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y=2x+3and y=3x+1Put value of y from one equation2x+3=3x+1=-x=-2hence X=2y=2x+3y=2*2+3=4+7=7

[(10cosx-0)^2+(0-10sinx)^2]^(.5)[100(cosx^2+sinx^2)]^(.5)=10

Simultaneous Equations

Simultaneous equations and linear equations, after studying this section, you will be able to:

solve simultaneous linear equations by substitutionsolve simultaneous linear equations by eliminationsolve simultaneous linear equations using straight line graphs

If an equation has two unknowns, such as 2y + x = 20, it cannot have unique solutions. Two unknowns require two equations which are solved at the sametime (simultaneously) − but even then two equations involving two unknowns do not always give unique solutions.

kya hua

By elimination method x/2 + 2y /3 = - 1 ………..(1) x – y/3 = 3 ………..(2)

Multiplying equation (1) by 2, we obtain

x + 4y/3 = - 2 ………(3) x – y/3 = 3 ………..(2)

Subtracting equation (2) from equation (3), we obtain

5y /3 = -5

Divide by 5 and multiply by 3 we get

Y = -15/5 Y = - 3

Substituting in equation (2), we obtain

x – y/3 = 3 ………..(2) x – (-3)/3 = 3 x + 1 = 3 x = 2

Hence our answer is x = 2 and y = −3

By substitution method x – y/3 = 3 ………..(2)

Add y/3 both side we get x= 3 + y/3 ……(4)

Plug this value in equation (1) we get

x/2 + 2y /3 = - 1 ………..(1) (3+ y/3)/2 + 2y /3 = -1 3/2 + y /6 + 2y/3 = - 1

Multiply by 6 we get 9 + y + 4y = - 6 5y = -15 Y = - 3 Hence our answer is x = 2 and y = −3

Red line is x+y = 5

Blue line is x-y = 3

Point of intersection is (4,1)

L=640 ; b=300; h=200 cm,=640×300×200/80×60×40=200 containers

thanks

I think -8 Celsius ois it correct

b) inert gas is the correct answer

Any of a large group of minerals consisting of hydrated aluminosilicates of sodium, potassium, calcium, and barium. They can be readily dehydrated and rehydrated, and are used as cation exchangers and molecular sieves.

merits : ●Saving time.●Giving each employee tasks that best suit her skills.●Increasing productivity.●Needing only one set of tools, rather than many,for the tasks at hand.

demerits : ●Not developing workers’ skills.●Division of responsibilities.●Creating a system of dependence.●Reduced worker mobility.

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876/8 = 109.5

876/8Answer = 109.5

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109.5 is the correct answer kyon kiJab ham 8 divided 876

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we get after converting of 876/8 = 109.5

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876/8 = 109.5here after we divide by 8 to 870 then it divide by 1 by 8 ..then 7 cannot be divide because 7 is less than so we take 6 so value become 76 ..and above we take 0 so after divide it come 9 reminder is 4 ..for dividing 4 we take 0 so value become above 109. now 40 is divide by 8 so it become 109.5

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to find decimal point we have to divide.which is equal to876÷8= 109.5

109.62 is the correct answer of 816÷8

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109.5

109.5 when we divide them

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we need to find the correct decimal on dividind 876/8so, the answer we get is 876/8=109.5

answer is 109.5 by dividing 8 by 876

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Ans 109.5to convert any fraction into decimal where to divide the numerator by denominator.

876/8=109.5, this ans

878 ÷8 = 109.5 we get this answer as decimal after dividing

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109.45 is the correct answer

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109.5 IS THE CORRECT ANSWERE

the difference between the temperature is 10.7

x²+5x+6= x²+3x+2x+6= X(X+3) +2(X+3)= (X+3)(X+2)=> X = -2, -3.

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X+y = 180Y +70+65= x+y= 180X= 135Y= 65

y=180-(70+65)=180-135=45x=135

X+Y=180y+70+65=X+Y=180x=135y=65

y = 45 x = 135this is the correct answer for this question Thank you

correct answer is X = 135 , Y = 45

x=70+65x=135x+y=180135+y=180y=45

thanks

l : b : h = 3 : 2 : 5 suppose common ratio is k l = 3k , b = 2k , h = 5k volume = 810cm*cm*cm = lbh 3k*2k*5k = 810 k*k*k = 27 k = 3 l = 9cm b = 6cm h = 15cm

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Y have two zeros as , number of zero is equal to number of times the curve intersects or touches x - axis

(a-b)x(a+b)= axa + axb - bxa - bxb

you know axa = 0 and bxb = 0

you know

-bxa=axb then

(a-b)x(a+b) = axb +axb = 2(axb)

(b) 11is a correct answer

Radioactivity is a nuclear reaction of “spontaneous decomposition”. This means that an unstable nuclide decomposes into a more stable one, while at the same time emitting “radiation”. The daughter nuclide that results from this disintegration might not be stable, and thus disintegrates into a third one, which can then continue the process until a stable nuclide is finally produced. The successive nuclides from a group of disintegrations that conform a radioactive series or family.

Elements with a high atomic number such as uranium , thorium , radium have a property of spontaneously emitting invisible , highly penetrating and high energy radiation. This property is called radioactivity.

arranging data in ascending order 36,37,38,39,39,40,41,43,43,44,45 there are 11 terms so median = 6th term = 40

(2) (-∞, -3) U (2, ∞)

-8 (-5)----- + -------- 7 4

Take LCM of denominator 7 and 4

-32 + (-35)---------------- 28

-67-----28

b × b × b × b = b⁴ ( four times)

from data we can say that6 students are equivalent to 16.67%so total students are=(100×6)/16.67=36

direct and invrse proportion

2+3i>1+4i is true for

A number is divisible by 4 if the last two digits of the number is divisible by 4. So, numbers divisible by 4 are 810524, 35056, 8967224, 521032 and 27000.

A number is divisible by 8 if the last three digits is divisible by 8, which are 35056, 8967224, 521032 and 27000.

A number divisible by both 4 and 8 is a number divisible by 8, which are 35056, 8967224, 521032 and 27000.

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Both the numbers are divisible by two because the last digit is even number.Any number who has its last digit even it is divisible by 2

For this find cost of 1 tablethat is 7500/10=750rupeeshence in 90009000/750=12 tables.

Prime factorization help us to find the different ways of making a number by multiplying it's factors.

No. of fireflies mini caught = 37No. of fireflies I caught = 3So Difference in Fireflies = 37-3 = 34so Mini caught 34 more flies than me.

11th me hoh??????????????