Answer: 2.66 hours
Step-by-step explanation:
Shawana can paint a fence in 8hours which means in one hour she can paint 1/8 of a fence.
Kevin can paint the same fence in 4 hours, so in one hour he can paint 1/4 of the fence.
Together in 1 hour they can paint 1/8 + 1/4 = 3/8
Total hours for painting is 3/8 or 2.66 hours
Answer:
10
Step-by-step explanation:
You do 5C3, which is 5!/((5-3)!3!) -->
5*4*3*2*1/(2*1*3*2*1) =
10
a. 4 – commutative property
b. 5 – commutative property
c. 0 – identity property
d. 4 – associative property
_____
The commutative property lets you swap the order: (a) + (b) = (b) + (a).
The associative property lets you change the grouping: (a+b)+c = a+(b+c).
The identity property lets you add 0 without changing anything: (a) +0 = (a).
Answer:
The function that best models the given data is;
B. h(t) = -6.73·t² + 14.19·t + 0.83
Step-by-step explanation:
The data in the given table is presented as follows

Where;
Time, t(s) is the independent variable
Height, h(m) is the dependent variable
Therefore, we have;
When t = 0, h = 1.0
From the given functions, we have the following table of the result of the function generated with Microsoft Excel

By comparison, the function that nest models the given data is the function 'B', given as follows;
h(t) = -6.73·t² + 14.19·t + 0.83.