Answer:
the second one
Step-by-step explanation:
trust me i've done this before
Answer:
1ft and 3in or 1 1/4ft
Step-by-step explanation:
1ft
12 individed by 3=4in
3 times 4=12 so 1ft and 3in is 1 1/4ft
Answer: 25/4
Step-by-step explanation:
2 / 4/5 = 2*5/4 = 25/4
To divide fractions, multiply by the reciprocal of the fraction (flip the numerator and denominator, basically)
Answer:
16 feet
Step-by-step explanation:
As said in the problem statement, the angles between the top of the house, the mirror, and the ground and between Sarah's eyes, the mirror, and the ground are congruent.
We also know that Sarah and the house are perpendicular to the ground.
So if we draw a triangle from the top of the house, to the mirror, to the bottom of the house, and another triangle from Sarah's eyes, to the mirror, to Sarah's feet, we get two triangles that have the same angles. Therefore, the triangles are similar, and we can write a proportion:
4 / 5 = h / 20
h = 16
The house is 16 feet tall.
