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\( 6 y+2<-4 \) and \( -4(2 y+3)<-68 \) Solution no solution Interval Notation

Ask by Hardy Cole. in the United States
Jan 23,2025

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Answer

There is no solution. In interval notation, the solution set is ∅.

Solution

To solve the system of inequalities: 1. **First Inequality:** \[ 6y + 2 < -4 \] - Subtract 2 from both sides: \[ 6y < -6 \] - Divide both sides by 6: \[ y < -1 \] 2. **Second Inequality:** \[ -4(2y + 3) < -68 \] - Divide both sides by -4 (remember to reverse the inequality sign when dividing by a negative number): \[ 2y + 3 > 17 \] - Subtract 3 from both sides: \[ 2y > 14 \] - Divide both sides by 2: \[ y > 7 \] **Combining the Results:** - The first inequality requires \( y < -1 \). - The second inequality requires \( y > 7 \). There is **no real number** that satisfies both conditions simultaneously. Therefore, the system has **no solution**. **Interval Notation:** Since there is no solution, the interval is represented by the empty set symbol: \[ \varnothing \] Answer: There is no solution. In interval notation, the solution set is  ∅.

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To solve the inequality \( 6y + 2 < -4 \), first, subtract 2 from both sides to get \( 6y < -6 \). Now, divide by 6, yielding \( y < -1 \). For the second inequality \( -4(2y + 3) < -68 \), distribute the -4 to get \( -8y - 12 < -68 \). By adding 12 to both sides, we have \( -8y < -56 \). Dividing by -8 (and flipping the inequality sign) gives us \( y > 7 \). The two solutions \( y < -1 \) and \( y > 7 \) do not overlap, which means there is no solution. Therefore, in interval notation, the answer is represented as \( (-\infty, -1) \cup (7, \infty) \). Remember, when dealing with inequalities, you can sometimes encounter situations where you're left with no overlapping solutions. It's like having two exclusive clubs; you can't be in both at the same time! Also, a fun tip: always check your final intervals against the original inequalities. A quick trial can confirm if they indeed satisfy the conditions laid out!

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