02/26/16

i don't understand this math problem?could someone help please
Factor the following trinomial.3r2 +8r-3  
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02/26/16

could someone help me finish this math problem? (i'm stuck)
3r2+8r-3   so i tried multiplying 3 and -3 to get -9 and i tried finding a number that equals to r (1) but i cant because all i get is 3x3 or 9x1    what do i do? i'm so confused 
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02/25/16

PLEASE HELP!! TEST PREP HELP!!
Stephanie sells 12 pretzels per hour. Robert sells 15 pretzels per hour. This week, Robert sold and additional 18 pretzels.Which of the following expressions represents of both people this week,... more
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02/25/16

PLEASE HELP!! TEST PREP!!
there is a graph that shows how the depth of a submarine increased as it dove beneath the ocean surface. Point x represents the time in seconds and point y represents the depth in meters. The graph... more
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02/25/16

i need to find out what x stands for -3x+6=18
I need to find out what x is. I am studying two step equations. I am in the seventh grade.
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02/25/16

Write an equation in two variables that shows the relationship between the time and distance: ice berg moves 2 meters every 3 hours
Don't understand the question.  Need to write equation and graph  
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02/25/16

Probablity
1. Write each as a set and then give the probability, of the following happening?a) From a full pack of picture cards (J,Q,K,A) an ace is dealt?b) From a set of a single die that a 4 is rolled?c)... more
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02/25/16

f(8) if f(x) = x + 11
i need help am so confused on how to do it  
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02/25/16

Evaluate each without a calculator
arctan (cos0)
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02/25/16

Find the exact value of each expression
Cos(inverse tan 2)
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02/25/16

Find the exact value of each expression
sin(inverse tan 3)
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02/25/16

Statistics Question
1. There are 23 people at a party. Explain what the probability is that any two of them share the same birthday. 6.3%2. A cold and flu study is looking at how two different medications work on sore... more
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02/25/16

How much money should be invested in stocks and bonds?
Suppose you received an unexpected inheritance of 36,000. You have decided to invest the money by placing some of the money in stocks and bonds. To diversify, you decided that five times the amount... more
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02/25/16

9^-x=30 using log properties.
From what I can guess, I can us the log property to bring the exponent -x in front of the 9 and make it -xLog9=Log3 (?)
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02/25/16

the diameter of a circle is \color{green}{12}12. What is its circumference?
whats the awnser
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02/25/16

at what rate is the supply changing?
Suppose the wholesale price of a certain brand of medium-sized eggs p (in dollars/carton) is related to the weekly supply x (in thousands of cartons) by the following equation. $ 625p^2 - x^2... more
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02/25/16

i need help grouping terms together "two at a time" please help me!
Factor the following polynomials by grouping the terms together two at a time.24x2+18x-4x-3
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02/25/16

Two mechanics worked on a car. The first mechanic charged $45 per hour, and the second mechanic charged $105 per hour. The mechanics worked for a combined total
Two mechanics worked on a car. The first mechanic charged $45 per hour, and the second mechanic charged $105 per hour. The mechanics worked for a combined total of 35 hours, and together they... more
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02/25/16

a girl walks 5000 meters in a hour. If the girl walks at the same speed for 4 hours, how many kilometers will she have walked
thanks
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02/25/16

Graphing question: If .030" = 51 and .040" = 49, How do I determine where 50 will land?
Length will be the y axis and the other numbers (51,49) is the hardness value for the x axis(measuring metal).  I am trying to make an Excel formula to figure this out.   I can plot this out on a... more
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02/25/16

how do I do this problem 2k+2+k+3+2k
2k+2+k+3+2k I just need to know how to do this problem please
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02/25/16

English Choose Question
Choose the correct answer and would you mind telling me the reason. I live in a large detached house ............. the outskirts of the city A) with        B) at         C) in      D) on
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02/24/16

Statistics Question: Cholesterol levels are normally distributed with a mean of 170 and a SD of 30.
Find the probability a randomly selected individual has a cholesterol level greater than 225.    The answer is = 0.0336 But i am not sure how to find this answer. 
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02/24/16

Midpoint of a segment
what is the y coordinate of the midpoint of the line segment which has end points (-1,1/3) and (-3,-1)
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02/24/16

Find the values of K so that the graph of the equation y = |x + k | -2 has an x intercept of 4
Plz help me x etc etc
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