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2 years ago

There are 9 people at a sleepover. Each

Mathematics

2 answers:

PtichkaEL [24]2 years ago

6 0

Answer:

Step-by-step explanation:

9 people want 2 so 9*2=18

8*2= 16 not enough

8*3=24 enough

You can't order parts of a pizza and if you get less there won't be enough so if you get three pizzas there will be enough for all 9 people.

Zolol [24]2 years ago

3 0

Answer: 3

9 people, each want 2

SO - 9 x 2 = 18

you have 8 slices in each pizza

2 pizzas = 16 (not enough)

3 pizzas = 24 (everyone get 2)

<u>So 3 pizzas</u>

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2 years ago

Read 2 more answers

A new car sells for $27,500. The value of the car decreases by 14% annually. You want to sell the car when it's worth about $400

NemiM [27]

Answer: 13 years.

Step-by-step explanation:

The price decreases by 14% anually

To find the decimal form, you have 14%/100% = 0.14

So, the year zero, the price is $27,500

After one year, the price is:

P = $27,500 - 0.14*$27500 = $27,500*(0.86)

After the second year, the price is:

P = $27,500*(0.86)^2

and so on, so we want to find x such that:

P = $27,500*(0.86)^x = $4000

0.86^x = $4000/$27,500

Now, using the natural logaritm rule:

a^x = b

x = ln(a)/ln(b)

x = ln($4000/$27,500)/ln(0.86) = 12.8

We can round it up to 13, so after 13 years the price of the car is about $4000

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3 years ago