2 years ago

Help pls and ty :D !!

Mathematics

1 answer:

xxMikexx [17]2 years ago

4 0

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3 years ago

A surveyor wants to know the length of a tunnel built through a mountain. According to his equipment, he is

MrMuchimi

Answer:

Length of the tunnel is 51.7 meters

Step-by-step explanation:

We are given that,

The surveyor is located 54 meters from one entrance at an angle of 56°.

The surveyor is located 31 meters from one entrance at an angle of 13°.

Let the length of the tunnel = x meters

So, using the law of cosines, we get,

$x^2=54^2+31^2-2\times 54\times 31\times \cos 69$

i.e. $x^2=2916+961-3348\times 0.3584$

i.e. $x^2=3877-1199.9$

i.e. $x^2=2677.1$

i.e. x = 51.7 meters

Hence, the length of the tunnel is 51.7 meters

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3 years ago

If y=7.2 and r= 1.1 have been rounded to 1 decimal place find the possible value of y x r

Shkiper50 [21]

Answer:

$the \: possible \: value \: of \: ( y \times r) = 7 \times 1 = \boxed{ 7} \\ or \\ ( 7.2 \times 1.1) = \boxed{ 7.9} \\$

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3 years ago

What is the approximate ratio of the difference in means to the MADs of the data sets? 4 6 7 31

Elza [17]

Answer: The answer is 6

Step-by-step explanation:

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I don't understand this question: 798 ,054 = 700,0000 +--------+------+50+4

ikadub [295]

Answer:

700,000+90,000+8000+50+4

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3 years ago

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Help pls and ty :D !!​

Help pls and ty :D !!