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myrzilka [38]
3 years ago
11

A boat whose speed in 15km/hr in still water goes 30 km downstream and come back in a total of 4 hours 30 minutes.The speed of t

he stream(in km/hr) is
Mathematics
2 answers:
PilotLPTM [1.2K]3 years ago
6 0

Answer: total Distance = 60km

Time = 4.5hrs

Speed = 60/4.5

13⅓km/hr

Step-by-step explanation:

MissTica3 years ago
5 0
The answer is total distance =50
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Find the probability of at least three successes in six trials of a binomial experiment in which the probability of success is 5
Amanda [17]

Answer:

31.3%

Step-by-step explanation:

Start by doing the binomial expansion of (x+y)^6 where x represents success. This is  

(x^6y^0) + 6(x^5y^1) +15(x^4y^2) +20(x^3y^3) +15(x^2y^4) +6(x^1y^5) +(x^0y^6)  

We are interested in the x^3y^3 term which represents exactly 3 successes. Since the probability of success and failure are both .5 we should be able to figure this out just using the coefficients of the terms which is  

20/64 = .3125 which is 31.25% Rounding yo the nearest tenth gives us

8 0
3 years ago
At 9 AM Monday morning Thomas feels a beaker with water and places it in the corner of the classroom. At 1 PM Tuesday Thomas exa
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3 years ago
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What is 4/7 as a decimal
scoundrel [369]

Answer:

0.57142858 is the answer hope this helped



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3 years ago
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3/12 1/6 and 1/3 same denominator
iogann1982 [59]
Yes because if you turn 6 and three to 12 then you have 2/12 and 4/12!
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AEFG - ALMN. Find the ratio of AEFG to ALMN.<br><br> A)1:4<br> B)1:2<br> C)2.1<br> D)4:1
vovikov84 [41]

Answer:

C)2 : 1

Step-by-step explanation:

AEFG ≈ ALMN

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