. The lengths of the legs of a
45°-45°-90° triangle can be
described by the expressions
3x – 10 and x + 2. What is the
length of the legs of the triangle?

if you use photomath right away it will give you the answer not like this app that you have to wait for people.

341

step-by-step explanation:

all you have to do is 9x31 (which equals 279) and then 20x31 (which equals 620). then you have to subtract. 620-279=341.

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.