13.5 kg of bronze was made by combining 8.1 kg of copper which costs $2.40/kg with 5.4 kg of tin which costs $7.40/kg. Find the cost per kg of the mixture.

The correct answer is $4.4

Explanation:

The cost per kilo of the bronze can be found by calculating the total price of the combination of metals and then dividing this by the total of bronze kilos. Now, let's first calculate the cost of copper and tin.

Copper:

$ 2.40 x 8.1 = $19.44

Tin:

$7.40 x 5.4 = $39.96

Total cost:

$19.44 + $39.96 = $59.4 (Total cost for the 13.5 kg of Bronze that combines tin and copper)

Finally, to find the price of a kilo of bronze divide the total cost into the kilograms of bronze.

$59.4 ÷ 13.5 = $4.4

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing

step-by-step explanation:

146%

step-by-step explanation: