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Correct question :-

A girl of height 90 CM is walking away from the base of a lamp post at a speed of 1.2 metre if the length is 3.6 metre above the ground find the length of her shadow after 4 seconds.

Solution :-

According to the GIVEN information draw a rough figure

[ Refer to attachment ]

Height of the lamp pole BC = 3.6 m

Height of the girl DE = 90 cm = 0.9 m [ Because 1 cm = 1/100 m ]

Speed of the girl = 1.2 m/s

Time taken to walk = 4 seconds

We know that

Speed = Distance / Time

⇒ Distance = Speed * Time

So, Distance walked by the girl from the lamp pole = 1.2 * 4 = 4.8 m = EB

Length of the shadow of the girl = AE

Consider ΔDEA and ΔCAB

DE ⊥ AB, CB ⊥ AB [ HEIGHTS are considered to be perpendicular to the ground ]

⇒ ∠DEA = ∠CBE = 90°

∠A is common

Third angles are also equal

Therefore by AAA similarity ΔDEA ~ ΔCAB

If 2 TRIANGLES are similar corresponding sides are in proportion

⇒ AE/AB = DE/CB

⇒ AE/(AE + EB) = DE/CB

⇒ AE/(AE + 4.8) = 0.9/3.6

⇒ AE/(AE + 4.8) = 9/36

⇒ AE/(AE + 4.8) = 1/4

⇒ 4AE = AE + 4.8

⇒ 4AE - AE = 4.8

⇒ 3AE = 4.8

⇒ AE = 1.6

Hence the length of the shadow of girl is 1.6 m.

Answer:

34600

Hope it HELPS you

Step-by-step EXPLANATION:

breadth be x

then the LENGTH = 8

area is 40 m

breadth = 40/8 = 5 metres ANS

Answer:

2 square

Step-by-step EXPLANATION:

ANSWER:

answer is 510 DIVIDE 8670 by 17

ANSWER:

I can't UNDERSTAND UR QUESTION

Answer:

1

Step-by-step EXPLANATION:

(m+N)² = m² + n² + 2mn

5² = m² + n² + 2 × 6

25 - 12 = m² + n²

m² + n² = 13

(m - n)² = m² + n² - 2mn

= 13 - 2 × 6

= 1

(m -n)² = 1

so m - n = root 1 ie 1

Answer:

Step-by-step explanation:

METHOD:

For finding the cube of a two-digit NUMBER with the tens digit = a  

and the units digit = b, we make four columns, headed by  

a³, (3a² × b), (3a × b²) and b³  

The rest of the PROCEDURE is the same as followed in squaring a number by the column method. We simplify the working as;  

a² × a = a³;  

a² × 3b = 3a²b;  

b² × 3a = 3ab²;  

b² × b = b³;

Examples on the method for finding the cube of a two-digit number:

1. Find the VALUE of (29)³ by the short-cut method.

SOLUTION:  

Method for Finding the Cube of a Two-Digit Number

Here, a = 2 and b =9.

a² × a = a³;

a² × 3b = 3a² × b;

b² × 3a = 3a × b²;

b² × b = b³  

Therefore, (29)³ = 24389  

2. Find the value of (71)³ by the short-cut method.  

Solution:

Method for Finding the Cube of a Two-Digit Number

Here, a = 7 and b = 1

a² × a = a³;  

a² × 3b = 3a² × b;  

b² × 3a = 3a × b²;  

b² × b = b³

Therefore, (71)³ = 357911  

By following the above examples on the method for finding the cube of a two-digit number; we can try to find the value of each of the following using the short-cut method;

1. (25)³  

2. (47)³

3. (68)³

4. (84)³

Step-by-step EXPLANATION:

PLEASE GIVE FIGURE for ANSWER

Answer: Three dimensions of SPACE  are called x, y, and z.

Step-by-step explanation:  In space, a POSITION is specified by three NUMBERS, KNOWN as dimensions. In the CARTESIAN coordinate system, these are called x, y, and z. A position in space time is called an event

WHT is this QUE. is not CLEAR

Answer:

73°,73°

Step-by-step explanation:

LET the two equal angles be x

Sum of all ANGLE s in a quadrilateral is 360°

76 + 138 + x + x = 360°

214 + 2X = 360°

2x = 146°

x = 73°

Therefore the two angles are 73°,73°

HOPE THIS HELPS YOU......

Answer:

YES because one angle is 45, other one is 90 so the rhird one will be 45.

as two ANGLES are same so it is isosceles triangle

ANSWER:

REFER IN ATTACHMENT

MARK AS BRAINLIST ANSWER

ANSWER:

yes,362÷2= 181

this is U R answer MATE.

ANSWER :

Given:

AB and AC are two chords of a circle with center O. Such that AB=2AC

p and q are ⊥ distances of AB and AC from center O i.e., OM=p and ON=q

r is the radius of the circle

To prove that:

4Q

2

=p

2

+3r

2

Proof:

Join OA.

OM and ON are ⊥ distances of AB and AC from center O.

Here,

AN=

2

AC

(perpendicular from center to chord intersect at mid-point of the chord)

AM=

2

AB

(perpendicular from center to chord intersect at mid-point of the chord)

In right angled ΔOMA,

OM

2

+AM

2

=OA

2

p

2

+AM

2

=r

2

AM

2

=r

2

−p

2

…… (1)

In right angled ΔONA,

ON

2

+AN

2

=OA

2

q

2

+AN

2

=r

2

AN

2

=r

2

−q

2

…… (2)

Since,

AM=

2

AB

=

2

2AC

=AC=2AN

From equations (1) and (2), we have

r

2

−p

2

=AM

2

r

2

−p

2

=4AN

2

r

2

−p

2

=4[r

2

−q

2

]

4q

2

=p

2

+3r

2

LHS=RHS

ANSWER:

HOPE it will be HELP you

ANSWER:

SOLVE using:

Slope = y2 - y1/ x2-x1

for line AB and then

prove that both the LINES have EQUAL slopes.

ANSWER:

we all no UNDERSTAND your language...

Step-by-step explanation:

PLEASE write in hindi...........

Step-by-step explanation:

PARITY of 362

362 is an EVEN number, because it is evenly divisible by 2: 362 / 2 = 181.

QUARTILE deviation is the HALF of the inter quartile deviation.

Inter quartile deviation is the DIFFERENCE between UPPER quartile and lower quartile.

Given that, lower quartile is 0.25 and upper quartile is 63

Therefore, Quartile deivation IS9

ANSWER:

X = 2

Step-by-step explanation:

5x - 2x = -2 + 8

3x = 6

x = 2

HOPE THIS HELPS YOU......

ANSWER:

(-8/9) to the POWER -1 is (-9/8)

ANSWER:

I don't knowok o K o k o k o k o k

Answer:

11

Step-by-step EXPLANATION:

i THINK it SOO be the CORRECT

ANSWER:

what to do with these NUMBERS and WORDS

Answer:

X1 +x2 /2. HOPE it will HELP you MARK this answer as a brainliast

ANSWER:

REFER IN ATTACHMENT

MARK AS BRAINLIST ANSWER

ANSWER:

I don't KNOW

Step-by-step EXPLANATION:

yfghghjhv

ANSWER:

PLEASE POST the COMPLETE QUESTION...

❤

Step-by-step explanation:

Received from a friend...Worth Reading...

I boarded flight from Bangalore to Mumbai, economy class. I put my hand bag in overhead bin and took my aisle seat. There was an old person sitting next to me on the window seat.

I had a presentation in Mumbai, so took my documents and started going through them for the final time before the presentation. After 15–20 minutes I was done with my documents, so I put them away and started looking out of the window, and suddenly I looked at the face of this person sitting next to me. I thought I have seen him somewhere.

He was old, his face, the suit was not very expensive, and he was replying to some mails or going through some documents. I exactly don’t KNOW. I noticed his shoes, they were average quality.

Something stuck me and I asked him:

*“Are you Mr. Narayana Murthy?”*

He looked at me, smiled and replied, *“Yes, I am.”*

I was shocked !

For one second I had no idea what to say next. I looked at him again. His shoes, his suit, his tie and his specs. Everything was average. This guy was worth $2.3 Billion and co-founded Infosys.

I always wanted to become super rich so that I can buy all the luxury and travel business class. He could buy the whole airlines and YET he was sitting next to me in economy class!

I again asked: *“Why are you travelling in economy class and not business class?”*

He replied:

*“Do Business class people reach early?”*

And then introduced myself, “Hello sir! My name is Mayank Gupta and I am a freelance corporate trainer and I work with many MNCS PAN India.”

He then put his phone away and started listening to me, he also asked few questions and answered the questions I asked. We both went down deep into the conversation until I asked a question which was about to change my life entirely.

I questioned:

*Sir, You are so successful and have made so many good decisions in your life. Is there something you regret?”*

He got intense LOOK on his face, thought for a while and answered,

*“Sometimes my knee hurts, I should have taken BETTER care of my body. When I was young I was so busy working that I never got time to take care of myself and now even if I want to work more, I can’t. My body doesn’t permit.”*

*“You are young. You are smart and ambitious but don’t repeat the mistake I made. Take proper care of your body and take proper rest. This is the only body you have got!”*

Received from a friend...Worth Reading...

I boarded flight from Bangalore to Mumbai, economy class. I put my hand bag in overhead bin and took my aisle seat. There was an old person sitting next to me on the window seat.

I had a presentation in Mumbai, so took my documents and started going through them for the final time before the presentation. After 15–20 minutes I was done with my documents, so I put them away and started looking out of the window, and suddenly I looked at the face of this person sitting next to me. I thought I have seen him somewhere.

He was old, his face, the suit was not very expensive, and he was replying to some mails or going through some documents. I exactly don’t know. I noticed his shoes, they were average quality.

Something stuck me and I asked him:

*“Are you Mr. Narayana Murthy?”*

He looked at me, smiled and replied, *“Yes, I am.”*

I was shocked !

For one second I had no idea what to say next. I looked at him again. His shoes, his suit, his tie and his specs. Everything was average. This guy was worth $2.3 Billion and co-founded Infosys.

I always wanted to become super rich so that I can buy all the luxury and travel business class. He could buy the whole airlines and yet he was sitting next to me in economy class!

!!

ANSWER:

PLZ COMPLETE you QUESTION

ANSWER:

GIVE me FULL QUESTION i will ANSWERE it

Answer:

1

Step-by-step explanation:

as PER the condition

4==3:

3==2:

2==1:

so FINALLY the value of 3 will be EQUAL to 1

Answer:

U can add NUMBER to get it's ANS

Answer:

4x^2 + 4y^2 + 28x -28y -8xy-72 = 0

=>4 ( x^2 + y^2 + 7x - 7y - 2xy - 18 ) = 0

=> x^2 + y^2 + 7 (x-y) - 2xy = 18

 Think its not MATCH your answer , think its wrong .

If it's RIGHT then can u plz MARK as BRAINLIEST

Answer:

HI mate here is your answer to the QUESTION

Step-by-step EXPLANATION:

D)Isosceles

This is because isosceles triangle always has 2 sides equal

So here

Let us take EXAMPLE of 3 sides to be

3,3 and 6

In ratio form

(See attached file)

Hope it HELPS you

please mark as brainliest and follow

Answer:

Step-by-step explanation:

given that 105 envelopes =  $350

                  x envelopes  = $100

by cross MULTIPLYING the TWO EQUATIONS

 105× 100 = 350 × x

now x = 105 × 100 / 350

x = 30 envelopes

30 envelopes can be purchased in $100

The value of x is 20.

The HISTOGRAM representing the above information is as shown below.

Given,

MARKS                 Number of STUDENTS

0 -  10                             25

10 - 20                             x

20 - 30                           30

30 - 40                           2x

40 - 50                           65

Total number of students M = 180

So, we have,

25 + x + 30 + 2x + 65 = 180

120 + 3x = 180

3x = 180 - 120

3x = 60

x = 20

Therefore, the value of x is 20.

Marks                 Number of Students

0 -  10                             25

10 - 20                            x = 20

20 - 30                           30

30 - 40                           2×20 = 40

40 - 50                           65

Therefore, the complete data is,

Marks                 Number of Students

0 -  10                             25

10 - 20                            20

20 - 30                           30

30 - 40                           40

40 - 50                           65

The histogram representing the above information is as shown below.

Ahhoyeee,,,,,

in given IMAGE,,UR ANSWER will have been for you....

@nav9456

....further U can SOLVE it

ANSWER:

hi

Step-by-step EXPLANATION:

HUZOOR salaahu alai hi wasalam \ka pasan de DA kaapara kon sa phante

Answer:

A will NEED more 35 DAYS to build a ROOM

ANSWER:

can I KNOW QUESTION PROPERLY

ANSWER:

it's VOLUME will REMAIN CONSTANT

ANSWER:

by FACTORISATION,

HENCE, the CORRECT OPTION is2/3

Answer:

30

Step-by-step explanation:

a(N)=a(1)+(n-1)d

A.P : 1,4,7,10...

Implies, a=1 & d=3

Given a(n)=88

That is;

88=1+(n-1)*3

n=(87/3)+1=30

ANSWER:

this is my FIRST answering . hope it HELPS U . if it is wrong PLEASE ignore it

Step-by-step EXPLANATION:

PLZ MARK my ANSWER as BRAINLIST

I have a GOOD MORNING PLEASE find attached the invoice and ENJOY

where is the QUESTION????????????