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vichka [17]
3 years ago
13

The line a and the plane Pi have a common point O and the angle between the line and the plane is 60 degrees. If point A belongs

to the line a even though OA = 4 cm, Calculate the distance from point a to the plane Pi. Please help me. ​
Mathematics
1 answer:
Amiraneli [1.4K]3 years ago
4 0

Answer:

(0,0) and (1,4)

Step-by-step explanation:

you want to have the same slope as

y=4,which is 4.

so(4-0)/(1-0)=4/1=4

The others do not have the same slope.

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x^4 - x^2 - 42 = 0

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(x^2 - 7)(x^2+6) = 0

x^2 = 7 \quad \textrm{or} \quad x^2 = -6

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3 years ago
Seven pieces of rope have an average (arithmetic mean) length of 68 centimeters and a median length of 84 centimeters. If the le
Svet_ta [14]

Answer:

The maximum possible length, in centimeters, of the longest piece of rope is 134 cm

Step-by-step explanation:

Let the seven pieces be a,b,c,d,e,f,g

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Average = \frac{\text{Sum of all lengths}}{\text{No. of pieces}}

68= \frac{\text{Sum of all lengths}}{7}

68 \times 7 =\text{a+b+c+d+e+f+g}

476=\text{a+b+c+d+e+f+g} --A

We are given that the median length of a piece of rope is 84 centimeters.

We arrange the pieces in the ascending order

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So, d = 84 cm

the length of piece a,b,c will be less than 84 and the value of e,f,g must be greater than or equal to 84

Let us suppose the length of a,b,c be x

Let us suppose the length of e,f be 84

The length of the longest piece of rope is 14 centimeters more than 4 times the length of the shortest piece of rope

So, g = 4x+14

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