The wingspan of an airplane is 197 feet. A model of this airplane uses a scale of 5 inches equals 40 feet. What is the wingspan of the model airplane?

24.625 in. = the wingspan of the model.

Step-by-step explanation:

Set up a proportion.  

Let x = the wingspan of the model.

Substitute info into the proportion.  

40x = 985

x = 24.625 in.

283 square feet

step-by-step explanation:

good luck

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!