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$48 marked down by 20%

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48-20%=48*(1-0.2)=48*.8= 38.4
$38.40

Blueberries contain sugars like glucose. What is the source of carbon for the glucose in blueberries? A. Carbon atoms in fertilizer
B. Carbon dioxide gas in air
C. Carbon dissolved in water
D. Carbon molecules in the soil

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B. Carbon dioxide gas in air

88% of 56.25 is what number?

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Your answer is 88% of 56.25 is 49.5

Hope this helps.

My book said 88% of 56.25 is 49.5?

The value of Jennifer's stock portfolio (in dollars) is given by the function f(t) = -3t +72t + 5000, where t is the time in months since she opened the account. After how many months will her portfolio be at a maximum? What is the maximum value of the portfolio?

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Answer:

a) The portfolio will be at maximum after 12 months (1 year)

b) The maximum value of the portfolio is $5432

Step-by-step explanation:

The function that models Jennifer's stock portfolio (in dollars) is $f(t)=-3t^2+72t+5000$ , where t is the time in months since she opened the account.

We complete the square to obtain this function in vertex form:

Factor -3 from the first two terms

$f(t)=-3(t^2-24t)+5000$ .

Add the zero pairs -3(+144),-3(-144)

$f(t)=-3(t^2-24t+144)+5000+-3(-144)$ .

Factor the perfect square trinomial and simplify.

$f(t)=-3(t-12)^2+5432$ .

The vertex of this function is (h,k)=(12,5432)

a) The portfolio will be at maximum when t=12, the h-value of the vertex

b) The maximum value of the portfolio is the k-value of the vertex which is 5432

Paint is red : blue in a ratio of 2 : 4. If 5 litres of red is used how much blue is used

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so since the ratio of red paint to blue paint is 2:4 and you can simplify 2:4 into 1:2 and because 5 liters of paint is used you would have to multiply the 2 from the simplified ratio by 5 so you could get the answer 2*5 and that equals 10

A box of dried fruit has 60 calories in 5 servings. How many calories are there per serving?