Ali builds model planes. He uses a scale of 8 cm to represent 1.8 m. a) What is the ratio of a length on the model to the actual length on the plane?

b) A plane has a length of 72 m. What is the length of the model?

c) A model has a length of 60 cm. What is the actual length of the plane?

Plz help thank you

correct answer:

b.(19,-2)

where did you get them? if you picked from the grass, is is probably poisonous.

step-by-step explanation:

x = -4

step-by-step explanation:

- 20 - 4(x + 3) = 4x

=> -20 - 4x - 12 = 4x

=> - 32 -4x = 4x

=> -32 = 4x + 4x

=> - 32 = 8x

=> -32/8 = x

=> -4 = x

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.