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yan [13]
3 years ago
11

Mary increased the amount of vitamin C she takes each day from 48 mg to 54 mg. By what percentage did Mary increase the amount o

f vitamin C she takes each day?
Mathematics
1 answer:
kari74 [83]3 years ago
5 0
% CHANGE FORMULA:
(New # - Original #) ÷ Original # x 100

=(54mg - 48mg)/48mg * 100
=6/48 * 100
=0.125 * 100
=12.5% increase

Hope this helps! :)
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Circle A has center (0, 0) and radius 3. Circle B has center (-5, 0) and radius 1. What sequence of transformations could be use
Dmitrij [34]

A translation of T(x, y) = (- 5, 2) and a dilation with center (- 5, 2) with a scale factor of 1 / 3 are necessary to transform circle A into circle B. (Correct choice: D)

<h3>What sequence of rigid transformations can be done on a circle</h3>

In this problem we must determine the sequence of transformations require to transform circle A into circle B. From analytical geometry we know that the equation of the circle in standard form is:

(x - h)² + (y - k)² = r²

Where:

  • (h, k) - Coordinates of the center.
  • r - Radius of the circle.

Then, we need to apply the following rigid transformations:

Translation

f(x, y) → f(x - h, y - k), where (h, k) is the translation vector.

Dilation with center at the center of the circle

r → k · r, where k is the scale factor.

The circle A is represented by x² + y² = 3, then we derive the expression for the circle B:

f(x, y) → f(x + 5, y - 2)

(x + 5)² + (y - 2)² = 9

r → k · r

(x + 5)² + (y - 2)² = (1 / 3)² · 9

(x + 5)² + (y - 2)² = 1

Then, a translation of T(x, y) = (- 5, 2) and a dilation with center (- 5, 2) are necessary to transform circle A into circle B.

To learn more on rigid transformations: brainly.com/question/28004150

#SPJ1

8 0
1 year ago
I need help solving this equatioion. <br> (2xy)(3y)
aniked [119]

Step-by-step explanation:

So first we will multiply

(2xy)(3y)

=

6x {y}^{2}

7 0
3 years ago
Enter a number.<br><br><br><br> Angle 2 is equal to angle
lesya692 [45]

Answer:

Angle 2 is equal to angle 8.

Step-by-step explanation:

4 0
3 years ago
A company is developing a new high-performance wax for cross country ski racing. In order to justify the price marketing wants,
andrew11 [14]

Answer:

A)Yes they should market the wax, because it melts before 55 seconds

C) Null hypothesis: mean <55 vs. Alternative hypothesis :mean =55

D) the value is 51.33 seconds

Step-by-step explanation:

The selected samples for the champion are : 57.9, 62.9, 50.6, 50.5,48.2,47.2,50.2 and 43.1

The mean is ;

Sum =57.9 + 62.9 + 50.6 + 50.5+48.2+47.2+50.2+ 43.1 =410.6

Mean= 410.6/8 =51.33= mean

Assuming Significant =0.05 thus applying this level will give you 51.28-51.38

if specifically, the mean time to finish their standard test course should be less than 55 seconds for a former Olympic champion, then the null hypothesis is correct

Then;

Null hypothesis: mean <55

Alternative hypothesis :mean =55

7 0
3 years ago
What is the percent rate of change in function y=(0.96)^x? Determine Whether The Function Represents Exponential Growth Or Expon
mihalych1998 [28]
B
The original value will be multiplied by 0.96 each time, making it 4% less than what it was.
3 0
3 years ago
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