Ñoäi vaên ngheä cuûa tröôøng coù 10 nam vaø 5 nöõ. Hoûi coù bao nhieâu caùch choïn ra 5 ngöôøi ñeå tham gia bieåu dieãn vaên ngheä; bieát:
a) Nhaát thieát phaûi coù ít nhaát 1 nam vaø 1 nöõ.
b) Coù ñuùng 2 nam, 3 nöõ vaø moät baïn nam ñöôïc choïn laøm nhoùm tröôûng.
c) Coù ñuùng 3 nam, 2 nöõ vaø baïn Huøng ñöôïc choïn laøm nhoùm tröôûng.

Diana is painting statues she has 7/8 of a liter of paint each statue requires 1/20 of a liter of paint how many statues can she paint?

What is the y intercept of f(x)=(1/2)^x?

Asequence has its first term equal to 4, and each term of the sequence is obtained by adding 2 to the previous term. if f(n) represents the nth term of the sequence, which of the following recursive functions best defines this sequence? (1 point) f(1) = 2 and f(n) = f(n − 1) + 4; n > 1 f(1) = 4 and f(n) = f(n − 1) + 2n; n > 1 f(1) = 2 and f(n) = f(n − 1) + 4n; n > 1 f(1) = 4 and f(n) = f(n − 1) + 2; n > 1 i will award !