For a gym class and keeps a record of how many miles she runs. for the first half of the semester she runs 23 miles and her grand total at the end of the semester is 50miles. right in equation to model the situation .a)23+x=50 b)x-23=50 c)23-x=50 d)x-50=23

A

Step-by-step explanation:

23+x=50

She 23 miles in the first semester plus another some miles in the second to equal 50 miles.

Letter B.

Step-by-step explanation:

1) Pass the number "23" to the right, and change its sign (+) to (-).

2) Calculate 50 - 23.

Therefore...

x = 27.

So, it is correct to state that the miles it has traveled out the "23" is 27.

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4