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Posts by alex

Total # Posts: 3,748

math
Here's my question: Fireworks are to be launched from a platform at the base of a hill. Using the top of the platform as the origin and taking some measurements, it was determined that the cross-section of the slope of one side of the hill is y=4x-12 If the path of the ...

math
Here's my question: Determine if each system has one, two, or no solutions. (Show your work - 3 marks each) a)y=2x^2-2x+1 and y=3x-5 b)y=x^2+3x-16 and y=-x^2-8x-18 Here's my work on the question: a) x=(-b plus/minus sign (square root b^2-4ac)/(2a) x=(--2 plus/minus ...

math
Determine if each system has one, two, or no solutions. (Show your work - 3 marks each) a)y=2x^2-2x+1 and y=3x-5 b)y=x^2+3x-16 and y=-x^2-8x-18

math
Fireworks are to be launched from a platform at the base of a hill. Using the top of the platform as the origin and taking some measurements, it was determined that the cross-section of the slope of one side of the hill is y=4x-12 If the path of the fireworks is y=-x^2+15x, ...

math
Fireworks are to be launched from a platform at the base of a hill. Using the top of the platform as the origin and taking some measurements, it was determined that the cross-section of the slope of one side of the hill is y=4x-12 If the path of the fireworks is y=-x^2+15x, ...

math
So I use the quadratic formula?

math
Determine if each system has one, two, or no solutions. (Show your work - 3 marks each) a)y=2x^2-2x+1 and y=3x-5 b)y=x^2+3x-16 and y=-x^2-8x-18

math
Determine the value of k in y=kx^2-5x+2 that will result in the intersection of the line y=-3x+4 with the quadratic at a) two points (1 mark) b) one points (1 mark) c) no point (1 mark)

math
Determine the value of k in y=kx^2-5x+2 that will result in the intersection of the line y=-3x+4 with the quadratic at a) two points (1 mark) b) one points (1 mark) c) no point (1 mark)

math
For what value of b will the line y=-2x+b be tangent to the parabola y=3x^2+4x-1 ? (Show your work - 2 marks)

english
expletive

english
Choose the correct sentence pattern for the sentence below. There is good reason to be thankful. E-V-S S-V-DO-OC S-LV-PA S-V-DO S-V-IO-DO S-V S-LV-PN Question pattern

math
For what value of b will the line y=-2x+b be tangent to the parabola y=3x^2+4x-1 ? (Show your work - 2 marks)

math
The UV index on a sunny day can be modeled by the function f(x)=-0.15(x-13)^2+7.6 where x represents the time of day on a 24-h clock and f(x) represents the UV index. At what time(s) was the UV index 7? (2 marks)

physics
A 1100·kg elevator is attached to a cable whose tension is 10900·N. What is the magnitude of the elevator's acceleration?

math
Solve the system of equations by elimination. (2 marks) y=2x^2-2x-3 y=-x^2-2x-3

math
A square storage area measures 10 m on a side. By how much must each side be shortened to decrease this area to less than half the original area? (3 marks - show your work)

math
A baseball player hits a high pop-up with an initial upward velocity of 30 m/s, 1.4 m above the ground. The height, h, in metres, of the ball t seconds after being hit is modelled by the function h(t) = -4t^2+30t+1.4. How long does a player on the opposing team have to get ...

Algebra 1
No

math
Fireworks are to be launched from a platform at the base of a hill. Using the top of the platform as the origin and taking some measurements, it was determined that the cross-section of the slope of one side of the hill is y=4x-12 If the path of the fireworks is y=-x^2+15x, ...

math
Determine the value of k in y=kx^2-5x+2 hat will result in the intersection of the line y=-3x+4 with the quadratic at a) two points (1 mark) b) one points (1 mark) c) no point (1 mark)

math
Solve the system of equations by elimination. (2 marks) y=2x^2-2x-3 y=-x^2-2x-3

math
Four corners are cut from a rectangular piece of cardboard that measures 5 ft by 3 ft. The cuts are x feet from the corners, as shown in the figure below. After the cuts are made, the sides of the rectangle are folded to form an open box. The area of the bottom of the box is ...

Science
100% right thanks

math
The graph of a reciprocal function of the form f(x)=1/ax+b where a is not equal to 0 and b is not equal to 0. Which is the equation of the original function f (x)? a)y=5.25x-2 b)y=-5.25x+2 c)y=-5.25x-2 d)y=5.25x+2

math
Four corners are cut from a rectangular piece of cardboard that measures 5 ft by 3 ft. The cuts are x feet from the corners, as shown in the figure below. After the cuts are made, the sides of the rectangle are folded to form an open box. The area of the bottom of the box is ...

Math
I have figured out x to be 2 for this system of equations but now I need help on determining the solution of the equations which are y=4x and y=2x^2. Can you please help me!

Math
Determine the value of k in y=kx^2-5x+2 that will result in the intersection of the line y=-3x+4 with the quadratic at a) two points (1 mark) b) one points (1 mark) c) no point (1 mark)

Math
For what value of b will the line y=-2x+b be tangent to the parabola y=3x^2+4x-1? Show work-2 marks

math
The line y=16x intersects the quadratic function y=x^2 at two points. What are the coordinates of the two points of intersection?

math
Solve the following system of equations: y=4x y=2x^2

math
What are the solutions for the following system of equations? y=8x+7 y=-x^2-5x+7

math
The line y=9x-4 intersects the quadratic function y=x^2+7x at one point. What are the coordinates of the point of intersection?

Math
A 120-ft long playground is just 15-in on the scale drawing.What is the scale on the scale drawing? How would you solve this question?

Economics
5. (paradox of) VALUE = (blank) + (blank). 16. (Blank) is a situation when production cannot reach its full potential because resources are available, but not being used. These are the only two questions that I can't figure out on my study guide. Help? Please and thank you...

Math
The solution set to the inequality:-2x^2+8x-6>0 is ?

Math
A scientist is monitoring the temperature of a holding tank containing fish to be released into a river. In one 12-h period, the highest temperature was 10.4°C and the lowest temperature was 7.6°C. Write an absolute value equation that can be used to report the highest...

Math
The velocity of an object is given by the formula v=25t-80, where the time is expressed in seconds and the velocity is expressed in feet per second. Find the times when the magnitude of the velocity is equal to 60 ft/s. (3 marks)

Math
A scientist is monitoring the temperature of a holding tank containing fish to be released into a river. In one 12-h period, the highest temperature was 10.4°C and the lowest temperature was 7.6°C. Write an absolute value equation that can be used to report the highest...

physics
A golf ball (m = 35.4 g) is struck a blow that makes an angle of 61.8 ◦ with the horizontal. The drive lands 176 m away on a flat fairway. The acceleration of gravity is 9.8 m/s 2 . If the golf club and ball are in contact for 3.01 ms, what is the average force of impact...

Math
I have the ratio for this question but I need help with finding the value of ratio using the ratio I came up with: ratio of V/SA=x/(100+2x) Here's the question: d) Find the value of the ratio for the box for each value of x. (1 mark each) i) 10 cm ii) 20 cm iii) 30 cm

Math
A square sheet of cardboard 100 cm by 100 cm is to have corners of side length x cut out. These cutouts will create flaps that can be folded up to form a box with no lid. The length and width of the base of the box are given by the expression (100 – 2x), and the height of...

Math
Thanks,Reiny for all your help with my math!

Math
A square sheet of cardboard 100 cm by 100 cm is to have corners of side length x cut out. These cutouts will create flaps that can be folded up to form a box with no lid. The length and width of the base of the box are given by the expression (100 – 2x), and the height of...

Math
Would these simplified expressions by equivalent to these expressions: i)f(x)=-3(x+2)^2 ii)f(x)=x^2-x-2 / 3x^2+4x+1 Simplified expressions: i)-3x^2-13x-13 ii)(x-2)(3x+1) Please help me!

Math
Simplify the expressions in each pair. (2 marks each) (Show your work) (x^2-2x)/(x+1)x (x^2-1)/(x^2+x-6) My work on simplifying the expressions x(x-2)/x+1 x (x+1)(x-1)/(x+3)(x+2) If I've gone wrong please help me understand where I went wrong and help me get the correct ...

Math
Simplify each expression and state any non-permissible values. (4 marks - show your work) 4x-1/x^2+7x+12 divided by 2x-1/x^2+x-12 My work on simplifying the expressions: 4x-1/(x+3)(x+4)divided by 2x-1/(x+4)(x-3) If I've gone wrong please help me understand where I went ...

Math
Simplify the expressions in each pair. (2 marks each) (Show your work) (x^2-2x)/(x+1)x (x^2-1)/(x^2+x-6) My work on simplifying the expressions x(x-2)/x+1 x (x+1)(x-1)/(x+3)(x+2) If I've gone wrong please help me understand where I went wrong and help me get the correct ...

Math
So for these simplified functions would they be equivalent to these functions: Is -3x^2-13x-13 equivalent to f(x)=-3(x+2)^2 Is [(x-2)(x+1)]/[3x+1)(x+1] equivalent to f(x)=(x^2-x-2)/(3x^2+4x+1)

Math
Damon so are the simplified versions of the functions equivalent to their respective functions?

Math
My work on simplifying this function: g(x)=(-3x^2-13x-13) g(x)=-3x^2-13x-13 (13x-13=x) g(x)=-3x^2-x Can someone help with the simplifying the function if I have got it wrong and also can someone tell me of it's equivalent to this function:f(x)=-3(x+2)^2-(x+1) Also I have ...

Math
Simplify the expressions in each pair. (2 marks each) (Show your work) i) (x^2-x-2)/(x+1),g(x)=(x-2) My work on simplifying the functions: (x-1)(x+2)/(1) (x-1)(x+2) ii) (x^2-x-12)/(x+3), g(x)=(x^2-6x+8)/(x-2) My work on simplifying the functions: (x-2)(x+6)/(3) (x-4) Can you ...

Math
Simplify the expressions in each pair. (2 marks each) (Show your work) i)f(x)=(x^2-x-2)/(x+1), g(x)=(x-2) ii)f(x)=(x^2-x-12)/(x+3), g(x)=(x^2-6x+8)/(x-2)

Math
Simplify each expression and state any non-permissible values. (4 marks - show your work) (4x-1)/(x^2+7x+12)divided by (2x-1)/(x^2+x-12)

Math
Yes I am,and I'm so sorry for reposting it but thanks for helping me Reiny.

Math
Simplify each expression and state any non-permissible values. (4 marks - show your work) (x^2-2x)/(x+1) x (x^2-1)/(x^2+x-6)

Math
Simplify the expressions in each pair. (2 marks each) (Show your work) i)f(x)=(x^2)-(x)-2/(x+1),g(x)=(x-2) ii) f(x)=(x^2)-(x)-12/(x+3), g(x)=(x^2)-(6x)+8/(x-2)

Math
Have I done the predicting part of assignment, now I need help with the simplifying part of the assignment. Can you please help me? Here are the functions: g(x)=(-3x^2)-(13x)-13 g(x)=(x-1)/(3x+1)

Math
Solve and check. ( 3 marks) 5/(x-1) + 2/(x+1)=-6 Here's my work on it: 5/(x-1)+2/(x+1)=? 5/(-3/2-1)+2/(-3/2+1)=-6 Can you show how I would have found x in this situation and also if I went wrong anywhere.

Math
Thanks for your help,Damon

Math
Can you please verify my simplified expressions and point out where I went out wrong if I made mistakes: (3x+1)/(2x^2-2) + (2x+2)/(2x^2-8x+6)=5x+1/2(x+1)(x-3)

Math
Solve and check. ( 3 marks) (5)/(x-1) + (2)/(x+1)=-6

Math
Solve and check. ( 3 marks) (5)/(x-1)+(2)/(x+1)=-6 I need the help!

Math
Simplify each expression and state any non-permissible values. (5 marks - show your work) (3x+1)/(2x^2-2) + (2x+2)/(2x^2-8x+6) Please help me!

Math
i) Predict whether the functions in each pair are equivalent by testing three different values of x. (3 marks each - show your work) ii) Determine whether the functions in each pair are equivalent by simplifying the expression on the right side. (2 marks each = show your work...

Math
Determine if the function f(x) is the simplified form of g(x). If it is, state the non-permissible values. If it is not, determine the corrected simplified form, including the non-permissible values. (2 marks) - Show your work g(x)=(2x^2-7x+3)/(x-3) f(x)=(2x+1)

Math
Determine if the function f(x) is the simplified form of g(x). If it is, state the non-permissible values. If it is not, determine the corrected simplified form, including the non-permissible values. (2 marks - show your work) g(x)=(6x^2)+(x-12)/(2x+3),f(x)=3x-4

Math
Thanks,Reiny

Math
Simplify each expression and state any non-permissible values. (4 marks - show your work) x^2-2x/(x+1) x x^2-1/(x^2+x-6) Please help me as I'm on a deadline to finish this course

Math
Simplify each expression and state any non-permissible values. ( 3 marks - show your work) x/(x^2-3x-4) - 4/(x+1)

Math
Simplify each expression and state any non-permissible values. ( 3 marks - show your work) x/x^2-3x-4 - 4/x+1

Math
Simplify each expression and state any non-permissible values. (4 marks - show your work) x^2-2x/x+1 x x^2-1/x^2+x-6

Math
Determine if the function f(x) is the simplified form of g(x). If it is, state the non-permissible values. If it is not, determine the corrected simplified form, including the non-permissible values. (2 marks) - Show your work g(x)=2x^2-7x+3/x-3, f(x)=2x+1

Math
Determine if the function f(x) is the simplified form of g(x). If it is, state the non-permissible values. If it is not, determine the corrected simplified form, including the non-permissible values. (2 marks - show your work) g(x)=6x^2+x-12/2x+3,f(x)=3x-4

Math
i) Predict whether the functions in each pair are equivalent by testing three different values of x. (3 marks each - show your work) ii) Determine whether the functions in each pair are equivalent by simplifying the expression on the right side. (2 marks each = show your work...

Math
Solve and check. ( 3 marks) 5/(x-1)+2/(x+1)=-6

Math
Simplify each expression and state any non-permissible values. ( 3 marks - show your work) x/(x^2-3x-4)-4/(x+1) Please help me!

Science
To lift an object weighing 21,000 N, how much force is needed on a piston with an area of 0.060 m2 if the platform being lifted has an area of 3.0 m2 ? If the weight is 21,000 N which is also a force and to find Buoyancy force then 3.0 m2 + .06 m2 = 3.6 m2 21,000/3.6 Im pretty...

Math
Simplify each expression and state any non-permissible values. ( 3 marks - show your work) x divided by x^2-3x-4 subtracted by 4 divided by x +1

Math
Solve: 1 + 2x/x+4=3/x-1

Math
Solve: 1+2x/x+4=3/x-1

Math
Simplify each expression and state any non-permissible values. (5 marks - show your work) 3x+1/2x^2-2 + 2x+2/2x^2-8x+6 is the expression Can you help please?

Math
Simplify each expression and state any non-permissible values. ( 3 marks - show your work) x/ x^2-3x-4 - 4/x+1

chemistry
dissolved oxygen in aquatic systems is important for the survival of freshwater fish and they require a minimum of 5 parts per million(ppm) of dissolved oxygen (02) in a stream lake to survive. although this amount seems small, how many oxygen molecules are in a litre of water...

Science
A mass extinction is a catastrophic event because _______?

Math
In a triathlon, a contestant swims 5 km, cycles 30 km, and then runs 20 km. In general, a contestant runs at an average speed of x, swimsat an average speed of x/5, and cycles at an average speed of 5x, where x is in kilometres per hour. a) Determine an expression for the ...

Math
The velocity of an object is given by the formula v=25t-80, where the time is expressed in seconds and the velocity is expressed in feet per second. Find the times when the magnitude of the velocity is equal to 60 ft/s

Math
The area of a tennis court can be represented approximately by the function A(x) = 10x2 + 3x - 1, and its length can be represented by l(x) = 5x - 1, where x is a distance, in metres. a) Write and simplify a function, w(x), to represent the width of a tennis court. (2 marks) b...

Math
A scientist is monitoring the temperature of a holding tank containing fish to be released into a river. In one 12-h period, the highest temperature was 10.4°C and the lowest temperature was 7.6°C. Write an absolute value equation that can be used to report the highest...

physics
The movement of an object or a point mass at a constant speed around a circle that has a fixed radius is called uniform

Math
Simplify each expression and state any non-permissible values. (4 marks - show your work) 4x-1 divided by x^2+7x+12 divided by 2x-1 divided by x^2 +x- 12 is the expression Help me please and thank you.

Math
Simplify each expression and state any non-permissible values. (4 marks - show your work) x^2-2x divided by x+1 multiplied by x^2-1 divided by x^2+x-6 is the expression

This site is the best. Thanks a lot :)
Thanks a lot for everything. Have a great Holidays :)

Math
A museum calculates the rate for groups using the equationC=4P+8,where P is the number of people and C is the total cost in dollars. If the cost for a group is $60, how many people are in the group?

algebra
1) log sub 8 2 + log sub 8 4x^2 = 1 2) ln 2 - ln (3x + 2) = 1 3) ln (x - 3) - ln (x - 5) = ln 5

Math
Courtney and Kurtis are planning to travel 160 km in a car by travelling at x kilometres per hour for the first half of the distance, and then increasing their speed by 10 km/h to finish the distance. Which is the correct simplified expression for the total time of the trip? a...

Science~!
Pacman is 100% right

Math
The non-permissible values for the expression -9x+8 divided by -9x^2-55x+56 are? a) x does not equal -8/9 b)x does not equal 8 c) x does not equal 8/9 and x does not equal -7 d) there are no restrictions

Math
Express the product, x^2 + 4x divided by 2x^2+13x+15 multiplied by x+5 divided by x^2 - 16 ? a)-1/2x+3 b)x/(2x-16)(x+4) c)(x^2+4x)(x+5) / (2x^2+13x+15)(x^2-16) d)x / (2x+3)(x-4)

Math
When fully simplified, ignoring non-permissible values, 12x^12/4x^3 divided by x^8/24x^6? a)72x^3 b)1/72x^7 c)1/72x^3 d)72x^7

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