answer:
Step-by-step explanation:
∠IHG = ∠IHW + ∠WHG
36x + 2 = 16x - 3 + 65
36x + 2 = 16x + 62
Subtract 2 from both sides
36x = 16x + 62 - 2
36x = 16x + 60 {Subtract 16x from both sides}
36x - 16x = 60
20x = 60 {Divide both sides by 20}
x = 60/20
x = 3
Answer:
Step-by-step explanation:
Q=+5414x=5
Triangle DEF is scalene
Must click thanks and mark brainliest
Answer:
See below.
Step-by-step explanation:
I will assume that 3n is the last term.
First let n = k, then:
Sum ( k terms) = 7k^2 + 3k
Now, the sum of k+1 terms = 7k^2 + 3k + (k+1) th term
= 7k^2 + 3k + 14(k + 1) - 4
= 7k^2 + 17k + 10
Now 7(k + 1)^2 = 7k^2 +14 k + 7 so
7k^2 + 17k + 10
= 7(k + 1)^2 + 3k + 3
= 7(k + 1)^2 + 3(k + 1)
Which is the formula for the Sum of k terms with the k replaced by k + 1.
Therefore we can say if the sum formula is true for k terms then it is also true for (k + 1) terms.
But the formula is true for 1 term because 7(1)^2 + 3(1) = 10 .
So it must also be true for all subsequent( 2,3 etc) terms.
This completes the proof.
