Mathematics, 29.01.2020 14:44 Alan0201

Britney throws an object into the air with an initial vertical velocity of 27 feet per second, from a platform that is 10 feet above the ground.
how long will it take the object to hit the ground?
1 second
2 seconds
3 seconds
4 seconds

Answers: 3

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Answers

Y = yo + Vot - (gt^2)/2

y = 10 + 27t - 16.087t^2 [I used g = 32.174 ft/s^2]

You can find y with the quadratic formula or probe with the different times given.

I tried with t = 2 s and found

y = 10 + 27(2) - 16.087 (4) = 10 + 54 - 64.348 = -0.348

Then that is the answer, t = 2s.

Answer from: Quest

ratios represent a pattern or relationship that can be scaled.

equivalent ratios are pairs of ratios that represent the same relationship between quantities, and can be generated by multiplying or dividing both quantities in the ratio by the same factor.

in this lesson, students will use double number lines and ratio reasoning to solve ratio problems. by partitioning double number lines into proportionate intervals, students will build an understanding of equivalent ratio relationships as those that are generated by multiplying or dividing two related quantities by the same number. this lesson will build upon students' prior understanding of multiplicative comparisons, number line reasoning and equivalent fractions (while highlighting the difference between equivalent fractions and equivalent ratios); and will build toward future work in this unit on building ratio tables, and work in future grades in proportionality, scaling, and expressing and graphing linear functions.

step-by-step explanation:

ratios represent a pattern or relationship that can be scaled.

equivalent ratios are pairs of ratios that represent the same relationship between quantities, and can be generated by multiplying or dividing both quantities in the ratio by the same factor.

Answer from: Quest

a reflection across the x axis and a 90 degree rotation left and right.

Easy easy 4th grade math for 20 points waaaaait 20 yes 20 ! and only 1 question answer

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