Answer:
y=-3(x-1)^2+5
Step-by-step explanation:
The vertex form of a parabola is y=a(x-h)^2+k where (h,k) is the vertex.
We are given the vertex (h,k) is (1,5) so that makes the equation we have
y=a(x-1)^2+5.
We still need to find a.
We do have the point (0,2) on our parabola.
So replace (x,y) with (0,2) and solve for a.
2=a(0-1)^2+5
2=a(-1)^2+5
2=a(1)+5
2=a+5
-3=a
So the equation is
y=-3(x-1)^2+5
Answer:
The graph in the attached figure
Step-by-step explanation:
Let
x ----> the number of days
y ----> the amount of money in her bank account
we know that
The equation of the line in slope intercept form is equal to
where
m is the slope or rate
b is the y-intercept or initial value
In this problem we have
The slope is equal to
----> is negative because is a decreasing function
----> initial amount in the account bank
substitute
see the attached figure to better understand the problem
Answer:
6.25 =x
Step-by-step explanation:
tan theta = opp/ adj
tan 38 = x/8
Multiply each side by 8
8 tan 38 = x/8 *8
8 tan 38 = x
6.250285012 =x
To 2 decimals
6.25 =x
If George needs to buy 2 flash drives and they are $28 each then he needs to spend a total of $56 on his purchase.
$28x2=$56
or
$28+$28=$56