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Vika [28.1K]
3 years ago
8

What is the relationship between the angle of depression of a person looking down from the top of a hill at their friend standin

g on the ground and the angle of elevation of the person on the ground looking up at that friend who is standing on top of the hill?
A. A choice cannot be more than 600 characters - truncated. The angle of elevation will be greater than the angle of depression because the person has to look up from the ground to see their friend at the top of a hill.
B. The angle of depression and the angle of elevation will be the same
C. The angle of depression will be greater than the angle of elevation because the hill is higher than the ground
D. The angle of depression and the angle of elevation will add up to 180 degrees
Mathematics
1 answer:
MissTica3 years ago
3 0

Answer:

\tt{B.} \to \\  \tt{ \: The \:  angle  \: of  \: depression  \: and \:  the  \:  }\\ \tt{angle \:  of \:  elevation \:  will  \: be  \: the \:  same}

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a train travels 288km at a uniform speed.if the speed has been 4km per hour more it would have taken one hour less for the same
Lostsunrise [7]

Given:

A train travels 288 km at a uniform speed.

If the speed has been 4 km per hour more it would have taken one hour less for the same journey.

To find:

The initial speed of the train.

Solution:

Let x km/h be the initial speed on the train.

New speed of train = (x+4) km/h

We know that,

Time=\dfrac{Distance}{Speed}

Time taken by the train initially to cover 288 km is \dfrac{288}{x} hours.

New time taken by the train to cover 288 km is \dfrac{288}{x+4} hours.

It is given that If the speed has been 4 km per hour more it would have taken one hour less for the same journey.

\dfrac{288}{x}-\dfrac{288}{x+4}=1

\dfrac{288(x+4)-288x}{x(x+4)}=1

288x+1152-288x=x^2+4x

1152=x^2+4x

0=x^2+4x-1152

Splitting the middle term, we get

x^2+36x-32x-1152=0

x(x+36)-32(x+36)=0

(x+36)(x-32)=0

x=-36,32

We know that the speed cannot be negative. So, the only possible value of x is 32.

Therefore, the speed of the train is 32 km/h.

3 0
2 years ago
You just bought a new laptop and paid an initial payment of $150.00. You will make 12 payments of $69.50. How much will the comp
Flauer [41]

Using proportions, it is found that the computer will cost $1,043.04.

<h3>What is a proportion?</h3>

A proportion is a fraction of total amount.

In this problem, the total amount is composed by:

  • An initial payment of $150.
  • 12 payments of $69.50.
  • 6% sales tax, which means that the price is increased by 6%, that is, the previous amount is multiplied by 1.06.

Hence, the cost is given by:

C = 1.06 x (150 + 12 x 69.50) = 1043.04.

The computer will cost $1,043.04.

You can learn more about proportions at brainly.com/question/24372153

3 0
2 years ago
Please help me with this! ​
kramer

Answer:

B

Step-by-step explanation:

hope it helps you

please follow me

3 0
3 years ago
100 POINTS Write an inequality of the form Ax + B ≤ C to represent the word problem using your answers for A, B, and C. Solve th
Yakvenalex [24]

Answer:

5x +3y>-15

5(0)+3(0)

0+0=   0 > -15

Step by step explanation

We have to create a scenario that leads to an inequality of the form ax + b > c.

<em> </em>

<em>Word problem: A family went to an park. Entry fee of the park for a family is $20 and the cost of a ride is $10 per person. The family spent more than $100 on that ride. </em>

The required inequality is

Subtract 20 from both sides.

Divide both sides by 10.

It means the number of rides must be greater than 8.

8 0
3 years ago
A restaurant has 18 tables and 54 chairs. The
luda_lava [24]

Answer:

The ratio is 1:3

Step-by-step explanation:

Let

x -----> the number of tables in the restaurant

y ----> the number of chairs in the restaurant

we know that

To find out the ratio of tables to chairs in the restaurant, divide the number of tables by the number of chairs

we have

x=18\ tables\\ y=54\ chairs

so

The ratio is equal to

\frac{18}{54}

Simplify

Divide by 18 both numerator and denominator

\frac{1}{3}

therefore

The ratio is 1:3

6 0
3 years ago
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