Tutors Answer Your Questions about Linear Algebra (FREE)
Question 686822: In my math book the directions say ; Write an equation for a linear function f that has the given values. Example number 24 ; f(-2)=-2, f(4)=-8
I dont understand how to do this, could you explain it step by step & why? Thank you.
Click here to see answer by josmiceli(19441)   |
Question 692422: Solve the following inequality. Write the answer in interval notation. If the answer includes more than one interval write the intervals separated by the "union" symbol, U. If needed enter ∞ as "infinity".
19−∣∣7x+3∣∣≤1
Click here to see answer by lynnlo(4176) |
Question 692628: Hi ok so here's my problem: How many ounces of a 15% acid solution and a 40% acid solution must be mixed together to produce 30 ounces of a 33 1/3 acid soltuion?
I know how to do it once I have the equation.
The first equation I had was;
x+y=30
.15x+.40y=30(33 1/3) and then you use combination method but when I tried it I didn't get the right answer?
If you coudl just help me get the equation that would be great thanks so much!
Click here to see answer by josmiceli(19441) |
Question 693022:
Sarah is painting her room white and her living room blue. She spends a total of $132 on 5 cans of paint. The white paint costs $24 per can and the blue paint costs $28 per can. How many cans of paint did Sarah buy?
Click here to see answer by checkley79(3341) |
Question 693833: If I have a linear problem and the constraints are
X+y less or equal to 12
6x +3y less or equal 66
X+2y great or equal 20
I plug in and shade and the vertices are
0,10
0,12
5,8 would the answer have to be 0,12 because 5,8 is over 12?
Click here to see answer by vleith(2983) |
Question 697466: James score a total of 15 points during a basketball game. During the game, he made only free throws worth 1 point each and 3-point basket. he made a total of 7 baskets. How many free throws and how many 3-point basket did james make during the game? Write a system of equation you could use to find the amount of free throws and 3-point baskets James made during the game.
Click here to see answer by mananth(16946)  |
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