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4 years ago

Kelli does the grocery shopping for her family of four. The net income for the

Mathematics

1 answer:

natima [27]4 years ago

3 0

Answer:

$585

Step-by-step explanation:

simply find 13% of 4500. 0.13 x 4500 is $585

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Give a combinatorial proof that if n is a positive integer, then

gregori [183]

The Empire is attacking a Rebel base that is stocked with $n$ X-wings and $n$ Y-wings. The Rebels need to build a fleet consisting of $n$ ships (with at least 1 X-wing), to be led by 1 pilot in an X-wing.

There are $\binom n1=n$ ways of picking the leader, and $\binom{2n-1}{n-1}$ ways of building the rest of the fleet, so there's a total of

$n\dbinom{2n-1}{n-1}$

ways of building such a fleet.

In the other direction, suppose we build a fleet comprising of $k$ X-wings and $n-k$ Y-wings. We have $\binom nk$ ways of picking X-wings and $\binom n{n-k}$ ways of picking Y-wings. Also from the $k$ X-wings we pick 1 to be the leader, which we can do in $\binom k1=k$ ways. So there are

$k\dbinom nk\dbinom n{n-k}$

ways of building such a fleet. But since

$\dbinom nk=\dbinom n{n-k}$ , we have

$k\dbinom nk^2$

ways of building the fleet with these specifications. Sum over all possible values of $k$ ,

$\displaystyle\sum_{k=1}^nk\binom nk^2$

4 0

4 years ago

Worldwide, 1 in 5 adults cannot read or write and of them are women.

timofeeve [1]

<span>Actually in this whole world the major ill-literates are definitely women from many decades for sure, The main reason being most of them women where made or treated to be like that by our society any where any place in this world ie, just for giving birth to kids and looking after them and also the house chores, which was or is one of the main reason 1 in 5 adults cannot read or write where most of them are women, but now in the modern technology generation its slowly changing and equality will surely come in the next future.</span>

4 0

4 years ago

Pls help with this problem

34kurt

Answer:

E = 4.5, F = -6.25, D = -3.25

Step-by-step explanation:

3 0

3 years ago

PLEASE HELP!!!

posledela

Answer:

18%

Step-by-step explanation:

males support to wilson =0.18

percentage will be=18%

6 0

3 years ago

Read 2 more answers

$2800 is invested at a rate of 3.4% compounded

Rashid [163]

Answer:

4182.197099

Step-by-step explanation:

here is the function 2800(1+0.034)^12 If you have any questions please comment them! Hope this helps! ;-)

3 0

2 years ago