Last year, deanna bought 225 lamps when customers needed 250 lamps. this year, she bought 300 lamps but only sold 200 lamps. which set of statements about the percent errors for the two years is true?

the percent error for this year was lower. deanna estimated better last year.
the percent error for this year was higher. deanna estimated better last year.
the percent error for this year was lower. deanna estimated better this year.
the percent error for this year was higher. deanna estimated better this year.

The percent error for this year was higher. Deanna estimated better last year.

Step-by-step explanation:

For last year

Expected value by Deanna=225

Accepted value by customers=250

Error=Expected value-Accepted value=225-250=-25

Percent error for last year=

For this year

Expected value by Deanna=300

Accepted value by customers=200

Error=Expected value-Accepted value=300-200=100

Percent error for this year=

We can see the percent value of this year is higher, Deanna estimated better last year.

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europa2433

step-by-step explanation:

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.