Answer:
$90
Step-by-step explanation:
$45 is half of $90
or
$45 is 50% of $90
Answer:
Step-by-step explanation:
f(x) = -2(x − 4^)2+ 2
The vertex is (4,2)
so the axis of symmetry is is x=4
g(x) = 5x^2− 10x + 7
h= -b/2a = 10/2(5) = 10/10 =1
The axis of symmetry is at x=1
h(x) the axis of symmetry is at x=-2
Answer:
4.5 g 56.25 g Since the only type of measurement mentioned in this question is weight or mass, I'll assume that the percentage concentration is % m/m (mass/mass). For that type of concentration measurement, simply multiple the percentage by the total mass to get the mass of the desired substance. So 150 g * 3% = 150 g * 0.03 = 4.5g For the amount of 8% solution with the same amount of dry substance, there's 2 ways of calculating the mass of solution. First, use the ratio of percentages, multiplied by the mass of the original solution to get the desired amount of new solution: 3/8 * 150 g = 56.35 g Or calculate it from scratch, like 4.5/X = 8/100 450/X = 8 450 = 8X 56.25 = X In both cases, the result is that you desire 56.25 grams of 8% solution.
