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svet-max [94.6K]
3 years ago
7

Jeanine Baker makes floral arrangements. She has 11 different cut flowers and plans to use 7 of them. How many different selecti

ons of the 7 flowers are​ possible?
Mathematics
1 answer:
Alex Ar [27]3 years ago
6 0

Answer:

<h2>330 different possible selections are there.</h2>

Step-by-step explanation:

There is a total of 11 cut flowers.

Jeanine Baker has to choose 7 flowers among the 11 flowers.

The formula for choosing r numbers from n numbers is defined by ^{n}C_{r} = \frac{n!}{r!\times(n - r)!}, n > r.

From 11 flowers 7 flowers can be chosen in ^{11} C {7} = \frac{11!}{7!\times4!} = \frac{8\times9\times10\times11}{2\times3\times4}. = 330 ways.

There are 330 possible ways to choose 7 flowers from 11 flowers.

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What number increased by 3,080 equals 5,082?
kodGreya [7K]
Let the required number be x, then
x + 3,080 = 5,082
x = 5,082 - 3,080
x = 2,002
8 0
3 years ago
The doubling period of a bacterial population is 15 minutes. At time t= 80 minutes, the bacterial population was 90000​
Papessa [141]

Answer:

here i finished!

hope it helps yw!

Step-by-step explanation:

The doubling period of a bacterial population is 15 minutes.

At time t = 90 minutes, the bacterial population was 50000.

Round your answers to at least 1 decimal place.

:

We can use the formula:

A = Ao*2^(t/d); where:

A = amt after t time

Ao = initial amt (t=0)

t = time period in question

d = doubling time of substance

In our problem

d = 15 min

t = 90 min

A = 50000

What was the initial population at time t = 0

Ao * 2^(90/15) = 50000

Ao * 2^6 = 50000

We know 2^6 = 64

64(Ao) = 50000

Ao = 50000/64

Ao = 781.25 is the initial population

:

Find the size of the bacterial population after 4 hours

Change 4 hr to 240 min

A = 781.25 * 2^(240/15

A = 781.25 * 2^16

A= 781.25 * 65536

A = 51,199,218.75 after 4 hrs

6 0
3 years ago
Quien quiere ser mi amigo por favor ?<br><br> Cuantos es 5+5
liubo4ka [24]
5+5= 10
por que 5 +5 es diez
7 0
3 years ago
Read 2 more answers
A rectangular garden is extended 4% on the long sides and 8% on the short sides. To the nearest hundredth of a percent, by what
liq [111]

Answer: 12.32%

Step-by-step explanation:

1. x is the original long side and y is the original short side.

2. The area of the original rectangle is xy.

3. The rectangle is extended 4% on the long sides and 8% on the short sides. therefore, the new long side is:

\frac{104}{100}x=\frac{26}{25}x

4. And the new short side is:

\frac{108}{100}y=\frac{27}{25}y

5. The new area is:

(\frac{26}{25}x)(\frac{27}{25}y)=\frac{702}{625}xy

6. The percentage of increase is calculated by substracting the new area and the original area:

\frac{702}{625}xy-xy=0.1232xy

7. The result is:

(0.1232)(100)=12.32%

3 0
3 years ago
The number of feet in an unknown
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There are 3feet in one yard.

Let B = number of feet

Let Y = number of yards

B = 3Y

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