Hello,
Height: y
Number of branches: B=y-3
Number of leaves on one branche:n=10B²-B
Number of leaves on the tree:
nb=n*B=(10B²-B)*B=10B^3-B²
=10(y-3)^3-(y-3)²=(y-3)²[10(y-3)-1]=(y-3)²(10y-31)
a) if y=9 then nb=(9-3)²*(10*9-31)=36*59=2124.
. you multiply all of the values in the parentesys.
NNANANDNXJJWJSnJnmakakakajwjjsjsjajs
Answer:
Yes, Yes, No, Yes.
Step-by-step explanation:
2/5 as a decimal = 0.4
4 ÷ 0.4 = 10
1 is correct.
2 x 10 = 20
2 is correct.
6 x 10 = 60
3 is incorrect.
10 ÷ 2 = 5
4 is correct.
