Giselle works as a carpenter and as a blacksmith. she earns $20\$20$20dollar sign, 20 per hour as a carpenter and $25\$25$25dollar sign, 25 per hour as a blacksmith. last week, giselle worked both jobs for a total of 30303030 hours, and earned a total of $690\$690$690dollar sign, 690. how long did giselle work as a carpenter last week, and how long did she work as a blacksmith?

step-by-step explanation:

i hate black

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:

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