3 years ago

Simplify 3(y-1)+7 completely

Mathematics

1 answer:

SVEN [57.7K]3 years ago

4 0

Answer:

3y + 4

Step-by-step explanation:

3(y-1) +7

3y -3 +7

3y +4

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3 years ago

Solve each equation using the quadratic formula. Find the exact solutions.<br><br> 6n^2 + 4n - 11

Paul [167]

Answer:

$\frac{-2\pm\sqrt{70}}{6}}$

Step-by-step explanation:

The quadratic formula is $\frac{-b\pm\sqrt{b^2-4ac}}{2a}$ , where a, b, and c are values in the quadratic ax^2 + bx + c. Plug in the values to get $\frac{-4\pm\sqrt{4^2-4(6)(-11)}}{2\cdot6} \implies \frac{-4\pm\sqrt{16+264}}{12} \implies \frac{-4\pm2\sqrt{70}}{12} = \boxed{\frac{-2\pm\sqrt{70}}{6}}$