Answer:
Step-by-step explanation:
÷ 
× 
=
Answer:
y=-2x+80
Step-by-step explanation:
40=(-2*20)+b
40=-40+b
80=b
y=(-2*20)+80
y=-40+80
y=40
Answer: M = ⁹/₅S
Step-by-step explanation:
M ∞ S -------------------------------- 1
M = KS ------------------------------ 2
K is a constant and need to be calculated
substitute for M and S in 2 to find K
900 = K500
K = ⁹⁰⁰/₅₀₀
= ⁹/₅
Therefore , the equation that connect / relates M to S will be
M = KS
M = ⁹/₅S
Answer:
t = $23
s= $47
Step-by-step explanation:
First order =
13t + 4s = 487
Second order
6t + 2s = 232
13t + 4s = 487 (1)
6t + 2s = 232 (2)
Multiply (2) by 2
12t + 4s = 464 (2b)
13t + 4s = 487
12t + 4s = 464
Subtract
12t - 10t = 487 - 464
t = $23
Substitute t = 23
13t + 4s = 487
13(23) + 4s = 487
299 + 4s = 487
4s = 487 -299
4s = 188
s = 188 / 4
= 47
s= $47
