Answer:
44 swimmers
Step-by-step explanation:
Given the data points :
66, 8) (71, 23) (72 16) (75 30) (78 35) (80 24) (82 37) (86 37) (87 42) (90 50)
Temperature X:
66
71
72
75
78
80
82
86
87
90
Number of swimmers Y:
8
23
16
30
35
24
37
37
42
50
Using the online regression calculator :
The regression model obtained is ;
ŷ = 1.5045X - 88.2056
Where
1.5045 = gradient or slope
-88.2056 = intercept
x = independent variable
y = dependent variable
Number of swimmers when temperature = 88
y = 1.5045(88) - 88.2056
y = 44.19
y = 44 (nearest whole number)
Answer:
4x + 2y = 2
Step-by-step explanation:
8x + 4y = 2 ( divide each term by 2 )
4x + 2y = 1 → (1)
we require a situation where the left side cannot possibly equal the right side.
using 4x + 2y = 2 → (2)
subtract (1) from (2) term by term
(4x - 4x) + (2y - 2y) = 2 - 1 , that is
0 + 0 = 1
0 = 1 ← not possible
thus the system has no solution
The algebraic expression is x = 2y where, "x" is the number of goals with Kumar and "y" is the number of goals with Jacob
<em><u>Solution:</u></em>
Given that Kumar has twice the number of goals as Jacob
To find: algebraic expression
An algebraic expression is a mathematical expression that consists of variables, numbers and operations
<em><u>Let us first define the variables</u></em>
Let "x" be the number of goals with Kumar
Let "y" be the number of goals with Jacob
Then from given statement,
Number of goals with kumar = twice the number of goals as Jacob
Number of goals with kumar = 2(number of goals with Jacob)
x = 2y
Thus the algebraic expression is found
X/9 - 15
X divided ( / ) by 9 minus ( - ) 9
Answer:
m - 7 = -13 + m
Step-by-step explanation: