I am not sure how to do this diamond problem

Mathematics

2 answers:

Nadya [2.5K]3 years ago

5 0

Answer:

-10 and -10

Step-by-step explanation:

-10x-10=100

-10+-10=20

4vir4ik [10]3 years ago

4 0

It looks like you are trying to factor a quadratic. So you are looking for the numbers that when you multiply them, you get the top number (100), but when you add them you get the bottom number (-20).

Those two numbers are -10 and -10.

Hope that helps!

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What is the piecewise-defined function that expresses the cost of the order, C(x), in terms of the number of photos ordered, x?

Murljashka [212]

Answer:

See below

Step-by-step explanation:

The values in the table change by $3.80 from one line to the next. Since each change from line to line changes in number of photos by 20, the average cost per photo is $3.80/20 = $0.19. There is apparently a $5.80 -3.80 = $2.00 shipping charge for numbers of photos in the range shown in the table.

Thus, the piecewise function has 3 pieces:

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This could be written as ...

$C(x)=\left\{\begin{array}{rcl}\$2.00+0.19x&\text{for}&0\le x$