The senior class at Ron’s school collected $4250 from students during picture sales at prom. Some students bought $15 packages and others bought $20 packages. In all, 250 packages were sold. Which system of equations could be used to determine x, the number of $15 packages sold and y, the number of $20 packages sold?

Given the following information, your system of equation is going to be...

x + y = 250

15x + 20y = 4250

Step-by-step explanation:

So, in the problem, we are given important key details that can help us solve it.

Now that we have this information, we can solve the problem. Since 250 packages were sold in total, then you are going to add x and y. Since the school collected $4250 from the sales, then you are going to be adding 15x and 20y together.

So, to conclude, your answer is going to be the first answer choice.

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.

definitely a. the others have almost all data points on one side of the line.

step-by-step explanation: