Tutor profile: Ashley B.
Fractions always confuse me but I really don't know what to do with mixed fractions, can you help me solve 2 8/17 * 5 1/5?
The easiest way to start on mixed fraction problems is to convert the mixed fractions back into improper fractions. For this problem you would multiply 2*17 which is 34 and then add 8. The improper fraction would then be 42/17. For 5 1/5 you would do the same by multiplying 5*5 and adding 1. The improper fraction would be 26/5. Then we have just have to multiply the numerators together and multiply the denominators together. 42/17 * 26/5 = 1092/85 Most teachers would want you to convert this improper fraction back into a mixed fraction, so just see how many times 85 will fit into 1092, which is 12. Then the remainder would be 72/85. So the answer would be 12 72/85.
I'm having a hard time remembering the stages of mitosis and what happens in each stage. Is there any helpful but easy ways to memorize this stuff?
Memorizing all the information about mitosis can be difficult and sometimes it just takes a whole lot of repeating and practicing. What helped me when I first learned the stages was mentally pairing the first letter of each phase with what happens during the stage. Interphase- Intact (the chromosomes have duplicated but the copies are still attached, thus they are still intact) Prophase- Preparing (everything is starting to form in this stage- chromosomes condensing and spindle forming, but nothing big has happened yet) Prometaphase- Party (something big is starting to happen- nuclear membrane breaking apart, but also the spindle is starting to interact with the chromosomes just as people interact at parties) Metaphase- Middle (the chromosomes are lining up in the middle of the spindle) Anaphase- Angry (the chromosomes are separating to opposite sides of the spindle, so they must be angry at each other) Telophase- Training (new nuclear membranes form around the two sets of chromosomes and they are starting to split apart so they are training to become their very own cell Cytokinesis- Cell splitting (the cells fully split into the two daughter cells)
This is the problem I'm having trouble with on my homework: 6x+3x(x-2)=27 Solve for x. After factoring at the end of the problem I keep getting that x=3 or x=-1 but I know that x can't be -1. I have no idea what I'm doing wrong and am getting frustrated, please help!
In this problem there should be no factoring. When done correctly the answers should be x=3 and x=-3 as shown by the work below: 6x+3x(x-2)=27 Start by distributing the 3x through the parentheses. 6x + 3x^2 - 6x= 27 The 6x and -6x should cancel out. 3x^2 = 27 Divide by 3 to get the x alone. x^2 = 9 Then square root both sides to eliminate the exponent x=3 and x=-3 You might have started the problem by doing the wrong order of operations and adding 3x and 6x before distributing the parentheses, which would require you to factor at the end of the problem. Remembering the order of doing problems is hard so don't stress and keep practicing!
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