Answer: 5 is the sqrt of 25
Boys to girls ratio was 3:4 which means out of every 3+4= 7 students, 3/7 are boys and 4/7 are girls. But 40% of the girls left so only 60% are the 4/7. 60% is 0.6 in decimal form so to find how many women are really in the ratio (4/7)/0.6=0.95
the new ratio is 3/7:0.95 or 1:2.22 simplified so the number of boys b is b=w/2.22
This is a classic right triangle trig problem. The ladder leaning against the building serves as the hypotenuse of the triangle, the angle of elevation is the angle created by the ground and the ladder, and where the ladder meets the building is the leg opposite the angle (or the height of the triangle). Use the sin ratio to find the height of the ladder up the building. Sin(70) = x/32. Multiply both sides by 32 to get 32sin70=x and x = 30.07. (You mistyped the D answer, I'm assuming. Do this on your calculator to see)
Answer:
DL
Step-by-step explanation: