The rate of change between 1990 and 1999 is 15.22
Step-by-step explanation:
The rate of change in this case is given by change in quantity divided by change in time
So,
Hence,
The rate of change between 1990 and 1999 is 15.22
Keywords: Rate of change, median
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Suppose x is the total cost for the first purchase, cost of the bread = b and cost of the milk = m
Then:-
y = 5b + 2m
y - 4.2 = 2b + 5m
Subtract:-
4.2 = 3b - 3m
b - m = 4.2 / 3 = 1.4
That is bread costs $1.40 more than the milk. (Answer). Its A
Step-by-step explanation:
use the negative number -$65 to represent the change in the value of Leon's card
use absolute value to say that his balance will be $65 less
Answer:
The second base of the trapezoid b2 is 2.5 inches
Step-by-step explanation:
Here, we want to calculate the second base of the trapezoid.
Mathematically, the area of a trapezoid can be given as;
A = 1/2(a + b) h
where a and b represents the parallel bases and h is the height of the trapezoid
so this, we have from the question
1/2(4.5 + b2) * 6 = 21
3(4.5 + b2) = 21
divide both sides by 3
4.5 + b2 = 7
b2 = 7-4.5
b2 = 2.5 inches
We can re-write the equation √(1-x) - 2y = 2 → - 2y = 2 - √(1-x)
→ 2y = - 2 + √(1-x) → and y = [ - 2 + √(1+x)]/2
Tis function "exists" as long as the radical is > or = to zero:
1+x > or = 0 → x>-1
{x ∈ R for x> =0}
