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stealth61 [152]
3 years ago
10

SOMEONE HELP ASAP. MUCH NEEDED

Mathematics
1 answer:
natima [27]3 years ago
8 0

Answer:

1,005 feet

Step-by-step explanation:

From the diagram in the attachment \tan 60=\frac{1400}{a}

\implies a=\frac{1400}{\tan 60}

a=808.29

Also \tan 82=\frac{1400}{b}

b=\frac{1400}{\tan 82} =196.76

The distance between balloon A and B is a+b=808.29+196.76=1005.05 feet

When we round to the nearest feet we get: 1,005 feet

The second choice is correct.

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A research team at Cornell University conducted a study showing that approximately 10% of all businessmen who wear ties wear the
LenKa [72]

Answer:

a) The probability that at least 5 ties are too tight is P=0.0432.

b) The probability that at most 12 ties are too tight is P=1.

Step-by-step explanation:

In this problem, we could represent the proabilities of this events with the Binomial distirbution, with parameter p=0.1 and sample size n=20.

a) We can express the probability that at least 5 ties are too tight as:

P(x\geq5)=1-\sum\limits^4_{k=0} {\frac{n!}{k!(n-k)!} p^k(1-p)^{n-k}}\\\\P(x\geq5)=1-(0.1216+0.2702+0.2852+0.1901+0.0898)\\\\P(x\geq5)=1-0.9568=0.0432

The probability that at least 5 ties are too tight is P=0.0432.

a) We can express the probability that at most 12 ties are too tight as:

P(x\leq 12)=\sum\limits^{12}_{k=0} {\frac{n!}{k!(n-k)!} p^k(1-p)^{n-k}}\\\\P(x\leq 12)=0.1216+0.2702+0.2852+0.1901+0.0898+0.0319+0.0089+0.0020+0.0004+0.0001+0.0000+0.0000+0.0000\\\\P(x\leq 12)=1

The probability that at most 12 ties are too tight is P=1.

5 0
3 years ago
Can someone help please
xxTIMURxx [149]

Answer:

y=x-5

Step-by-step explanation:

the slope is one

So to find the y intersect you need to plug in the numbers given, like this:

-2=3 + b

subtract the three

-5=b

the y intercept is -5

y=x-5

4 0
3 years ago
Rosa went to play miniature golf on Monday, when it cost $3 to rent the club and ball, plus $6
denis-greek [22]

Answer:they each played five games and spent 33 dollars.

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Find the height of the cone. Round your answer to the nearest whole number.
amm1812

Answer:

3

Step-by-step explanation:

3.34in is ans and after rounding off we can get 3

3 0
3 years ago
A child throws a water balloon down out of a window . Substitute 0 for h into the equation h=-16t^2 - 10t+6 To determine how man
Igoryamba

Answer:

t = 3/8 seconds

Step-by-step explanation:

h=-16t^2 - 10t+6

h= 0 when it hits the ground

0=-16t^2 - 10t+6

factor out a -2

0= -2(8t^2 +5t -3)

divide by -2

0 = (8t^2 +5t -3)

factor

0=(8t-3) (t+1)

using the zero product property

8t-3 = 0    t+1 =0

8t = 3         t= -1

t = 3/8     t= -1

t cannot be negative  ( no negative time)

t = 3/8 seconds

4 0
3 years ago
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