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gabby and sydney bought some pens and pencils. gabby bought 4 pens and 5 pencils for $6.71. sydney bought 5 pens and 3 pencils for $7.12. find the cost of each item.

this question has me stumped! it is solving systems word problems. the steps say "define variables , set up equations and solve, identify the answer" im stumped and could really use an explanation on how to solve this, because when i tried to, i got (0.39, 26269/32000) ! you!

720

step-by-step explanation:

first i did work 2nd i did work and 3rd i did work

their is no graph showing

step-by-step explanation:

d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it