11/05/15

Given the sizes of two matrices A and B, determine the sizes of the product AB and the product BA, if the products are defined. Worth 8 points.
Given the sizes of two matrices A and B, determine the sizes of the product AB and the product BA, if the products are defined. Worth 8 points. (a) Ais4×4andBis4×4. (b) Ais2×1andBis1×1. (c)... more
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11/05/15

im so lost
The second derivative of function f(x) is sometimes written as f''(x). Find f''(x) given the function below.   f(x)=3x^3+5x^2+6x
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11/05/15

functions??
Given a differentiable function, what are the relationships among the slope of the tangent line, the instantaneous rate of change and the value of the derivative at a point?
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11/05/15

Need help with word problem
Father is mowing the lawn, it takes him 80 minutes. His daughter helps him and it takes them 60 minutes. How long would it take the daughter to do it by herself?
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11/05/15

Construct a system of two equations that has the solution (3, -5), prove to me that (3, -5) is the solution?
I'm taking my online math class and I do not know how to do this: Construct a system of two equations that has the solution (3, -5), prove to me that (3, -5) is the solution by either solving the... more
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11/04/15

A number is 12 less than its square. Find all such numbers.
Solve the problem. use the five-step problem-solving approach.  
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11/04/15

in the number $0.5495, express the 9 as a fraction of a cent
in the number $0.5495, express the 9 as a fraction of a cent
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11/04/15

how long would it take your brand new car to depreciate 40%? Assume that it depreciates at 15% a year (compounded annually), that is r =-0.15?
(if you lost% what would A=?
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11/04/15

How many additional minutes (a) will it take for the plans to cost the same
Tim is choosing between two cell phone plans that offer the same amount of free minutes. Cingular's plan charges $39.99 per month with additional at 0.45$ and Verizon's plan cost $44.99 a month... more
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11/03/15

-4=1+(2y-10)
Math help need to find the answer of y and figure out if one is in front of parantheses  
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11/03/15

One bus leaves a stop every 9 minutes. A second bus leaves the stop every 15 minute. If they both leave at 1:25pm what time wll they leave together
need help please
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11/03/15

True or False (Logic)
A negation must have the opposite truth value from the original statement. True or False
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11/01/15

How do I expand 12log(6rt(x)) ?
The six stands over the square root like the 3 does in a cube root.
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11/01/15

what a gradient of 1 in 14 means, in terms of vertical and horizontal distances?
what a gradient of 1 in 14 means, in terms of vertical and horizontal distances? 
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10/31/15

How many inches are missing from that customers piece of rope?
A customer wanted 24 feet of rope. The clerk at the hardware store used what she thought was a yardstick to measure the rope, but the yardstick was actually 2 inches too short. How many inches are... more
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10/29/15

tablespoon of horseradish
You purchase a 12 1/2 ounce jar of horseradish. if 1 tablespoon of horseradish weighs 0.03 pounds, then how many tablespoons of horseradish are in the jar?
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10/29/15

1/a+1/b=1/x show working
 Work problems
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10/19/15

bearing topic
a chord of length 12cm subtends an angle of 78.2 gegrees at the center of a circle. find the radius of the circle 
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10/19/15

i need an equation
this is a major grade and shes giving me a chance to redo this question i have a 66 in her class and progress reports come out this week and if im failing i cant go to homecoming so this is the... more
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10/19/15

If cos £ = -4/9 with £ in Quadrant II, find sin £.
If cos £ = -4/9 with £ in Quadrant II, find sin £.
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10/18/15

calculate the area of a regular decagon (10 sided polygon) with side lengths 9 feet and an apothem of 10 (square root) of 6 feet
Please help
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10/18/15

Simplify each Expression
(3x-4y)(3x+4y)
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10/18/15

Square Garden
A square garden has an area of 784 square feet. If a sprinkler (with a circular pattern) is placed in the center of the garden, what is the minimum radius of spray the sprinkler would need in order... more
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10/18/15

The sum of 3, and a number increased by 7, is -36
The sum of 3, and a number increased by 7, is -36
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10/17/15

What is the distance between -7 and -3.167 on a number line
It's a 7th grade ma question 
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