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3 years ago

Cody rented a bike from John's Bikes. It

Mathematics

1 answer:

adelina 88 [10]3 years ago

4 0

It would be two hours. This is because 24-16=8 and 8 divided by 4 is 2. Hope this helps

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How many different three-digit numbers can be written using digits from the set 5, 6, 7, 8, 9 without any repeating digits?

suter [353]

Answer: 60 different numbers can be formed

Step-by-step explanation:

Note that we have 5 different digits, and we must select 3 of them. They should not be repeated

The order of selection is important in this case, because the number 532 is not the same as the number 235.

So we have a permutations problem, where we have a set of n elements and we want to choose r from them.

Then we define the permutacion as:

$nPr=\frac{n!}{(n-r)!}$

In this case note that n=5 because there are 5 elements in the set.

r = 3 because we combine the elements to form three-digit numbers

Then:

$5P2=\frac{5!}{(5-3)!}$

$5P2=\frac{5!}{2!}$

$5P2=\frac{5*4*3*2!}{2!}$

$5P2=5*4*3$

$5P2=60$

4 0

3 years ago

Olivia is making scarves. Each scarf will have 3 rectangle, and 2/3 of the rectangles will be purple. How many purple rectangles

Salsk061 [2.6K]

Answer:

she will use 4.

Step-by-step explanation:

kajsbsbsjajaja

6 0

3 years ago

This is confusing please help

stira [4]

Step-by-step explanation:

since we are using Pythagoras

c² = a² + b²

with c being the Hypotenuse (the baseline opposite of the 90° angle),

you want to get the expression

y² = 3² + 3²

so, you pick the ² and put it next to the y left of the "=" sign.

and to the right of the "=" sign you put 3, ², +, 3, ²

3 0

2 years ago

Dan is watching the birds in his backyard. Of the birds he watches, 9 of them, or 45%, are sparrows. How may birds are in his ba

andrezito [222]

Answer:

Step-by-step explanation:45 divided by 9 is 5

6 0

3 years ago

Read 2 more answers

What percent of 77 is 9

EleoNora [17]

Answer:

11.7%

Step-by-step explanation:

3 0

3 years ago