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adrianaa34
14.07.2020 •
Mathematics
What is the justification for each step in solving the inequality? 3x+1/2<−x+4 Select from the drop-down menus to correctly justify each step.
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Ответ:
see below
Step-by-step explanation:
(3x+1)/2<−x+4
Multiply each side by 2 using the multiplication property of equality
3x+1 < -2x +8
Subtract 1 from each side using the subtraction property of equality
3x < -2x+7
Add 2x to each side using the addition property of equality
5x < 7
Divide each side by 5 using the division property of equality
x < 7/5
Ответ:
Multiplication property.
Subtraction property.
Addition property.
Division property.
Ответ:
If Brandi purchases x albums and y singles, then x albums cost $10x and y singles cost $y. She wants to spend no more than $25 total, then
Brandi wants to purchase at least 5 singles. This means that
Note that x and y are whole numbers.
There are three possibility:
x = 0, y = 25 (the total cost is 10·0 + 1·25 = 25 ≤ 25 and 25 singles is more than 5 singles);x = 1, y = 15 (the total cost is 10·1 + 1·15 = 25 ≤ 25 and 15 singles is more than 5 singles);x = 2, y = 5 (the total cost is 10·2 + 1·5 = 25 ≤ 25 and 5 singles is equal to minimal required number of singles).1) 0 albums and 25 singles;
2) 1 album and 15 singles;
3) 2 albums and 5 singles.