Answer:
r = s(t - 9).
Step-by-step explanation:
r/ s = t - 9 Multiply both sides by s:
r = s(t - 9).
The answer could be choice 1 or 3.
With direct variation, we simply multiply one variable to get the other variable.
In #1, we are multiplying t by 50.
In #3, we are multiplying t by r.
In both cases, t is just be multiplied by a number.
#59)
Joe: 5a + 4b = 6 (1st)
Dawn: 3a + 6b = 6.3 (2nd)
Multiply 1st equation by 3 and 2nd equation by (-5) to eliminate a
15a + 12b = 18
-15a - 30b = -31.5
------------------------------Add
-18b = - 13.5
b = 0.75
substitute b = 0.75 into 5a + 4b = 6
5a + 4(0.75) = 6
5a + 3 = 6
5a = 3
a = 0.6
Answer: Apple cost 60 cents each and banana cost 75 cents each
#60)
Wesley and Brian have total 87 baseball cards.
W + B = 87
Wesley has 30 less than twice as many as Brian
W = 2B - 30 (2nd)
So
W + B = 87
2B - 30 + B = 87
3B = 117
B = 39
W + 39 = 87
W = 48
Answer: Wesley has 48 cards and Brian has 39 cards
Hope they help.
Answer:
slope is undefined
Step-by-step explanation:
Calculate the slope m using the slope formula
m = ( y₂ - y₁ ) / ( x₂ - x₁ )
with (x₁, y₁ ) = (- 6, 8) and (x₂, y₂ ) = (- 6, - 5)
m = 
= 
division by zero is undefined, hence slope is undefined
