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steposvetlana [31]

3 years ago

5

Brenda wants to buy one of the three cereals listed below. Which box of cereal is the Best Buy? Show and explain how you determi

ned this.
1) 16 ounces of Frosted Flurries for $3.50

2) 12.2 ounces of Chocolate O's for $2.42

3) 11.5 ounces of Cinnamon Grahams for $2.35

1 answer:

musickatia [10]3 years ago

5 0

Choaclate os are the cheapest

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The answer is number 4 "You have $60 to spend on hats at the mall, but you need to save at least $7 for lunch. You plan to spend the rest on hats that cost $15 each including tax"
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3 years ago

The height, h, in feet of a ball above the ground is given by h = −16t2 + 64t + 80, where t is the time in seconds. How long doe

Gwar [14]

Answer:

t = 5 seconds

Step-by-step explanation:

It is given that, the height h, in feet of a ball above the ground is given by :

$h=-16t^2+64t+80$

Where t is in seconds

We need to find how long does it take the ball to hit the ground? When it hits the ground, its height will be equal to 0. So,

$-16t^2+64t+80=0\\\\t=\dfrac{-64\pm \sqrt{(64)^2-4\times (-16)(80)} }{2\times -16}\\\\t=\dfrac{-64+ \sqrt{(64)^2-4\times (-16)(80)} }{2\times -16},\dfrac{-64-\sqrt{(64)^2-4\times (-16)(80)} }{2\times -16}\\\\t=-1\ s\ \text{and}\ t=5\ s$

Neglecting negative time.

It means ball will take 5 seconds to hit the ground.

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3 years ago

Find the mean of the data set: 8, 6, 4.

White raven [17]

Mean = Sum / number

Mean = (8 + 6 +4) / 3

= 18 / 3

= 6

Mean = 6

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