A jeweler has 20 ounces of a gold alloy worth $160 per ounce and 10 ounces of a silver alloy worth $140 per ounce. She has a third alloy that is worth $124 per ounce. How much of this third alloy must she combine with the other two to make 3-ounce pieces of jewelry worth $438 each?

a function could be identified in 3 ways either on a chart,graph, or ordered pairs. first a function is that each point has its own. the rule is that there can be many x's to one y but there can not be 2 x's at different y's. so on a graph when you put a straight line through the y's there should be one dot only to be a function.

step-by-step explanation:

t hope this

:

the answer is:

the lateral area is equal to

to find the lateral area of the square pyramid, first we need to find the perimeter of the base, and then, find the lateral area using the following formulas:

where,

s, is the base length

slant height, is the height of a the side of the pyramid

we are given:

now, calculating the perimeter of the base, we have:

then, calculating the lateral area:

hence, we have that the lateral area is equal to

have a nice day!

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