Mathematics

What are the coordinates of the x-intercepts of the graph of y = 2x2 + 6x – 20

Please help!-Y = x^2 + 6x - 20 is a parabola opening up. It is in standard form, y = ax^2 + bx + c A quick peek at the discriminant, b^2 - 4ac, 6^2 - 4(2)(- 20) = 36 + 160 = 196, lets us know it ha

GCSE MATHS HELP PLEASE!! ASAP

Can you help me ans this question..... A car travels for x hours at a speed of (x+2)km/h. if the distance travelled is 15km, write an equation for x and solve it to find the speed of the car. While

I need to find out the equations for these problems

A puppy pen is 1 foot longer than twice its width. John wants to increase the length and width by 5 feet each to enlarge the area by 90 square feet. What will be the area of the new pen? Keesha has 1

I need help on an algebra problem

I have to solve the equation then check my problem. I have no idea how to do this could someone explain how? (Show work) I have about 50 of these problems for homework... One of them is 3/4n + 16 = 2

Is it a bad idea to take 2 math classes at the same time

College. no major. Calculus 2 -5 credits Statistics -4 credits Calculus 2 is supposedly harder than Calc 1, Calc 3, Calc 4, Calc 5 ...multivariable combined>?-Hi. As a Math Major myself, I do no

What is the WHOLE decimal for the fraction 1/21

PLEASE HURRY Extra: If possible please try 1/23 too.-......0.0476190476190... .....-------------------------- 23 | 1.0000000000000 Use a calculator or long division as Ive displayed a portion of abo

How would you solve 16+y=3

To solve for a variable in any equation you want to do the opposite of PEMDAS, which would be SADMEP (Subtraction, Addition, Division, Multiplication, Exponents, Parenthesis). To use SADMEP, you just

Need help with these geometry questions

1) the volume of a right circular cylinder is 586 cubic centimeters and the height of the cylinder is 4.6 centimeters. what is the radius of the base to the nearest tenth? 2)a circular cylinder has a

Explain each step if you were asked to solve 4 - 2x < 18

I stink at algebra which is why Im in remedial courses at community college.This has me stumped.Ive been looking through the instructions and still have no clue.Any help??-subtract 4 from each side -

What comes after calculus 3 and differential equations and linear algebra

Not counting statistics and probability.-Information theory and signal processing, Mathematical physics, Dynamical systems and differential equations, Geometry and topology, among others-depends upon

Solve 4=(5/2a+3) times a

Please show complete work-Is it (5/2)a+3 or 5/(2a+3)? _______________________________________… Thats not what Im asking. Im asking if its 4=(5/2)a+3 or 4=[5/(2a+3)]? With the way its written now, I c

How would I do this math problem

Draw a right triangle to scale, with one leg 8 cm long and the adjacent acute angle 34° . Draw on paper with ruler and protractor or on the computer with a program such as The Geometer’s Sketchpad.a.M

Area of triangle? Help

What is the area of △ABC ? http://www.flickr.com/photos/68592326@N08/6232884165/in/photostream pls help. Thank you.-The smaller triangle with the 60degree angle we know is a right triangle, so it is

I need help solving college algebra word problem

A one-cup serving of spaghetti with meatballs contains 260 calories and 32 grams of carbohydrates.A one-cup serving of chopped iceberg lettuce contains 5 calories and 1 gram of carbohydrates.Determine

Finding an equation of the plane: normal vectors

For the following problem: Find an equation of the plane that passes through the points A(2,1,1), B(-1,-1,10) and C(1,3,-4). I found the normal vector to be So then my equation would turn out to be: