7,188 Answered Questions for the topic Math Help

Math Help Math Mathematics

07/06/18

Math question

g(x)=-2x^2-20x-46   1. What is the function's maximum value?   2. Where does the function's maximum value occur?    Thank you for your help! 

07/05/18

Hydrogen Peroxide: C1=100%, V1=50 ml, C2=2%, V2=???

Solve the following problems. (You need not compute the amount of diluent)

07/05/18

NaOH (sodium hydroxide) C1=30%, V1=500 ml, C2=5%, V2=???

Solve the following problems. (You need not compute the amount of diluent)

07/05/18

HCL (hydrochloric acid): C1=100%, V1=20ml, C2=1%, V2=???

Solve the following problems and determine the amount of diluent.

07/05/18

Formalin: C1=10%, V1=???, C2= 2%, V2= 12L

Solve the following problems and determine the amount of diluent.

07/05/18

Isopropyl alcohol C1 = 100%, V1 = ? , C2 =70%, V2= 2.5 L

Solve the following problems and determine the amount of diluent.

Prepare 1000 mL of 1% HCL using the stock solution of 70% HCL. How much of the stock solution and how much water is required?

Determine the volume of stock solution needed and the volume of diluent

Prepare 30 L of formalin from a 100% stock solution. How much formalin is needed to make a 5% solutions?

Determine the volume of stock solution needed and the volume of diluent
Math Help Math Algebra 2 Algebra

07/04/18

math question

an = (-1)^n/5n+4, n=1,2,3 . . .   (the n is supposed to go under the a but i don't know how to put it that way through typing)
Math Help

07/04/18

i dont know how to do any of this :Given: 25x2 +49 = -70x A) Find the value of the discriminant. B) State the number and type of roots/solutions/zeros. {

I dont know how to do this at all. I just need the answer. Given: 25x2 +49 = -70xA) Find the value of the discriminant.B) State the number and type of roots/solutions/zeros. {2 real, 2 imaginary/ 1... more
Math Help

07/04/18

someone help!!: x2 - 8x + 5 = 0 A) Find the value of the discriminant. B) State the number and type of roots/solution/zeros. {2 real, 2 imaginary, or 1 real}

I need help with the question so badly!!!! 10 ptsGiven: x2 - 8x + 5 = 0A) Find the value of the discriminant.B) State the number and type of roots/solution/zeros. {2 real, 2 imaginary, or 1... more
Math Help

07/04/18

combinations and permutations

Tom and Jerry are hoping to be selected from their class of 27 as president and vice-president of the Social Committee (they just want the positions, but don't care which of the two is the... more

07/04/18

I need help with my math homework

Problem 1: Write an equation in point-slope form for the line that has a slope of 1/3 and passes through (-2,8) Problem 2: Write an equation in slope intercept form for the line that passes... more
Math Help Math Algebra

07/03/18

Identify all restrictions on the variable x in this context

A high-speed passenger train in Europe completes an 800 km trip in 3 hours. The train travels the first 600 km at an average speed that was 100 km/h faster than the last 200 km of the trip. If x... more
Math Help

07/03/18

A hawk, flying at a height of 50 feet, spots a rat on the ground. If he dives down to catch the rat at a speed of 45 feet per second, how long will it take him

to catch the rat?   The two formulas that you need are:h = -16t2 + sh = -16t2 +vt + s The two formulas that you need are: h = -16t2 + s h = -16t2 +vt + s
Math Help Math

07/03/18

I need help with interpreting a linear equation

A one year old bluegill fish is 3 inches long, while a four year old bluegill fish is 6.6 inches long. Assuming growth rate can be approximated by a linear equation, Write an equation in... more
Math Help

07/03/18

the difference between -12 and a number, x, is 20

i keep getting -44 when trying to solve for x, but that's incorect  am i doing something wrong does the equation have no solution
Math Help Math

07/03/18

Help with writing linear equations

Question 1: Write an equation in slope intercept form of the line through (4,2) with the slope of 1/2.   Question 2: Write an equation in Point slope form for the line that passes through (2,-5)... more
Math Help Math

07/03/18

Writing equations in standard form

#1:-3y = 9x + 12    #2: y - 3 = -2 (x+1)  
Math Help Math

07/03/18

Math Problem - need help

The formula A = P(1+r)^t represents the amount of money A in an account after t years, where P is the amount initially deposited and r is the interest rate. Sunyi currently has $1839.79 in an... more
Math Help Math

07/02/18

Help with math please

The formula A = P(1+r) represents the amount of money A in an account after 1 year, where P is the amount initially deposited and r is the intrest rate. Note that the interest rate is written as a... more
Math Help

07/02/18

counting question

A password is required to log into a system that only recognizes numbers and letters of the alphabet (not case sensitive). You want to create a password using 4 numbers or letters, but cannot reuse... more
Math Help

07/02/18

counting question

Sam is the captain of an academic team in the class. A teacher teacher will choose 6 of the 29 students in the class to be on an academic team.How many ways can 6 students be chosen as a team from... more
Math Help

07/02/18

I need help with my math homework.

Help me find the solution-   Problem #1 - The formula A = LW finds the area of a rectangle by multiplying the length of one side and the width of the adjacent side. Solve the formula for length... more
Math Help Math Algebra 2 Tutoring

07/02/18

A chemical company makes two brands of antifreeze. The first brand is 20% pure antifreeze and the second brand is 70% pure antifreeze. In order to obtain 180 -

gallons of a mixture that contains 40% pure antifreeze, how many gallons of each brand of antifreeze must be used?

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