Answer:
42
Step-by-step explanation:
there are a possible 6 combinations for a sum of 7:
1,6
6,1
2,5
5,2
3,4
4,3
so we can create this proportion:
7/36 = n/216
n = # times to roll a sum of 7 out of 216
now cross-multiply:
36n = 1512
n = 1512/36
n = 42
Answer:
Step-by-step explanation:
<u>Given</u>
- SP = $25
- SP = CP + 25% = 1.25CP
<u>Find cost price for each memory card</u>
- 25 = 1.25CP
- CP = 25/1.25
- CP = 20
<u>The store paid for 50 memory cards</u>
The equation in rectangular coordinates. (x - 1)² + y² = 1
<h3>What are different Coordinate Systems ?</h3>
There are many types of coordinate system depending upon the usage and ease of working , Spherical , Rectangular , Cylindrical , Polar are the examples of Coordinate System.
It is given that the equation in polar coordinates is r = 2 cosθ
To change in rectangular coordinates
The relation between polar and rectangular coordinate is
x = r cosθ and y = r sinθ
x² + y² = r²
r = 2 cosθ
r² = 2r cosθ
r² = x
so the equation in rectangular coordinate system becomes
x² + y² = 2x
x² - 2x + y² = 0
x² - 2x + 1 + y² - 1 = 0
(x - 1)² + y² = 1
This represents the equation in rectangular coordinates.
To know more about Coordinate System
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(3/8) / 1 = (3/4) / x.....3/8 oatmeal to 1 batch = 3/4 oatmeal to x batches
cross multiply
(3/8)(x) = (3/4)(1)
3/8x = 3/4
x = (3/4) / (3/8)
x = 3/4 * 8/3
x = 24/12
x = 2 <==== 2 batches were made
-3x
I promise this is right