Ask question

Ask question

All categories

2 years ago

6

A river has a current of 2km per hour. Find the rate of Fred’s boat in still water if it travels 30 km downstream and the same t

ime it takes to travel 14 km upstream.

1 answer:

ratelena [41]2 years ago

8 0

Answer:

32km

Step-by-step explanation:

You might be interested in

Prove that C(50,3) + C(50,4) = C(51,4)

valkas [14]

By definition of the binomial coefficient,

$C(n,k) = \dfrac{n!}{k!(n-k)!}$

so we have

$C(50,3) + C(50,4) = \dfrac{50!}{3!47!} + \dfrac{50!}{4!46!} \\\\ = \dfrac{50!}{3!46!} \left(\dfrac1{47} + \dfrac14\right) \\\\ = \dfrac{50!}{3!46!} \times \dfrac{51}{188} \\\\ = \dfrac{51!}{3!46!} \times \dfrac1{4\times47} \\\\ = \dfrac{51!}{4!47!} \\\\ = \dfrac{51!}{4!(51-4)!} = C(51,4)$

as required.

5 0

1 year ago

Please help me with this problem and if you can show your work

ella [17]

Answer:

2.9

just answering wrong because i need points sorry

7 0

2 years ago

A company orders 29 boxed lunches from a deli for $324.80. If each boxed lunch

UkoKoshka [18]

Answer:

Each boxed lunch costs $11.20

Step-by-step explanation:

29 boxed lunches = $324.80

divide by 29 on each one

1 boxed lunch = $11.20

3 0

2 years ago

Find the solution of y = 3x + 3 for x = –3.

mixas84 [53]

Answer:

<h2>(-3,-6)</h2>

Step-by-step explanation:

hope it help you

plz follow me

3 0

2 years ago

Read 2 more answers

Can some on give the answers I got to get it write

dolphi86 [110]

Learning to spell would be smart ...

8 0

2 years ago