* -21x + 9y = 66
21x + 28y = 28
37y= 94
y= 94/37
* -3x - 4y = -4
-3x - 4(94/37)= -4
-3x = -4 + (4*(94/37))
Answer: 28 cm
Step-by-step explanation:
x - the length of the shorter piece
2x - the length of the longer piece
Together they are 42 cm long.
Compose te equation:
2x + x = 42
3x = 42
x = 14 cm
The shorter piece is 14 cm, the longer piece is twice longer, 2x, or 2( 14 ).
Two times longer than 14 is 28. The longer piece is 28 cm.
Answer:
3 yards
Step-by-step explanation:
The area of a square is its length × width, where the length and width are the same:
length × width = 9
Since, the length and width are the same lets call them x
x × x = 9 → x² = 9
To find x, find the square root of 9:
x² = 9 → x = √9 → The square root of 9 is 3
Each side has a length of 3 yards
Answer:
Step-by-step explanation:
Given that in a survey of 100 people who had recently purchased motorcycles, data on the following variables were recorded:
a. Gender of purchaser
b. Brand of motorcycle purchased
c. Number of previous motorcycles owned by purchaser
d. Telephone area code of purchaser
e. Weight of motorcycle as equipped at purchase
a) Gender is categorical
b) Brand is categorical
c) This is discrete numerical
d) This is numerical
e) Weight is continuous numerical
