3 years ago

This is my hw somebody please

Mathematics

1 answer:

jek_recluse [69]3 years ago

6 0

Answer:

4 because the edges are like vertices.

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This is a bit confusing for me but here we go.

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Step-by-step explanation:

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20 POINTS!!! Use the quadratic formula above to solve for h(t) = -4.9t^2 + 8t + 1 where h is the height of the ball in meters an

Elina [12.6K]

Answer:

Two solutions: -0.12 and 1.75.

Step-by-step explanation:

The quadratic formula is:

$\begin{array}{*{20}c} {\frac{{ - b \pm \sqrt {b^2 - 4ac} }}{{2a}}} \end{array}$ . Assuming that the x² term is a, the x term is b, and the constant is c, we can plug the values into the equation.

$\begin{array}{*{20}c}{\frac{{ - 8 \pm \sqrt {8^2 - 4\cdot-4.9\cdot1} }}{{2\cdot-4.9}}} \end{array}$

$\begin{array}{*{20}c}{\frac{{ - 8 \pm \sqrt {64 + 19.6} }}{{-9.8}}} \end{array}$

$\begin{array}{*{20}c}{\frac{{ - 8 \pm \sqrt {83.6} }}{{-9.8}}} \end{array}$

$\begin{array}{*{20}c}{\frac{{ - 8 \pm \sqrt {9.14} }}{{-9.8}}} \end{array}$

$\frac{-8 + 9.14}{-9.8} = -0.12$

$\frac{-8-9.14}{-9.8} =1.75$

Hope this helped!

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3 years ago

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AleksAgata [21]

Answer:

b and c

Step-by-step explanation:

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