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• ACCORDING to given QUESTION :

Answer:

1 VERTICAL angles

2/3/4 PARALLEL, parallel lines

5 360°

6 where is the ANGLE?

GIVEN

find 20th term of an AP whose 5th term is 13 and 9th term is 21

SOLUTION

• a5 = 13
• a9 = 21

→ an = a + (N - 1)d

→ a5 = a + (5 - 1)d

→ 13 = a + 4d

→ a + 4d = 13 ------(i)

Now,

→ a9 = a + (n - 1)d

→ 21 = a + (9 - 1)d

→ 21 = a + 8d

→ a + 8d = 21 ------(ii)

Subtract both the equations

→ (a + 4d) - (a + 8d) = 13 -21

→ a + 4d - a - 8d = 8

→ -4d = - 8

→ d = 8/4 = 2

Putting the value of d in equation (i)

→ a + 4d = 13

→ a + 4*2 = 13

→ a + 8 = 13

→ a = 13 - 8 = 5

First term = 5

Common difference = 2

→ a20 = a + (n - 1)d

→ a20 = 5 + (20 - 1)2

→ a20 = 5 + 19*2

→ a20 = 5 + 38

→ a20 = 43

Hence, 20th term of A.P is 43

ANSWER:

2-1

5-3

Step-by-step EXPLANATION:

HEY MATE your Answer

Answer:

HEAD:285 TIMES

tail:215 times.

A coin is TOSSED 500 times and we get.

More times head 70 times

Then more chances head

ANSWER:

The area of the triangle is 720 cm^2

The altitude of triangle corresponding to the shortest side is 80 cm

Step-by-step explanation:

To find the area of the triangle and the altitude corresponding to the shortest side

PERIMETER = 180 cm(given)

Two sides are 18 cm and 80 cm(given)

Step 1 = Find the third side of the triangle through the perimeter of the triangle by naming the side as x

That is,

18 + 80 + x = 180

180 - 98 = x

x = 82 cm

Step 2 = As we know that the area of the triangle when a, b and c are three different sides  is

Area = s(s - a)(s - b)(s - c) WHOLE ROOT

s = perimeter/2

 = 180/2

s = 90 cm

a = 18 cm

b = 80 cm

c = 82 cm

Now find the area

Area = 90(90 - 18)(90 - 80)(90 - 82) Whole root

         = 90(72)(10)(8) Whole root

          = 9 X 10[90] X 2 X 36[72] X 10 X 2 X 4[8] Whole root

         = 9 X 10 X 10 X 2 X 2 X 36 X 4 Whole root[rearranged]

         = 9 X 100 X 4 X 36 X 4 Whole root

As the numbers are in the square root so we will find square of each number

= 3[3^2 = 9] X 10[10^2 = 100] X 2[2^2 = 4] X 6[6^2 = 36] X 2[2^2 = 4]

The sign of the square root of the numbers will be removed as we found the square roots of the numbers

Now,

Area = 3 X 10 X 2 X 6 X 2

        = 30 X 24

Area = 720 cm^2

Step 3 = Now equate the two different ways to calculate the areas of the triangle

As, according to the question we have to find altitude corresponding to the shortest side

That is 18 cm

Equation forms like this

Area = Area(of the triangle)

s(s - a)(s - b)(s - c) whole root = 1/2 X base X height

720 cm^2 = 1/2 X 18 X HEIGHT

Find the value of the altitude corresponding to the shortest side through the rules of linear equation.

720 = 9 X HEIGHT

720/9 = HEIGHT

Altitude(height) = 80 cm          

Answer:

Given cos theta is equals to 21 by 29 determine the value SECANT theta by TAN theta + cot theta

is the answer

ANSWER:

C. -1/3

Probability of an EVENT cannot be NEGATIVE.

ANSWER:

Here's your answer mate

Hope it HELPS you to

PLZZ MARK me as the BRAINLIEST

Plzz plz follow me

ANSWER:

JOHN had the PROBABILITY

ANSWER:-

8163 is the highest common factor.

SUGGESTION :-

usually for finding a highest common factor we need atleast 2 numbers.

REQUEST:-

plz subscribe my youtube channel SOWMYA NAGARAJAN with symbol S.

ANSWER:

answer is 56

because

2=1×2

so,

30=5×6

=56

mark me as BRAINLIEST answer

ANSWER:

ans:1- 1(one)

2- 2

3- 1

4- 1

Hope it will be HELPFUL

please mark me as brainielist

ANSWER:

...............MARK me as BRAINLIST

ANSWER:

2400 is the answer BUDDY

ANSWER:

sorry but I can't understand your question FIRSTLY mark me as brainallist...plZz.... then I can SOLVE your PROBLEM.......

Step-by-step explanation:

Let the length of the train be x meter.

Train crossed the pole is 2 sec. So distance covered in 2 sec. is x meter.

Hence, the speed of train = distance / time = x / 2 ——- (1)

In second case,

Total distance covered by train is = ( x + 250) meter

Time take = 7 second

So, speed of train = (x + 250 ) / 7 ——(2)

From (1) and (2)

x/2 = (x+250)/7

7x = 2X + 500

5x = 500

x = 100

Hence the length of train is 100m

2.7 million jobs estimated for data science ROLES in 2020.

let x be the length of train in meters and y be the speed of train in m/s.

now the train passes of length x meters having y speed passes the pole in 2 sec.

THEREFORE…

x/y = 2,

now y=x/2.

and now same train passes the BRIDGE in 7 seconds having length 250m..

now,

(x+250)/7 = y

but y=x/2… therefore..

(x+250/7) = x/2..

solving this we get x=(length of train)=100 m.

ans 1 and 2 are: the probability that once given day was CORRECT or not correct is 250 as the POSSIBILITIES here is 250.∴ans for both the qt is 250

Step-by-step explanation:

ANSWER:

SORRY about this answer okkkkkkkkk

Answer:

IRRATIONAL number

Step-by-step EXPLANATION:

HOPE it HELPS you

mark as brainlist

ANSWER:

tt2-st+s2t2-s3

3=cube

2 SQUARE

Answer:

PERCENTAGE = 24/80×100

= 24/8 × 10

= 3 × 10 = 30%

Hope it HELPS

ANSWER:

X-2X = x +2

x - x - 2x = 2

-2x = 2

x = -2/2

x = -1

hope it HELPS you

I am REALLY very SORRY to SAY this .......I DON'T UNDERSTAND THE HANDWRITING.......

ANSWER:

DIGESTION is COMPLETED in SMALL INTESTINE

gm GENTLEMEN .

here u are

x+3y=5 ------(1)

3x+ky=15-----2

now eq1×3

3x+9y=15 -----3

now subtracting eq3 and eq2

9-K=0

k = 9

HOPE this HELPS you

Step-by-step explanation:

F(x)=x²-1

Roots are ALPHA ,beta

Alpha +Beta=-b/a=0

Alpha×beta=c/a=-1

Now we have to Find Polynomial whose ROOT are 2alpha/beta,2beta/alpha

Now we Structure of Quadratic Equation

ax²+(SUM of Roots)x+product of Roots

So sum of Roots

2alpha/beta+2beta/alpha

2alpha²+2beta²/alpha×beta

(For Convience i m taking alpha=x,beta=y)

2x²+2y²/xy

2(x²+y²)/xy

We know

(x+y)²-2xy=x²+y²

0²-2×-1=x²+y²

x²+y²=2

xy=-1

Sum of Roots 4/-1=-4

Product of Roots

4xy/xy

=4

Sum=-4

product=4

Quadratic Equation

x²+4x+4

p(x)=x²+4x+4

ANSWER:VOLUME of CYLINDER= πr2h

22/7×1.4×1.4×5.6

Volume of COME =1/3 πr2h

1/3 ×22/7×1.4×1.4×5.6

Remaining volume =2/3 ×22/7 ×1.4×1.4×5.6

Step-by-step EXPLANATION:

ANSWER:

1

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ANSWER:

k=12

hope it HELPS U.......

• ✦ SUM of zeroes = 3
• ✦ p(x) = 3x² - kx + 6

• ✦ VALUE of k

p(x) = 3x² - kx + 6

• a = 3
• b = -k
• c = 6

sum of zeroes = - b/a

➝ 3 = -(-k)/3

➝ 3 = k/3

➝ k = 3×3

➝ k = 9

So,

Value of k is 9.

p(x) = 3x² - kx + 6

➝ 3x² - 9x + 6

➝ 3x² - 3x - 6x +6

➝ 3x(x -1) -6(x -1)

➝ (3x-6) (x -1)

➝ x = 2 or x = 1

Verification :-

sum of zeroes = - b/a

➝ 2 +1 = -(-9)/3

➝ 3 = 3

product of zeroes = c/a

➝ 2×1 = 6/3

➝ 2 = 2

LHS = RHS

HENCE , Verified

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ANSWER:

very BAD is my answer

FOLLOW me

7x-42⇒7(x - 6)

HENCE factorised

.

Hope it helps!!

KEEP calm and STUDY HARD

THANKS for asking

Step-by-step explanation:

SET of whole numbers = { 0, 1, 2, 3 , 4 ,

5 , ......}

Non - zero whole numbers are 1 , 2 , 3 , 4 , 5 ,6 , .....

Now take some example which follow the above given rule :

i ) whole number = 5

Its successor =6

Product = 5 × 6 = 30 (even number)

2) whole number = 20

Its successor = 21

Their product = 20 × 21 = 410 (even number )

We can conclude that product of any non zero whole number and its successor is ALWAYS even number.

Option A is correct.

Or

Tip :

____

In product of TWO numbers one

number is even .

Therefore as we know that product of

one number and any non zero whole

number is always even.

I hope this will useful to u.

Step-by-step explanation:

525÷7 =75

525*2=1050

1050+75= 1125 ANS

Answer:

FIRST RECIPROCAL the 3/10 and CHANGE the divide =MULTIPLY then the answer is in fraction 28/9 if you want the answer in non fraction the answer will be 3.11111111

ANSWER:

Square root of the number is 47

I HOPE it's HELP you

PLZ MARK my answer as a brainliest answer

/* ACCORDING to the PROBLEM GIVEN */

THEREFORE.,

•••♪

Answer:

Step-by-step EXPLANATION:

So 1206-6=1200

And 321-6=315

And hcf of 315 and 1200 is 15

So ANS is 15

SOLUTION :

°•° Let Assume 7 + √5 is rational number.

• Rational Number have some condition.
• b ≠ 0.
• HCF ( a , b ) = 1.

A/Q,

★ Here, We are notice √5 is irrational number and a - 7b /b is rational number.

So, Our assumption was wrong 7 + √5 is not rational number it's irrational number.

Hence Proved.

Some More QUESTIONS :

• prove that √p + √q is irrational number.
• prove that √p is irrational number.
• prove that √5 + √7 is irrational number.
• prove that 2√5 + 4 is irrational number.

Answer:

194

Step-by-step explanation:

Since you have a three digit number the hundredth digit is not ZERO. Then from the fact that h = t -8, t must be 9 because 9 is the only positive number below 10 which can be applied to the equation h= t-8 so that we can get a positive number in the hundredth digit, then U = 9-5 or 4.Hence we get h=1 , t=9 , u=4. So Your answer is 194.

(Here h-hundredth digit

t-tens digit

u-ones digit)

ANSWER:

THANK you GUYS ¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤¤®®®®®®®®®®®®©©©©©©©©

Answer:

Please MARK me as brainliest

Step-by-step EXPLANATION:

(-854) - X = (-514)

(-854) + 854 + (-x) = (-514)+854 ( -854 + 854= 0)

(-x) = 340

x = -340 ( changing of symbol from -x to x )

ANSWER:

10 is a answer ..............

According to the PROBLEM,

Sum of two digits is 9.

If 27 is ADDED to the number the digits are REVERSED.

So,the NUMBERS is 36.

Because 3+6=9

If we add 27 to 36 we GET 63 , hence the number is reversed.

ANSWER:

LENGTH= 15cm

area=225cm square

breadth=?

Step-by-step explanation:

area=length*breadth

therefore- 225  = 15 * ?

                  ? = breadth

by dividing 225 by 15 we get-

225/15 = 15cm

thank you!!!

ANSWER:

your answer is 90

Step-by-step explanation:

3√2×√5

3×3×2×5

90 ANS.

ANSWER:

0 , 5 , 10 , 15

is the answer