Answer:
D
Step-by-step explanation:
using the definition of n =
where n! = n(n- 1)(n - 2)......× 3 × 2 × 1
here n = 7 and r = 4, hence
7
=
= ← cancel 3 × 2 × 1 leaving
7 = 7 × 6 × 5 × 4 = 840 → D
CORRECT ANSWER: 90
Explanation:
10 rows times 9 tulips in each row.
9*10= 90
Maria can plant 90 tulips.
Most numbers have two square roots and for 25 it would be 5 and -5 but negative numbers have no real square roots so -25 would have 0 real square roots
Answer:
90 but since its a triangle but im
pretty sure you have to divide by 2 so 45 i think