Elliott has some yarn that she wants to use to make hats and scarves. Each hat uses 0.2
kilograms of yarn and each scarf uses 0.1
kilograms of yarn. Elliott wants to use twice as
much yarn for scarves as for hats, and she
wants to make a total of 20 items.
Let h be the number of hats Elliott makes and
s be the number of scarves she makes.
Which system of equations represents this
situation

An airplane consumes fuel at a constant rate while flying through clear skies, and it consumes fuel at a rate of 64 gallons per minute while flying through rain clouds. let c represent the number of minutes the plane can fly through clear skies and r represent the number of minutes the plane can fly through rain clouds without consuming all of its fuel. 56c+64r < 900056c+64r< 9000 according to the inequality, at what rate does the airplane consume fuel while flying through clear skies, and how much fuel does it have before takeoff? the airplane consumes fuel at a rate of gallons per minute while flying through clear skies, and it has gallons of fuel before takeoff. does the airplane have enough fuel to fly for 60 minutes through clear skies and 90 minutes through rain clouds?

Issof claims that the scale factor is 1/2. which statement about his claim is correct

If a 36 inch yardstick casts a 21 foot shadow, how tall is a building whose shadow is 168 feet? what is the scale factor