Trevor's sister is 1/8 the height of a 40-foot dinosaur. She is
A. 6 feet tall
B. 5.5 feet tall
C. 5.3 feet tall
D. 5 feet tall
So that is my homework question i don't understand how to make a propotion to answer the question.
1/8 = x/40
Cross multiply and solve for x.
5 feet tall or D.
1/8 times x/40 (the proportion)
You would then cross multiply.
So then you'd have 40=8x.
Then you can divide by eight on each side and you'd get 5 feet.
Hope this helped!
To solve this problem, you need to set up a proportion and solve for Trevor's sister's height.
Here's how you can set up the proportion:
Let x be the height of Trevor's sister. Since Trevor's sister is 1/8 the height of the dinosaur, the proportion can be written as:
x / 40 = 1/8
To solve for x, you can cross-multiply and then solve for x:
(x)(8) = 40
8x = 40
Divide both sides of the equation by 8 to isolate x:
x = 40 / 8
x = 5
Therefore, Trevor's sister is 5 feet tall, which corresponds to answer choice option D.