Jon ate too many holiday cookies and gained 9 pounds in December. Then he went on a diet and lost 4 pounds in January. Then he lost another 7 pounds in February. Jon wants
to know what the total change in his weight was over these three months. Which of the
following equations matches the situation above?
0-9+4+7
O 9+ (-4) + (-7)
O None of the above.

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.

,jkulgiurutrjyftkugyi.uykujuyxjdkytuf,yukj

step-by-step explanation:

answer: the angel abc is 30°,and the abc is a triangle where the angel bac is 90°

so ac is the half of 24=12ft,and from the pythagorean theorem we find ba

ba=√bc^2-ac^2=√576-144=√432=12√3ft

so bac is 12+12√3=12(1+√3)ft