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Andreyy89
3 years ago
13

Last year, Theodora estimated that she would sell 96 bracelets. But at the end of the year, she had 16 bracelets left over. Whic

h explains how Theodora can find the percent error of her estimate?
Mathematics
2 answers:
Likurg_2 [28]3 years ago
8 0
%error=100(estimated-actual)/actual

%error=100(96-(96-16))/(96-16)

%error=100(16/80)

%error=1600/80

%error=20%

She overestimated how many bracelets she would sell by 20%
padilas [110]3 years ago
6 0

Answer: The correct answer is A :)

A.) First, find that the exact value is '. The error is 16. The absolute error is 16. Set up the ratio with the absolute error: '. Divide and then multiply by 100 to find the percent error: '.

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A. is the answer hop was this helps I did that problem

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2 years ago
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Find the area of the shaded polygons:
tigry1 [53]

Answer:

10

4

Step-by-step explanation:

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1st = (4+1)/2 x 1 = 2.5  

2nd = (4+1)/2 x 3 = 5/2 x 3 = 2.5x3=7.5

Total = 2.5+7.5=10

Green: if you draw a line down the center, you can divide these into two more manageable triangles. A=1/2bh

1st = 1/2x2x2 = 2

2nd = 1/2x2x2 = 2

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6 0
2 years ago
What are the coordinates of the vertices of the triangle under the translation (x y) (x − 1 y − 3)
Vsevolod [243]

Answer:

A: (-9,-3)(-2,-4)(-5,-8)

B: (-5,2)(-1,-3)(3,2)

C: (4,-7)(-1,-3)(4,1)

D: (-1,-11)(-2,-4)(-6,-7)

Step-by-step explanation:

So of the transformations, translations are pretty much the easiest.  x-1 just means move all coordinates left 1 and y-3 means move all coordinates down 3.  So for the first one the x coordinate gets 1 subtracted from it and the y value gets 3 subtracted from it.

(-8,0) => (-8-1, 0-3) = (-9,-3)

I do recommend double checking though, for practice and in case I flubbed a calculation.  

7 0
3 years ago
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HACTEHA [7]
I think the answer is 15
5 0
2 years ago
Given x : y: z = 5:1:3 and z - y = 28. find the value of x + y​
Vera_Pavlovna [14]

Answer:

x + y = 84

Step-by-step explanation:

Given

x : y : z = 5 : 1 : 3, then

\frac{x}{y} = 5 ( multiply both sides by y )

x = 5y ←

and \frac{y}{z} = \frac{1}{3} ( cross- multiply )

3y = z

Substitute z = 3y into z - y = 28

3y - y = 28

2y = 28 ( divide both sides by 2 )

y = 14 ← ←

Substitute y = 14 into x = 5y

x = 5 × 14 = 70 ← ←

Substitute y = 14 into z - y = 28

z - 14 = 28 ( add 14 to both sides )

z = 42 ← ←

Thus x = 70, y = 14 and z = 42

Hence x + y = 70 + 14 = 84

5 0
3 years ago
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