The law of reflection states that when a ray of light reflects off a surface, the
angle of incidence is equal to the angle of reflection.
Ramesh places
a mirror on level
ground to
determine the height of a pole (with traffic light fired on it). He stands at a
certain distance so that he can see the top of the pole reflected from the mirror.
Ramesh’s eye level is 1.5 m above the ground. The distance of Ramesh and the
pole from the mirror are 1.8 m and 6 m respectively.
On the basis of the above information, answer any four of the following
questions:

(i) Which criterion of similarity is applicable to similar triangles?
(a) SSA
(b) ASA
(c) SSS
(d) AA

(ii) What is the height of the pole?
(a) 6 metres
(b) 8 metres
(c) 5 metres
(d) 4 metres

(iii) If angle of incidence is i , which of the following is correct relation?
(a) tan i=5/6
(b) tan i= 6/5
(c) tan i= 3/5
(d) tan i= 5/3
(iv) Now Ramesh move behind such that distance between pole and Ramesh is
13 meters. He places mirror between him and pole to see the reflection of light
in right position. What is the distance between mirror and Ramesh ?
(a) 7 metres
(b) 3 metres
(c) 5 metres
(d) 4 metres

(v) What is the distance between mirror and pole?
(a) 9 metres
(b) 8 metres
(c) 12 metres
(d) 10 metres


please Give the answer Today is my exam​

9514 1404 393

Answer:

  x = 2/3, -1/4

Step-by-step explanation:

The zero product rule tells you a product will be zero only if one or more factors is zero. The solutions to this equation are the values of x that make one or the other of the factors be zero.

  3x -2 = 0

  3x = 2

  x = 2/3 . . . . makes the first factor zero

__

  4x +1 = 0

  4x = -1

  x = -1/4 . . . . makes the second factor zero

__

The solutions are ...

  x = 2/3  or  x = -1/4

Answer:

15

Step-by-step explanation:

To find the y-intercept, just set the x value to 0:

[tex]y=0^2+0x+15=15[/tex]

Answer:

Are you sure thats all you are given?

Answer:

She Has To Work For Around 23 Hours.

How I Found The Answer:

10 x 23 = 230 Dollars

230 + 25 = 255 Dollars

Answer:

-1

Step-by-step explanation:

mn = -3 because 3 × -1 = -3

p^2 = 4 because 2^2 = 4

Then 4 + -3 = -1

Answer:

I have attached a picture of me solving the equation. If you have any questions I am here to help. Hope this helps, thank you :) !!

Answer:

90 ounce in regular size

Step-by-step explanation:

The number of ounces of the detergent are in the regular size is 90 ounces.

Suppose the value of which a thing is expressed in percentage is "a'

Suppose the percent that considered thing is of "a" is b%

Then since percent shows per 100 (since cent means 100), thus we will first divide the whole part in 100 parts and then we multiply it with b so that we collect b items per 100 items(that is exactly what b per cent means).

We need to Write the percent as a fraction in simplest form

16.24%

So, we can rewrite it as;

16.24 / 100

16 and 24/100 or 16 6/25

So the percent as a fraction is 16 6/25

We are given that;

Percentage of detergent=60%

Number of ounces= 144

Now,

To find how many ounces of detergent are in the regular size, we need to use the information that the supersized has 60% more detergent than the regular size. This means that if we let x be the number of ounces in the regular size, then 144 is equal to x plus 60% of x. We can write this as an equation:

144 = x + 0.6x

To solve for x, we need to combine like terms and isolate x on one side of the equation:

144 = 1.6x x = 144/1.6 x = 90

Therefore, by the given percentage the answer will be 90 ounces.

Learn more about percent here:

https://brainly.com/question/11549320

#SPJ2

Answer:  Imagism is a school of poetry that advocates using everyday language to capture and present images in precise, brief poems that suggest, rather than enforce, interpretation

Answer:

the y intercept is -2

Step-by-step explanation:

the y intercept is always the value on the end

Answer slope-intercept form is y = mx+ b y = m x + b, where m m is the slope and b b is the y-intercept. y = mx +b y = m x + b Find the values of m m and b b using the form y = mx+b y = m x + b.

Step-by-step explanation:

Answer:

y=-4

Step-by-step explanation:

24y=-6

24y/24y=24y/-6

y=-4

Answer:

(2, -6)

Step-by-step explanation:

(2,-6) because that's the middle of you count.

Answer:

1+1 is 2

Hope it will help :)

Answer:

The second answer is correct

Answer:

−4+y

Step-by-step explanation:

3+(−7+y)

Subtract 7 from 3 to get −4.

−4+y

Answer:

OH OKK NICE TELLING ME

Step-by-step explanation:

Answer:

A) 8

Step-by-step explanation:

Answer:

no solution

Step-by-step explanation:

Given

- 2(v - 2) = - 3 - 2v ← distribute left side

- 2v + 4 = - 3 - 2v ( subtract 4 from both sides )

- 2v = - 7 - 2v ( add 2v to both sides )

0 = - 7 ← not possible

This indicates the equation has no solution

Answer:

2nd linear equation represents the graph

Step-by-step explanation:

Answer: C

Step-by-step explanation:

Answer:

[tex]\displaystyle m=\frac{-2}{3}[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Step-by-step explanation:

Step 1: Define

Find points from graph

Point (-3, 1)

Point (3, -3)

Step 2: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m

Answer:

-5,-4,-3,-2,1,0,1,2

Step-by-step explanation:

Domain are all the x values. I believe this is the answer, however the open bracket o is bit confusing, if this it not correct(still should be)try -5,and forever going. But yeah im like 99% sure im right

Given:

Consider the given statement is

[tex]\sqrt{\sec^2\theta+\text{cosec}^2\theta}=\tan \theta+\cot \theta[/tex]

To prove:

The given statement.

Solution:

We have,

[tex]\sqrt{\sec^2\theta+\text{cosec}^2\theta}=\tan \theta+\cot \theta[/tex]

Taking LHS, we get

[tex]LHS=\sqrt{\sec^2\theta+\text{cosec}^2\theta}[/tex]

[tex]LHS=\sqrt{\dfrac{1}{\cos^2\theta}+\dfrac{1}{\sin^2\theta}}[/tex]

[tex]LHS=\sqrt{\dfrac{\sin^2\theta+\cos^2\theta}{\sin^2\theta\cos^2\theta}}[/tex]

[tex]LHS=\sqrt{\dfrac{1}{\sin^2\theta\cos^2\theta}}[/tex]            [tex][\because \sin^2\theta+\cos^2\theta=1][/tex]

[tex]LHS=\dfrac{1}{\sin\theta\cos\theta}[/tex]

[tex]LHS=\dfrac{\sin^2\theta+\cos^2\theta}{\sin\theta\cos\theta}[/tex]            [tex][\because \sin^2\theta+\cos^2\theta=1][/tex]

[tex]LHS=\dfrac{\sin^2\theta}{\sin\theta\cos\theta}+\dfrac{\cos^2\theta}{\sin\theta\cos\theta}[/tex]

[tex]LHS=\dfrac{\sin\theta}{\cos\theta}+\dfrac{\cos\theta}{\sin\theta}[/tex]

[tex]LHS=\tan \theta+\cot \theta[/tex]

[tex]LHS=RHS[/tex]

Hence proved.

Step by step explanation:

Question 1:

Let's simplify step-by-step.

−3x2+6x+5x2−2

=−3x2+6x+5x2+−2

Combine Like Terms:

=−3x2+6x+5x2+−2

=(−3x2+5x2)+(6x)+(−2)

=2x2+6x+−2

Answer:

0.8

Step-by-step explanation:

5 ÷ 6.25 = 0.8

You can do this on a calculator.

Answer:

Lesser = -490

Greater x = 100x

Step-by-step explanation:

The zeros is basically the opposite numbers to make the equation equal to 0.

We have -10x^2(I believe it's a power)

and we have + 490

so,

-10x^2 = -100x

So the opposites to make those is:

+ 100x because, -100x + 100x = 0

and -490 because, 490 - 490 = 0.

Answer:

P(vowel) = [tex]\frac{1}{4}[/tex]

Choosing one letter at random is a simple event.​

Step-by-step explanation:

P(vowel) =  [tex]\frac{1}{4}[/tex]

This is because there are 2 vowels so the probability [tex]\frac{2}{8}[/tex] is  which can be simplified to [tex]\frac{1}{4}[/tex] .

Moreover, Choosing one letter at random is a simple event.

The definition of a simple event is one that can only happen in one way, or in other words, it has a single outcome.

Malik's probability of drawing one letter at random is 1/4.

Find out more about the probability here:

brainly.com/question/11234923

Answer:

B

Step-by-step explanation:

Answer:

b

Step-by-step explanation:

Answer:

A, C and D

Step-by-step explanation:

both A, C and D are both porportions because they both equal the other fraction.

Answer:

1, 3, 4

Step-by-step explanation:

i had this on my test- im doing it rn.

Answer:

20 x 0.65 = 13

20 + 13 = 33

20 x 65/100 = 13

Answer:

variety of coloured 'hoodies to sell. Each hoodie costs the stall holder $20 and she intends to sell them to the public at a mark up of 65% write the percentage mark up value as: 1) fraction in simplest form ... an acute angle lies in the range. 0 \leqslant \theta ... an angle that measures 65° i

Step-by-step explanation:

Answer:

2rs

Step-by-step explanation:

simplify- 2*7r^2s^2/7rs

r^2 divided by r^1=r^(2-1)=r^1=r

s^2 divided by s^1=s^(2-1)=s^1=s

canceling out 7 as it appears on both sides of the fraction line