Can someone help me A$AP Dr. Walker surveyed $50$ patients about the amount of time spent in the waiting room before their scheduled appointments. She found that $30$ patients waited less than $15$ minutes.

What percent represents the number of patients surveyed who stayed in the waiting room for less than $15$ minutes?

A $15\%$

B $30\%$

C $50\%$

D $60\%$

y=mx+b

step-by-step explanation:

m slope, b y-intercept

solution:

we have to construct

∠m nt ≅ ∠p qr

the steps to draw this construction are

step 1: use a compass to draw an arc from point q which intersects the side pq at point a and the side qr at point b.

step 2: draw a segment nt and use the same width of the compass to draw an arc from point n which intersects the segment nt at a point x.

step 3:

step 4: join points n and y using a straightedge.

step 3:

option (d).maintaining the same width of the compass as ab, draw an arc from point x such that it intersects the arc drawn from n in a point y.

to draw   congruent angles , 1. width of compasses while drawing two angles should be same i.e from point at which angle has to be drawn, 2.the distance between the two points where the compass intersects the two sides should be same while drawing any two congruent angles.

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,