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Jobisdone [24]
3 years ago
8

How to solve 64mi/h=93.9ft/s

Mathematics
1 answer:
kolbaska11 [484]3 years ago
8 0

64 mi      1 h            1 min             5280 ft

------- *   -------- *    -----------------*   ---------     =

h              60 min     60 sec         1 mi

337920ft

--------------

3600sec


93.8666666666666ft/s

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Determine whether quadrilateral ABCD is a rhombus, a rectangle, a square, a parallelogram, or none. List all that apply. Explain
svlad2 [7]

Answer:

  • ABCD is a rhombus, and a parallelogram

==================================

<h3>Given </h3>

  • Points A(-6, - 1), B(4, - 6), C(2, 5), D(- 8, 10)

First, plot the points (see attached picture).

Then, connect all the points.

<h3>We see that:</h3>

  • Opposite sides are parallel,
  • Diagonals are perpendicular.

From our observation the figure is rhombus.

Let's confirm it with the following.

1) Find midpoints of diagonals and compare.

  • AC → x = (- 6 + 2)/2 = - 2, y = (- 1 + 5)/2 = 2
  • BD → x = (4 - 8)/2 = - 2, y = (- 6 + 10)/2 = 2

The midpoint of both diagonals is same (- 2, 2).

2) Find slopes of diagonals and check if their product is -1, this will confirm they are perpendicular.

  • m(AC) = (5 - (-1))/(2 - (-6)) = 6/8 = 3/4
  • m(BD) = (10 - (-6))/(-8 - 4) = - 16/12 = - 4/3

  • m(AC) × m(BD) = 3/4 * (- 4/3) = - 1

<u>Confirmed.</u>

So this is a rhombus and also a parallelogram but <u>not</u> rectangle or square, since opposite angles are not right angles.

5 0
1 year ago
Allen earns $7 an hour to wait on tables at a restaurant. In addition, he makes an $8 tip from each table. He waited on 6 tables
posledela

The answer is -- 8 hours

Explanation:

8 (tip) x 6 (tables) = $48

104 - 48 = $56

56 / 7 = 8

4 0
3 years ago
Need help fast!!!!!!!!!!!!!!!
jenyasd209 [6]

k(3)=13(3)-2

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8 0
3 years ago
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olga2289 [7]

Answer:

4, 9 and 25.

Step-by-step explanation:

4 because 4 = 2 + 2     ( 2 being prime)

9 because 9 = 7 + 2     (7 being prime).

25 because 25 = 23 + 2 (23 being prime).

5 0
3 years ago
Find f(-5), if f(x) = -x^2 - 2x+1
weeeeeb [17]
Simple as subbin' in -5 for x.
f(-5) = -(-5)² - 2(-5) + 1
= -25 + 10 + 1
= -14
4 0
3 years ago
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