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8a + 9b

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As its linear anglesso 80+30+CAT= 180CAT= 70°now angle BAT= 80° = ABC= 80°

2a + 3b = 8a = (8 - 3b)/2.......(1)

3a - 4b = - 5..........(2)

Put value of a from eq(1) in eq(2)3(8-3b)/2 - 4b = - 524 - 9b - 8b = - 1034 = 17bb = 34/17 = 2

From eq(1)a = (8 - 3*2)/2 = 2/2 = 1

Assume 2a = 4bso a/b = 4/2 = 16/4(cross multiply and multiply 4.we do this in order to get b=b for the next step)also 4b = 5cso b/c = 5/4

first ka bhi dusre ka mines

i)3ii)-5 just put the value of x in the equation

ansafter putting given value in 6x-2x^2+3i) putting x=0=6(0)-2(0)^2+3=0-0+3=3 ans

ii) putting x=-1=6(-1)-2(-1)^2+3=-6-2+3=-8+3=-5 ans

For a squarematrix of order n, |kA| = k^n|A||2A| = k |A|2^3|A| = k |A|k=8

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Plz can you tell me this answer with using identity a square plus 2ab plus b square

C = 5²+13²C = 25 + 169C = 194

Given :

a+b+c = 6

a² + b² + c² = 34

We know,

(a+b+c)² = a² + b² + c² + 2(ab+bc+ac)

6² = 34 + 2(ab+bc+ac)

36 - 34 = 2(ab+bc+ac)

2/2 = (ab+bc+ac)

(ab+bc+ac) = 1

(a+b)^2= a square + b square+ 2ab

a^2 + 4b^2 = 12ab

a^2 + (2b)^2+4ab = 12ab + 4ab

(a+2b)^2 = 16ab

Take log on both sides

2log(a+2b) = log16 + logab

log(a+2b) = 1/2 (4log2+logab)

log(a+2b)=2log2+1/2logab

tq

(2a-b)^2+(2a-b)-84a^2+b^2-4ab+2a-b-84a^2+2a+b^2-b-4ab-8

(7a + 2b) ( a + 4b)

7a² + 28ab + 2ab + 8b²

7a² + 8b² + 30ab

Two adjacent sides of a parallelogram are 10cm and 12cm. If it's one diagonal is 14cm long, find the area of the parallelogram.

a² + 4b² - 4ab = (a)² + (2b)² - (2)(a)(2b) = (a - 2b)²

Factorization

(a+b)² - 4a - 4b

(a+b)² - 4 ( a + b)

Take ( a + b) common

(a+b) ( a + b - 4)

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1) red line2) blue line

We use the remainder theorem here

Given divider = x + 1

So of it is a factor p (x) = 0

x + 1= 0 => x = -1

When will it be a factor, when we subtract the remainder

According to the question

P ( -1 ) - r = 0

Polynomial =x^3+3x^2 -3x-1

Therefore-1^3 +3 × -1 ^2 -3 ×-1 - 1 -r =0-1 +3+3-1 = r

Remainder = 4

iska answer hai fourhai

0, 5/2 is the correct answer of the given question

If |A|=4 then |-2A|=8

NONE OF THE ABOVE THIS IS THE WRONG QUESTION

this question is wrong

option 2 is the correct answer

Cost price for iron safe=₹12160+₹340=₹12500

Selling price=₹12875

Gain=Selling price-Cost price=₹12875-₹12500=₹375

Gain percent=(375/12500)*100= 3%

L.c.m of 4,7,13=364we known that the greatess 4 digit no. is 9999now we divide the l.c.m by greatness no. 9999we get 27 as quotient and 171 as remainder now substrate the remainder by 99999999-171=9828

sin(A+2B)=sin60°.=>A+ 2B=60°. cos(A+4B)=cos90° =>A+4B=90°. Now we have

Subtract both equation. - 2B=-30° =>B=15°. Hence A+2.15°=60°=>A=60°-30°=30°. A=30°,B=15°

As we have sin(A+2B)=sin60°.=>A+ 2B=60°. cos(A+4B)=cos90° =>A+4B=90°. Now we havenow

If angle A and angle B. are acute angle and tanA = tanB so, sinA/cosA = sinB/cosB => sinAcosB -sinBcosA. = 0=> sin(A-B) = 0 ... ( standard identity ) so A-B = 0 or A = B.