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natima [27]
3 years ago
12

A quilt is designed using a square pattern. Each square contains two rectangles. Each rectangle contains a shaded rhombus.

Mathematics
2 answers:
leva [86]3 years ago
8 0

The sum of angles in any Rhombus is 360 degrees.Opposite angles of a rhombus are congruent.

Two of the adjacent angles are 2x+20 and 50 degrees.

The opposite angles measure 2x+20 and 50 degrees.

Sum of angles in any Rectangle is 360

2x+20+50+2x+20+50=360

Adding line terms,

4x+140=360

Subtracting 140 both sides:

4x=220

Dividing both sides by 4

x=55

Option B. 55  is the right answer.

dsp733 years ago
7 0

The 4 angles of a rhombus should add up to be 360 degrees.

So,........................... 2x + 20 + 2x + 20 + 50 +50 = 360

Combine like terms:............................... 4x + 140 = 360

Subtract 140 from both sides ..........................4x = 220

Divide by 4..............................................................  x = 55                                  

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Answer:

25.4, 28.6

Step-by-step explanation:

Given parameters

sample size, n = 24

sample mean, X = 27

population standard deviation, s = 3

critical value, Zα/2, where α = 0.01

99% confidence Interval, CI, is given as follows

CI = X ± Zα/2 × (s/√n)

Zα/2 = Z0.01/2 = Z0.005 = 2.576

CI = 27 ± 2.576 × (3/√24)

   = (25.42 ,28.57)

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3 years ago
Revel and Scooters are the best scooter experience in the Nation which is the best scooter rental service in the nation? Create
Luda [366]

Answer:

<em>See the graph with both lines attached</em>

A) From the tables we see the constant change of values in the second column and the initial value is zero.

This represents a proportional relationship for both tables.

B) <u>Revel</u>

  • Rate of change is 5 per hour, the equation is:
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<u>Scooters</u>

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C) <u>When x = 12</u>,

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D) <u>The point (4, 24) represents that:</u>

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E) The second table has confusing titles (days and number of cell phones) but if we assume its same as the first table, then Revel has lower rate as 5 < 6.

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8 0
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finlep [7]
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Since you have 9 data points, the median will be the 5th value.
Your data in numerical order would be:
50 50 52 53 54 55 55 55 57

Therefore, the median is 54mm
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mario62 [17]
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3 years ago
Solve for y. <br> 196= 143-y
erik [133]

Answer:

y=339

Step-by-step explanation:

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3 years ago
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