The unit in three miles is 5 rate oer hour hoped i helped ypu ouyt
Answer:
-2x^2-8x+4
Step-by-step explanation:
Answer:
4.24
Step-by-step explanation:
Total price = price of the book + 5% of the price of the book
T = total price P = price of the book G = GST
T = P + G
and
G = 5% of P = 0.05P
therefore
T = P + 5%P = 1P + 0,05P = 1.05P
P = T/1.05 = 89/1.05 ≅ 84.76 (it is 84.7619047619)
G = 89 - 84.76 = 4.24
You are buying 2 items so let's use two different variables to represent each:
p = number of tubes of paint
b = number of disposable brushes
cost = price per item × number of items
Equations from information given:
4p + 0.50b = 20 ← from the first 2 sentences
2p = b ← if there are twice as many brushes as paint tubes you need 2 times paint tubes to equal number of brushes
Solve the problem by using substitution... 1b equals 2p so replace b with that:
4p + 0.50(2p) = 20
4p + 1p = 20 ← 0.50 is half so half of 2p is 1p
5p = 20 ← combine like terms
p = 4 ← divide both sides of the equation by 5
Recall the equation 2p = b replace p with 4
2(4) = b
8 = b
ANSWER:
You purchased 4 tubes of paint and 8 disposable brushes.
