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Mice21 [21]
2 years ago
12

A point on the ground is 5m away from the foot of the vertical wall 7m high, calculate correct to the nearest degree angle of de

pression of the point from the top of the wall​
Mathematics
1 answer:
djyliett [7]2 years ago
6 0

The angle of the depression from the top of the wall​ is 54 degree.

According to the statement

We have to find that the angle of the depression.

So, For this purpose, we know that the

Angle of the depression is the angle formed by the line of sight and the horizontal plane for an object below the horizontal.

From the given information:

A point on the ground is 5m away from the foot of the vertical wall 7m high

We know that the

θ = angle of depression of the point from the top of the wall

Then

Tan θ  = perpendicular / Base

Then substitute the values then

Tan θ  = perpendicular / Base

here perpendicular is 7 and the base is 5cm

Then

Tan θ  = 7/ 5

Tan θ  = 1.4

Then

θ  = tan^-1 (1.4)

θ  = 54.4

After rounding off to the nearest degree then it becomes 54 degree.

So, The angle of the depression from the top of the wall​ is 54 degree.

Learn more about Angle of the depression here

brainly.com/question/15580615

#SPJ9

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A statistician chooses 27 randomly selected dates, and when examining the occupancy records of a particular motel for those date
Anni [7]

Answer:

Confidence interval variance [21.297 ; 64.493]

Confidence interval standard deviation;

4.615, 8.031

Step-by-step explanation:

Given :

Variance, s² = 34.34

Standard deviation, s = 5.86

Sample size, n = 27

Degree of freedom, df = 27 - 1 = 26

Using the relation for the confidence interval :

[s²(n - 1) / X²α/2, n-1] ; [s²(n - 1) / X²1-α/2, n-1]

From the chi distribition table :

X²α/2, n-1 = 41.923 ; X²1-α/2, n-1 = 13.844

Hence,

[34.34*26 / 41.923] ; [34.34*26 / 13.844]

[21.297 ; 64.493]

The 95% confidence interval for the population variance is :

21.297 < σ² < 64.493

Standard deviation is the square root of variance, hence,

The 95% confidence interval for the population standard deviation is :

4.615 < σ < 8.031

3 0
3 years ago
NEED HELP
blagie [28]

Answer:

Range: [-7, 8]

General Formulas and Concepts:

<u>Algebra I</u>

  • Reading a coordinate plane
  • Range is the set of y-values that are outputted by function f(x)
  • Interval Notation: [Brackets] denote inclusion, (Parenthesis) denote exclusion

Step-by-step explanation:

According to the graph, our y-values span from -7 to 8. Since both are closed dot, they are included in the range:

Range: [-7, 8]

3 0
3 years ago
Which describes the pilots distance in section 1?
Serjik [45]
Third option, decreasing
6 0
3 years ago
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Jack’s favorite sports drink comes in a 20-ounce bottle. the manufacturer of the sports drink requires a tolerance of 0.4 ounce.
Scrat [10]

Answer:

Answer:

Step-by-step explanation:

The manufacturer requires that the weight differs from 20 oz in at most 0.4 oz, therefore we can write this difference (which can be either above or below 20 oz, to be smaller than or equal to 0.4 oz.

The weight can be:

1) smaller than or equal to 20 oz + 0.4 oz:    then  

2) larger than or equal to 20 oz - 0.4 oz:    then  

and which combined, can be written as a double inequality;

This double condition can also be written using the absolute value symbol as:  

Step-by-step explanation:

4 0
3 years ago
Consider the set whose elements are the graphs having vertex set {1, 2, 3, 4}, and consider the relation on that set, where two
Damm [24]

Answer:

7

Step-by-step explanation:

Let S be the set of all graphs having vertex set  \{1,2,3,4\}. The relation \rho is defined over S such that

the graphs G and H are equivalent provided that they have same number of edges. Then, the number of equivalence classes depends on how many edges can be there in the vertex set \{1,2,3,4\} .

The number of edges is 0 forms a disconnected graph which makes an equivalent class.

The graphs of 1 edge makes an equivalent class.

The graphs of 2 edges makes an equivalent class.

The graphs of 3 edges makes an equivalent class.

The graphs of 4 edges makes an equivalent class.

The graphs of 5 edges makes an equivalent class.

In similar way, the only graph of 6 edges is complete graph which forms another equivalent class.

Hence,the total number of equivalent classes is 7.

8 0
3 years ago
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