What is n plus the fraction 1 forth equals 9 twentieths?

Description : A certain number has three digits. The sum of the three digits equals 36 times this number. Seven times the left digit plus 9 is equal to 5 times the sum of the two other digits. 8 times the second digit minus 9 is equal to the sum of the first and third.What is the number? -Riddles

Last Answer : This one is fairly easy - 324 is the answer.

What is the length of the tangent line from the point 9 0 to the circle x2 plus 8x plus y2 -9 equals 0?

Description : What is the length of the tangent line from the point 9 0 to the circle x2 plus 8x plus y2 -9 equals 0?

Last Answer : Equation of circle: x^2 +8x +y^2 -9 = 0Completing the square: (x+4)^2 +y^2 = 25Radius of circle: 5Center of circle: (-4, 0)Distance from (9, 0) to (-4, 0) = 13 which is ... the length of the tangent line is 12 unitsNote that the tangent line of a circle meets the radius of thecircle at right angles

Absent Father plus Angry Daughter equals Facebook friends?

Description : Absent Father plus Angry Daughter equals Facebook friends?

Last Answer : You probably shouldn't have accepted his friend's request if you planned on ignoring him. You don't make someone your friend' on Facebook and then intentionally ignore them. That doesn't make much ... and send him a message telling him why and apologize for accepting his request in the first place.

If eleven plus two equals one, what does nine plus five equal? -Riddles

Description : If eleven plus two equals one, what does nine plus five equal? -Riddles

Last Answer : 11 o'clock plus 2 hours = 1 o'clock 9 o'clock plus 5 hours = 2 o'clock

Find the value of 7plus root five ÷by seven minus root five minus seven minus root five ÷by seven plus root five equals to a+7÷11root five b -Maths 9th

Description : Find the value of 7plus root five ÷by seven minus root five minus seven minus root five ÷by seven plus root five equals to a+7÷11root five b -Maths 9th

Last Answer : This answer was deleted by our moderators...

what plus what equals 180?

Description : what plus what equals 180?

Last Answer : lol who doesn't know this XD

what plus 20 equals 69?

Description : what plus 20 equals 69?

Last Answer : Let the number is xSo,X+20=69X=69-20X=49THE NUMBER IS 49SO,49 plus 20 equal to 69.•.

8 plus what equals 24?

Description : 8 plus what equals 24?

Last Answer : 16

what plus 15 equals 80?

Description : what plus 15 equals 80?

Last Answer : 65

negative 3 x plus 15 equals 18 Can someone solve this for me Thank you?

Description : negative 3 x plus 15 equals 18 Can someone solve this for me Thank you?

Last Answer : x = -1Since -3(-1) + 15 = 18

What is the length of a tangent line from the point 7 -2 to a point when it touches the circle x2 plus y2 -10 equals 49?

Description : What is the length of a tangent line from the point 7 -2 to a point when it touches the circle x2 plus y2 -10 equals 49?

Last Answer : x² + y² - 10 = 49→ x² + y² = 59= (x - 0)² + (y - 0)² = (√59)²→ circle has centre (0, 0) - the origin - and radius √59The point (7, -2) has a distance from the centre of the circleof:√((7 - 0)² + (-2 - 0)²) = √(7² + (-2)²) = √(49 + 4) = √53

What plus what equals 119?

Description : What plus what equals 119?

Last Answer : 32 33

What is the length of the circle radius if the circle is x2 plus y2 equals 1?

Description : What is the length of the circle radius if the circle is x2 plus y2 equals 1?

Last Answer : The center of the circle is at (0, 0) and its radius is thesquare root of 1 which is 1

What does The number 14 in the equation y equals 2x plus 14?

Description : What does The number 14 in the equation y equals 2x plus 14?

Last Answer : In the straight line equation of y = 2x+14 the slope or gadientis 2 and the y intercept is 14

What is x plus 6 equals 3?

Description : What is x plus 6 equals 3?

Last Answer : If: x+6 = 3 then the value of x is -3

What is the distance from a point on the x axis to the centre of a circle when a tangent line at the point 3 4 meets the circle of x2 plus y2 -2x -6y plus 5 equals 0?

Description : What is the distance from a point on the x axis to the centre of a circle when a tangent line at the point 3 4 meets the circle of x2 plus y2 -2x -6y plus 5 equals 0?

Last Answer : Circle equation: x^2 +y^2 -2x -6y +5 = 0Completing the squares: (x-1)^2 +(y-3)^2 = 5Centre of circle: (1, 3)Tangent line meets the x-axis at: (0, 5)Distance from (0, 5) to (1, 3) = 5 units using the distanceformula

What plus what equals 47 using add?

Description : What plus what equals 47 using add?

Last Answer : 45 + 216 + 313 + 448.2 + 38.8and so on ...

If a right triangle has legs of length 6 and 8 then we know the length of the hypotenuse is the square root of 6 plus 8 which equals 10?

Description : If a right triangle has legs of length 6 and 8 then we know the length of the hypotenuse is the square root of 6 plus 8 which equals 10?

Last Answer : Using Pythagoras theorem: 6^2 + 8^2 = 100 and its square root is10 which is the length of the hypotenuse

If the equation x2 minus ax plus 2b equals 0 has prime roots where a and b are positive integers then a minus b is equal to?

Description : If the equation x2 minus ax plus 2b equals 0 has prime roots where a and b are positive integers then a minus b is equal to?

Last Answer : I think you mean the roots are prime numbers.Let the two roots be primes p and qThen the equation factorises to (x - p)(x - q) = 0 which can beexpanded to give:x² - (p + q)x + pq = 0Which comparing ... = 2(It doesn't matter if the other prime is even (2) or not as itcancels out from a - b.)

What is the point of contact between the line y equals x plus 4 and the circle x2 plus y2 -8x plus 4y equals 30?

Description : What is the point of contact between the line y equals x plus 4 and the circle x2 plus y2 -8x plus 4y equals 30?

Last Answer : Equations: y = x+4 and x^2 +y^2 -8x +4y = 30It appears that the given line is a tangent line to the givencircle and the point of contact works out as (-1, 3)

What is the tangent line equation of the circle 2x2 plus 2y2 -8x -5y -1 equals 0 at the point 1 -1 on its circumference?

Description : What is the tangent line equation of the circle 2x2 plus 2y2 -8x -5y -1 equals 0 at the point 1 -1 on its circumference?

Last Answer : Circle equation: 2x^2 +2y^2 -8x -5y -1 = 0Divide all terms by 2: x^2 +y^2 -4x -2.5y -0.5 = 0Completing the squares: (x-2)^2 +(y-1.25)^2 = 6.0625Center of circle: (2, 1.25)Point of contact: (1 ... 9Tangent equation: y--1 = -4/9(x-1) => 9y = -4x -5Tangent line equation in its general form: 4x+9y+5 = 0

What number plus another number equals 40?

Description : What number plus another number equals 40?

Last Answer : There are far too many possibilities to list them all ! Someexamples are... 1 + 39, 4 + 36, 21 +19, 35 + 5.....

What are the points of intersection of the line 2x plus 5y equals 4 with the curve y squared equals x plus 4?

Description : What are the points of intersection of the line 2x plus 5y equals 4 with the curve y squared equals x plus 4?

Last Answer : If: 2x +5y = 4 then 25y^2 = 4x^2 -16x +16If: y^2 = x +4 then 25y^2 = 25x +100So: 4x^2 -16x +16 = 25x +100Transposing terms: 4x^2 -41x -84 = 0Factorizing the above: (4x+7)(x-12) = 0 meaning x = -7/4 or x =12By substitution into original equation points of intersection:(-7/4, 3/2) and (12, -4)

What number plus a number equals 0.79?

Description : What number plus a number equals 0.79?

Last Answer : How about: 0.7 plus 0.09 = 0.79

What is 2x plus 3y equals 17 and 3x minus 2y equals 0.5?

Description : What is 2x plus 3y equals 17 and 3x minus 2y equals 0.5?

Last Answer : It is a simultaneous equation and when solved its solutions arex = 71/26 and y = 50/13

What are the points of intersection between the line 3x -y equals 5 and the curve 2x squared plus y squared equals 129?

Description : What are the points of intersection between the line 3x -y equals 5 and the curve 2x squared plus y squared equals 129?

Last Answer : If: 3x-y = 5 then y^2 = (3x_5)^2 => 9x^2 -30x+25If: 2x^2 + y^2 = 129 then y^2 = 129-2x^2So: 9x^2 -30x+25 = 129-2x^2Transposing terms: 11x^2 -30x -104 = 0Factorizing the above: (11x- ... x = 52/11 or x= -2By substituting x into the original equation intersections areat: (52/11, 101/11) and (-2, -11)

What are the values of x y and k when the line y equals 3x plus 1 is a tangent to the circle x squared plus y squared equals k?

Description : What are the values of x y and k when the line y equals 3x plus 1 is a tangent to the circle x squared plus y squared equals k?

Last Answer : If y = 3x + 1 is a tangent to x² + y² = k (k > 0 since it isa square), then where they meet has a repeated root; they meetat:x² + (3x + 1)² = k→ x² + 9x² + 6x + 1 - k = 0→ 10x² + 6x + (1 - k) = 0This is the ... 3/10→ y = 3 -3/10 + 1 = 9/10 + 1 = 1/10→ point of contact is (-3/10, 1/10) with k = 1/10

What plus what equals 4.3?

Description : What plus what equals 4.3?

Last Answer : How about 4.0 plus 0.3 = 4.3 as one example

What is the equation of the tangent line that meets the circle x2 -4x plus y2 -6y equals 4 at the point 6 4?

Description : What is the equation of the tangent line that meets the circle x2 -4x plus y2 -6y equals 4 at the point 6 4?

Last Answer : Circle equation: x^2 -4x +y^2 -6y = 4Completing the squares: (x-2)^2 +(y-3)^2 = 17Point of contact: (6, 4)Center of circle: (2, 3)Slope of radius: 1/4Slope of tangent line: -4Tangent equation: y-4 = -4(x-6) => y = -4x+28Tangent line equation in its general form: 4x+y-28 = 0

What Solve a divided by 5 plus 3 equals 8?

Description : What Solve a divided by 5 plus 3 equals 8?

Last Answer : a/5 + 3 = 8a/5 = 5a = 25

What plus another number equals 26?

Description : What plus another number equals 26?

Last Answer : How about 20 plus 6 equals 26 as one example

What number plus 65 equals 90?

Description : What number plus 65 equals 90?

Last Answer : 35

What property is shown by the following expression 12 plus 13 equals 13 plus 12?

Description : What property is shown by the following expression 12 plus 13 equals 13 plus 12?

Last Answer : The commutative property.

What is 54 plus what equals 400?

Description : What is 54 plus what equals 400?

Last Answer : 346

What is the perpendicular bisector equation of the line y equals 5x plus 10 spanning the parabola y equals x squared plus 4?

Description : What is the perpendicular bisector equation of the line y equals 5x plus 10 spanning the parabola y equals x squared plus 4?

Last Answer : If: y = 5x +10 and y = x^2 +4Then: x^2 +4 = 5x +10Transposing terms: x^2 -5x -6 = 0Factorizing the above: (x-6)(X+1) = 0 meaning x = 6 or x =-1Therefore by substitution endpoints of the line are ... .5 = -1/5(x-2.25) => 5y= -x+114.75Perpendicular bisector equation in its general form: x+5y-114.75= 0

What is the point of contact when the line y equals 2x meets the circle x2 plus y2 -8x -y plus 5 equals 0?

Description : What is the point of contact when the line y equals 2x meets the circle x2 plus y2 -8x -y plus 5 equals 0?

Last Answer : If: y = 2xThen: y^2 = 4x^2If: x^2 +y^2 -8x -y +5 = 0Then: x^2 +4x^2 -8x -2x +5 = 0Transposing terms: 5x^2 -10x +5 = 0Dividing all terms by 5: x^2 -2x +1 = 0Factorizing the above: (x-1)(x-1) = 0 meaning x = 1By substitution into original equations point of contact is madeat: (1, 2)

What plus what equals 79?

Description : What plus what equals 79?

Last Answer : There are an infinite amount of answers for that, such as:1 + 782.5 + 76.538 + 41

What plus nine equals 63?

Description : What plus nine equals 63?

Last Answer : What is the answer ?

What plus what equals 28?

Description : What plus what equals 28?

Last Answer : this ...

What are the solutions to the simultaneous equations of y equals -2x and x2 plus y2 equals 80?

Description : What are the solutions to the simultaneous equations of y equals -2x and x2 plus y2 equals 80?

Last Answer : If: y = -2x then y ^2 = 4x^2If: x^2 + y^2 = 80 then x^2 +4x^2 = 80So: 5x^2 = 80Divide all terms by 5: x^2 = 16Square root both sides: x = -4 or +4By substitution into the original equation solutions are: (-4,8) and (4, -8)

What plus what equals -30?

Description : What plus what equals -30?

Last Answer : There are many possibilities.-30 + 0 = -30-31 + 1 =-30-32 + 2 = -301 + (-31) =-302 + (-32) = -3020 + (-50) = -3030 + (-60) = -31

What plus 220 equals 360?

Description : What plus 220 equals 360?

Last Answer : 140

What is the length of the tangent line from the point 8 2 to a point where it meets the circle x2 plus y2 -4x -8y -5 equals 0?

Description : What is the length of the tangent line from the point 8 2 to a point where it meets the circle x2 plus y2 -4x -8y -5 equals 0?

Last Answer : Equation of circle: x^2 +y^2 -4x -8y -5 = 0Completing the squares: (x-2)^2 +(y-4)^2 = 25 which is radiussquaredCenter of circle: (2, 4)Tangent line originates from: (8, ... angle triangleUsing Pythagoras theorem: distance^2 minus radius^2 = 15Therefore length of tangent line is the square root of 15

What property is shown by the following expression 12 plus 13 equals 13 plus 12?

Description : What property is shown by the following expression 12 plus 13 equals 13 plus 12?

Last Answer : The commutative property.

What plus another number equals 26?

Description : What plus another number equals 26?

Last Answer : How about 20 plus 6 equals 26 as one example

What Solve a divided by 5 plus 3 equals 8?

Description : What Solve a divided by 5 plus 3 equals 8?

Last Answer : a/5 + 3 = 8a/5 = 5a = 25

What is n plus the fraction 1 forth equals 9 twentieths?

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