The corect answer is 15.
This is a combination of 6 objects taken 4 at a time:
Answer:
I think its 187 years
Step-by-step explanation:
Hope this helps!!
Answer:
x = 400 when y = 100
Step-by-step explanation:
This is a question in relation to direct variation.
y ∝ 
y = k 
Given that, y = 45, x = 81. Then;
45 = k 
45 = 9k
k = 
k = 5
Thus the relationship among the variables is;
y = 5 
If y = 100, then;
100 = 5 
= 
= 20
x = 
x = 400
Therefore, x = 400 when y = 100.
Answer:
v=0
Step-by-step explanation:
Answer:
b=4, h=5
Step-by-step explanation:b(b+1) divided by 2 is 10, so b(b+1)=20 so b^2 + b =20 so b^2 +b -20=0 which equals (b+5)(b-4), giving us solutions -5 and 4. However, -5 is invalid bc it is negative, so base must be 4 making height 5