0.009 is 100 times more than 0.09 I think
Answer:

Step-by-step explanation:
So in this systems of equations, we know the prices of the items, so the coefficients will represent how many Mary is getting of that item. So you can represent amount of bread as the variable b and the amount of milk as the variable m. On the right will be the total amount spent, since multiplying the price by how much you buy should get you the price
So since at store A, she spends 44.20 and bread costs 2.20 and milk costs 3.60 you get

Since at store B, she spends 44.70 and bread costs 2.50 and milk costs 3.40 you get the equation:

Well because the line segment runs from the center of the circle to a point on the circumference, AB would represent the radius.
Answer:
Step-by-step explanation:
The usual equation used for the vertical component of ballistic motion is ...
h(t) = -16t² +v₀t +h₀
where v₀ is the initial upward velocity, and h₀ is the initial height. Units of distance are feet, and units of time are seconds.
Your problem statement gives ...
v₀ = 64 ft/s
h₀ = 8 ft
so the equation of height is ...
h(t) = -16t² +64t +8
__
For quadratic ax² +bx +c, the axis of symmetry is x=-b/(2a). Then the axis of symmetry of the height equation is ...
t = -64/(2(-16)) = 2
The object will reach its maximum height after 2 seconds.
The height at that time will be ...
h(2) = -16(2²) +64(2) +8 = 72
The maximum height will be 72 feet.
We can create an equation.
What percent is x
'of' indicates multiplication
'is' indicates an equal sign
So we have:
x * 42 = 28
42x = 28
Divide 42 to both sides:
x = 2/3
Multiply by 100 to convert to a percentage.
x = 66 2/3 %