Question

choose the right answers ​

Answer 1

Answer:

1-b

2-c

3-d

4-c

5-a

6-a

Step-by-step explanation:

hope my answer helpful

Answer 2

Answer:

Question :

Choose the right answers :

Answer :

$1) \: a) \: n(n + 1) \\ 2) \: d) \: \frac{a1}{a2} = \frac{b1}{b2} not \: equal \: to \: \frac{c1}{c2} \\ \\ 3) \: c) \: not \: real \: roots \\ \\ 4) \: d)45 \\ \\ 5) a) \: frustum \: of \: cone \: \\ \\ 6) \: d) \: \pi {r}^{2} h \\ \\ 7) \: a) \: (4.6) \\ \\ 8) \: b) \: \frac{ - 1}{2} and \: - 2$

Thank you !