Answer:
-27
Step-by-step explanation:
I cant see the question 1 sorry:(
2. x=71(base angle, isos. triangle)
3. x=45 (same reason as the above)
4. the third one
Answer:
2(3x+1)(x+1)
Step-by-step explanation:
First, we factor out the common term, which is 2.
2(3x²+4x+1)
Then, we factor the polynomial inside the parenthesis.
2(3x+1)(x+1)
3, x, x+6 are the first 3 terms of G.P
common ratio is x/3=x+6/x
so we cross multiply x×x=3×x+6
ײ= 3x+18 so we have x²-3x-18
(x-6)(x+3)=0
the possible value of x are 6 and -3
b) tenth term of the seauence
first of all the possible sequence are 3, 6, 12 and 3, -3, 3
but we need only the positive GP
so the common ratio of.the GP r is 6/3=2
the 10th term of a GP sequence is ar^10-1=ar^9
where a = first time
3×2^9=3×512=1536
the 10th term is 1536
Answer:
1. The scale factor is 2.
Step-by-step explanation:
5 ÷ 2.5 = 2
3 ÷ 1.5 = 2
Answer:
2. The area of the scale drawing is 3.75 in^2.
Step-by-step explanation:
1.5 × 2.5 = 3.75
Answer:
3. The area of the actual drawing is 7.5 in^2.
Step-by-step explanation:
3.75 × 2 = 7.5
