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wolverine [178]
2 years ago
7

The number of birds this year in the city of L.A. has increased by 15%. Last year there were 405,000 birds. How many birds are t

here now? Explain your answer
Mathematics
1 answer:
Tasya [4]2 years ago
6 0
There is 75
But iam not sure
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Divide the difference between 1,200 and 700 by 5
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Yoonie is a personnel manager in a large corporation. Each month she must review 16 of the employees. From past experience, she
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Answer: i think it would be 20

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5 0
2 years ago
Someone help I think this is probability but I don’t know
pickupchik [31]

ANSWER

1. 3391680

2. 3876

EXPLANATION

1. We want to find the value of:

P^{12}_7

This is called "12 permutation 7"

Permutation function is defined as follows:

P^n_r\text{ = }\frac{n!}{(n-r)!}

Therefore, we have that:

\begin{gathered} P^{12}_7=\frac{12!}{(12\text{ - 7)}!}\text{ = }\frac{12!}{5!} \\ P^{12}_7=\frac{12\cdot11\cdot10\cdot9\cdot8\cdot7\cdot6\cdot5!}{5!} \\ P^{12}_7=\text{ 12 }\cdot11\cdot10\cdot9\cdot8\cdot7\cdot6 \\ P^{12}_7=3391680 \end{gathered}

2. We want to find:

C^{19}_{15}

This is called "19 combination 15"

Combination function is defined as:

C^n_r=\frac{n!}{(n-r)!\cdot r!_{}}

Therefore, we have that:

\begin{gathered} C^{19}_{15}\text{ = }\frac{19!}{(19-15)!\cdot15!}\text{ = }\frac{19!}{4!\cdot15!} \\ ^{}C^{19}_{15}=\frac{19\cdot18\cdot17\cdot16\cdot15!}{4\cdot3\cdot2\cdot1\cdot15!} \\ C^{19}_{15}=\frac{19\cdot18\cdot17\cdot16}{4\cdot3\cdot2\cdot1} \\ C^{19}_{15}=\text{ 3876} \end{gathered}

7 0
1 year ago
How do i do this??????
Anastasy [175]
The answer will be v= -18
3 0
3 years ago
I need help with 5 on the second part.
sweet [91]
The first 5 is in the tens place and the second 5 is in the ones place
7 0
3 years ago
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