payshencec21
19.12.2020 •
Mathematics
Can u help me solve for x
9 and 2x - 11 pretend there is a triangle in the middle
you get it correct and I will make a question for you that's 100 points
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Ответ:
2) The answer would be 29. You can answer this question by setting up the following equation: x+x+2+x+4=93. For instance, you know that x is an odd number (example lets say its the number 1). The next consecutive ODD number would have to be 3 (following the example given), which can be represented by x+2 (1+2=3). Now, knowing this, the third number can be represented by the expression x+4 (1+4=5, which makes sense as the order of the numbers would now be 1,3,5- consecutive odd numbers). Apply this to the question: x+x+2+x+4= 93 then becomes 3x+6 after combining like terms. This leaves you with 3x+6=93. Subtract 6 from both sides: 3x=87. Divide both sides by 3: x=29 (the smallest number as the other numbers would be 31 and 33 which you get by plugging in to x+2 and x+4). Finally, you can check your answer by adding all the numbers :-)
3) 8 notepads. The question states that Danielle had $35 and bought 1 magazine (worth $3) and some notepads (each worth $4). You can solve this question by setting up the following equation: 35= 3+4x. Subtract both sides by 3 and you get 32=4x. Divide both sides by 4: 8=x.
4) $20
5) $12
6) 4 candy bars
7) $8
8) 5 hours