Select all of the equations below that are equivalent to:−19=−25kUse properties of equality.Multi-select Choices:(A) 76=−4⋅−25k(B) −54=−25k⋅3(C) −38=2⋅−25k(D) −2⋅−19=50k
Q. Select all of the equations below that are equivalent to:−19=−25kUse properties of equality.Multi-select Choices:(A) 76=−4⋅−25k(B) −54=−25k⋅3(C) −38=2⋅−25k(D) −2⋅−19=50k
Check Multiplication by −4: To determine if an equation is equivalent to −19=−25k, we can perform operations that maintain equality. For choice (A), we check if multiplying both sides of the original equation by −4 gives us 76=−4⋅−25k.Calculation: −19×(−4)=−25k×(−4)76=100kThis is not equivalent to the original equation.
Check Multiplication by 3: For choice (B), we check if multiplying the original equation by 3 gives us −54=−25k⋅3.Calculation: −19×3=−25k×3−57=−75kThis is not equivalent to the original equation.
Check Multiplication by 2: For choice (C), we check if multiplying the original equation by 2 gives us −38=2⋅−25k. Calculation: −19×2=−25k×2 −38=−50k This is equivalent to the original equation because both sides are multiplied by the same factor, 2.
Check Multiplication by −2: For choice (D), we check if multiplying −19 by −2 and −25k by 2 gives us an equivalent equation.Calculation: −19×(−2)=−25k×238=50kThis is equivalent to the original equation because multiplying both sides by −2 is the same as multiplying both sides by 2 (since −2×−1=2).