Obin is solving the equation 3 (x minus 1.25) = 11.25. His work is shown below. 3 (x minus 1.25) = 11.25. 3 x minus 3.75 = 11.25. 3 x minus 3.75 + 3.75 = 11.25 + 3.75. 3 x = 15. 3 x times 3 = 45 times 3. x = 135.

What mistake did Tobin make?
Tobin did not distribute the 3 correctly.
Tobin should have subtracted 3.75 from each side.
Tobin should have divided by 3.
Tobin did not make a mistake.

c

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.

answe: it will take 4.5 hours for naomi and clair to paint an equal number of square feet

hope i

-lavira : )