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GrogVix [38]
3 years ago
13

A parachutist's speed during a free fall reaches

Mathematics
2 answers:
Ray Of Light [21]3 years ago
8 0
"Dimensional analysis" is the primary way to make conversions between any units.  Some have trouble because they fail to make it an important point to label units, but labeling units correctly makes tracking and making any conversion very simple...The process and thinking is that you want to cancel out units that you don't need in the solutions...

(198ft/s)(12in/ft)(2.54cm/in)(m/100cm)=60.3504m/s  (and that is exact)

d=5s(60.3504m/s)=301.752m

ugh...assume that a meter equals 3.3 feet and do not round your answers???
really?  These people are idiots when there is an exact conversion.  What is the point of not rounding when you are using a horrible approximation?  :D

(198ft/s)(m/3.3ft)=60m/s

d=5s(60m/s)=300m
tatiyna3 years ago
6 0

Answer:

We have been given the conversion rate as:

1 meter is equal to 3.3 feet.

Given condition is :

A parachutist's speed during a free fall reaches  198 feet per second.

So, the speed in meters per second is = \frac{198}{3.3} meter per second

= 60 meter per second.

And at this speed, the parachutist will fall 60\times 5=300

= 300 meters

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3 years ago
Which expression represents the distance between the points (11, 4) and (5,8)?
antiseptic1488 [7]

Answer:

\displaystyle d = 2\sqrt{13}

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

<u>Algebra I</u>

  • Coordinates (x, y)

<u>Algebra II</u>

  • Distance Formula: \displaystyle d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

Step-by-step explanation:

<u>Step 1: Define</u>

Point (11, 4) → x₁ = 11, y₁ = 4

Point (5, 8) → x₂ = 5, y₂ = 8

<u>Step 2: Find distance </u><em><u>d</u></em>

Simply plug in the 2 coordinates into the distance formula to find distance <em>d</em>

  1. Substitute in points [Distance Formula]:                                                       \displaystyle d = \sqrt{(5-11)^2+(8-4)^2}
  2. [√Radical] (Parenthesis) Subtract:                                                                 \displaystyle d = \sqrt{(-6)^2+(4)^2}
  3. [√Radical] Evaluate exponents:                                                                    \displaystyle d = \sqrt{36+16}
  4. [√Radical] Add:                                                                                               \displaystyle d = \sqrt{52}
  5. [√Radical] Simplify:                                                                                         \displaystyle d = 2\sqrt{13}
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Kristen has 64 coins in her piggy bank. she has $9.25 in dimes and quarters. how many dimes and quarters does she have.
IRISSAK [1]
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If a work group consistently achieves 80 % of its quarterly goals and the work group generally has 25 objectives per quarter how
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To determine the number of goals the group achieve in a given quarter (q), multiply the total goals they generally have (n) by their percent success (r)
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