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ANSWER:

Sum of first n NATURAL numbers = n(n+1)/2.

To find the mean, We DIVIDE the sum by the total number of entitities, which is n in our case.

So, Mean = {n(n+1)/2}/n.

So, Mean = (n+1)/2.

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Step-by-step explanation:

Answer:

500 m³

Step-by-step EXPLANATION:

13 cm is THIRD SIDE.

bu using pythagoras THEOREM

ANSWER:

BRO I'm which CLASS U are

ANSWER:

idk also but TRIED my best

Step-by-step EXPLANATION:

let 4,3,3 be 4x,3x and 3x

Malachy gets 8 more sweets so 8+4x

NOW,

TOTAL sweets=4x+3x+3x

ANSWER:

(xcube+4x-1)WHOLE SQUARE

Answer:

a = 0 \: and \: b = 1

Step-by-step EXPLANATION:

LHS=\FRAC{7+3\sqrt{5}}{3+\sqrt{5}}-\frac{7-3\sqrt{5}}{3-\sqrt{5}}=\frac{(7+3\sqrt{5})(3-\sqrt{5})-(7-3\sqrt{5})(3+\sqrt{5})}{(3+\sqrt{5})(3-\sqrt{5})}=\frac{21-7\sqrt{5}+9\sqrt{5}-15-(21+7\sqrt{5}-9\sqrt{5}-15)}{3^{2}-(\sqrt{5})^{2}}

=\frac{21-7\sqrt{5}+9\sqrt{5}-15-21-7\sqrt{5}+9\sqrt{5}+15)}{9-5}

=\frac{4\sqrt{5}}{4}

=\sqrt{5}---(1)

RHS = a+\sqrt{5}b--(2)

Now\\0+\sqrt{5}=a+\sqrt{5}\\from\:(1)\:and\:(2)

a = 0 \: and \: b = 1

Therefore,

a = 0 \: and \: b = 1

Because HCF FULLY DIVIDES the number. And the LCM is the number that is fully divisible by the number.

Hope this helps you out

ANSWER:

Step-by-step EXPLANATION:

this question can be SOLVED by using thales theorm corollary or BPT corollary

in ADC,by  BPT

we get

af/ad=ae/ac .                   eq1

in ABC,by BPT

we get

ad/ab=ae/ac .                 eq2

from 1 and 2

we get

af/ad=ad/ab

by cross multiplying

ad²=af×ab    

Step-by-step EXPLANATION:

HOPE it's HELPFUL

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ANSWER:

Step-by-step EXPLANATION:

        this a STANDARD triangle its angles are 90 , 37 , 53

           u should remember this and as per ur question a = 37 degree

               since smaller side opposite ANGLE is also small

   hope it HELPS u let me know.....................

Answer:

9:10...

Step-by-step EXPLANATION:

SHOWN above PLEASE OBSERVE...

ANSWER:

sinA/1-cosA = COSECA + COTA

LHS

sinA/1-cosA

= sinA(1+cosA)/(1-cosA)(1+cosA)

= sinA(1+cosA)/(1-cos2A)

= sinA(1+cosA)/sin2A

= 1+cosA/sinA

= 1/sinA + cosA/sinA

= cosecA + cotA

= RHS

Hence, PROVED!

ANSWER:

Step-by-step explanation:

Let d and D be the diameters of the two cones. So d:D = 4:5 So 2r:2R = 4:5 Hence R:R = 4:5

If v and V be the volumes of the two cones v/V = 1/4. So 1/3 π r^2 h/1/3πR^2 H = 1:4

(r/R)^2 h/H = 1:4 IMPLIES (4/5)^2 h/H = 1:4. So h/H = 25/64

Ratio of their HEIGHTS is 25:64

ANSWER:

Step-by-step explanation:

LET the two NUMBERS be a and b respectively

and a=24

Therefore, as we know

a×b = hcf×lcm

Implies,

24×b= 4×120

Implies that,

b= 20

ANSWER:

It is TRUE and a is CORRECT

HYY DUDE

1. (n+1)/2 is the median of the numbers is S. 2.

Hope it's HELPS you ✨

ANSWER: 0

Step-by-step explanation:

Foci (−1,1) & (1,1) of ellipse.

Passes through (0,0)

Centre of ellipse =(0,1)  MIDPOINTS of the LINE between focus

value B=1

ae=1

a  

1−  

a  

2

b  

2

​  

​  

⇒a  

1−  

a  

2

1

​  

​  

=1⇒  

a  

2

−1

​  

=1

a=  

2

​  

centre is shifted to (0,1).

(  

2

​  

)  

2

(x−0)  

2

​  

+  

1

(y−1)  

2

​  

=1

2

x  

2

​  

+  

1

y  

2

+1−2y

​  

=1

x  

2

+2y  

2

+2−4y=2

x  

2

+2y  

2

−4y=0

ANSWER:

the answer I THINK is

Answer:

20%

Step-by-step explanation:

CP of SIX TOFFEES = Rs 1

CP of one toffee = Rs 1/6   ----- (1)

SP of 5 toffees = Rs 1

SP of 1 toffee = Rs 1/5          ---- (2)

Comparing (1) and (2)

TAKING LCM = 30

1/6 and 1/5 become 5 and 6  in the numerator

Since CP (5) less than SP (6), we conclude that the transaction is PROFIT.

Actual profit = 6-5 = 1

Profit percentage = profit X 100/CP

= 1 X 100/5 = 20%        

Ans: 20%

PLEASE MARKET BRAINLIEST and ANSWER is ZERO

ANSWER:

s it's CORRECT

can you WRITE NEATLY

Answer:

71/3 into THREE parts.

Step-by-step explanation:

71/3 DIVIDED by 3

71/3*1/3

71/9....

HOPE IT HELPS.......

93

We GET this by square root of 8649

Because rows and columns are equal

LET row and COLUMN be X

As total no. of trees are X*X

So, x^2 =8649

Answer:

Step-by-step explanation:

If x³-6x²+ax+b is exactly divisible by x²-3x+2, then it will ALSO be divisible by (x-1)(x-2)[Factors of x²-3x+2].

THEREFOR Putting X=1 in the equstion x³-6x²+ax+b-:

1-6+a+b = 0

a+b = 5 ---------EQ(i)

putting X= 2 in the EQUATION x³-6x²+ax+b-:

8-24+2a+b = 0

2a+b = 16-------------eq(ii)

On solving Eq 1 & 2

a=11

b=-6

ANSWER:

x=5/2 is the answer HOPE HELPS you

Step-by-step EXPLANATION:

this is your ANSWER . HOPE it HELP

ANSWER:

f+gg-f

13589

Step-by-step explanation:

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Answer:

160

Step-by-step EXPLANATION:

PLS MAKE me BRANLIEST

ANSWER:

your QUESTION is not MAKE a SENSE

Answer:

There are several EASY equivalent versions of Euclid's fifth postulate. Two lines are said to be PARALLEL if they are EQUIDISTANT from one other and they do not have any POINT of intersection. Then, by Playfair's axiom (equivalent to the fifth postulate), there is a unique line m through P which is parallel to l.

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(3/4-7/4)/2= -0.5

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Step-by-step explanation:

33×3×3×3×3×3×3×3×3×3×3×3×3×3×3×3×3×3×3=12784876137

Answer:

60rs

Step-by-step explanation:

1 KILO AALU KA DAM= 10rs

6 kilo aalu ka dam= 10×6=60rs

Answer:

this STATEMENT is FALSE. 466 can be rounded off to the nearest 100 is 500

Answer:

MAXIMUM NUMBER of TERMS in linear POLYNOMIAL is 2

Answer:

The LCM of 6, 15, and 12 is 2×3×5×2 = 60.

prime factorisation of 60 is 60= 2×2 ×3×5.

we see that prime factors 3 and 5 are not in pairs. Therefore 60 is not a perfect SQUARE.

In order to get a perfect square, each FACTOR of 60 must be paired. So we NEED to make pairs of 3 and 5 . Therefore, 60 should be multiplied by 3×5,i.e., 15 .

Hence, the REQUIRED square number is 60×15

= 900.

Step-by-step explanation:

my MOTHER's AGE= 36yr.

my age= 12yr

so,ratio is 12/36.another rational number is 1/3

Answer:

2.i.TERMINATING or reccuring

ii.whole NUMBER.

iii.1.666666666666666

5.i.0.3846 and it is a terminating DECIMAL number

ANSWER:

i can t UNDERSTAND your answer

Answer:

1 ten RUPEE sikka

1 FIVE rupee sikka

1 TWO rupee sikka

1 ONE rupee sikka

1 more two rupee sikka

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ANSWER:

(y-5)(4=y-3)

= y-20=y-3

-20+3=y

y= - 23

ANSWER:

we have to SAY THANKS to them MAY be a TEACHER or she or he

ANSWER:

44 = 2*2*11

88 = 2*2*2*11

308 = 2*2*7*11

H.C.F = 2*2*11 = 44

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ANSWER:

once CHECK the QUESTION

ANSWER:

TELL me the VALUE of X.....

Step-by-step explanation:

CURRENT POPULATION of the city - Population 10 YEARS BACK.

Hope this will help you out.

ANSWER:answer is 1/3+ 2/3 =1

Step-by-step EXPLANATION:

ANSWER:

k=12

Step-by-step EXPLANATION:

ANSWER:

it is an OVERLAPPING SET