Answer:
y= -3x-16
Step-by-step explanation:
slope intercept form is written as y=mx+b. m is the slope, and b is the y-intercept. -3=m
we know that (-5,-1) is 5 points away from the origin, and that the slope is -3, so 5 times -3 equals -15. subtract 15 from -1 (y-coordinate) in order to get the y-intercept (when x=0).
Answer:
4.502
Step-by-step explanation:
Area of a square is given by
A=L*L = Length squared
20.275=L squared
Applying the square root to both sides of the equation gives L= 4.50222...
L = 4.502 correct to 4 significant figures
Answer:
A. Angel fish = 48
B. Gold fish = 36
Step-by-step explanation:
Clown fish : angel fish = 5 : 4
Angel fish : gold fish = 4 : 3
Clown fish = 60
A. How many angel fish are there
Let x = number of angel fish there
Clown fish : angel fish = 5 : 4
Clown fish : angel fish = 60 : x
Equate the ratios
5 : 4 = 60 : x
5/4 = 60/x
Cross product
5 * x = 4 * 60
5x = 240
x = 240/5
= 48
x = 48
Angel fish = 48
B. How many gold fish are there
Let
y = number of gold fish there
Angel fish : gold fish = 48 : y
Angel fish : gold fish = 4 : 3
Equate both ratios
48 : y = 4 : 3
48/y = 4/3
Cross product
48 * 3 = y * 4
144 = 4y
y = 144/4
= 36
y = 36
Gold fish = 36