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Radda [10]
3 years ago
5

The motion of a ball scooped by a field hockey player can be modeled by h=-16t^2+40t, where t is the time in seconds and h is th

e height of the ball. When will the ball reach 25 feet?
Solve with quadratic formula or completing the square or factoring, thank you!!
Mathematics
1 answer:
tester [92]3 years ago
5 0
25 = -16t^2 + 40t

16t^2 - 40t  + 25 = 0

(4t - 5)(4t - 5) = 0

4t - 5 = 0

t = 5/4 = 1.25 seconds.
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Explanation:

Angles VMU and GMH are congruent by the Vertical Angles Theorem. Given that angles UVM and GHM are congruent because they are both right angles, we now have two pairs of corresponding angles. Also given that sides HM and VM are congruent, we now have two corresponding pairs of congruent angles and a pair of congruent sides.Therefore, your best option is the ASA postulate, which states that if two angles and the included side of one triangle are congruent to two angles and the included side of another triangle, then the two triangles are congruent. Therefore, we have a corresponding angle, a corresponding side, and another corresponding angle in triangle GHM, which is congruent to its corresponding angle, a corresponding side, and another corresponding angle in triangle UVM.
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3 years ago
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Answer:

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3. \frac{1}{12}

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6. \frac{1}{15}

Step-by-step explanation:

1. 4÷ \frac{1}{8} = 4*8=32

2. 6÷\frac{1}{4} = 6*4=24

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4. \frac{1}{2}÷4=\frac{1}{2} *\frac{1}{4} =\frac{1}{8}

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Answer:

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Step-by-step explanation:


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