An engineer is investigating ways to improve gas mileage. his initial hypothesis is, "if we use higher octane gasoline, then the gas mileage will increase." what should his control group be? a) the type of car used in the testb) using higher octane gasolinec) the gas mileage of the test vehiclesd) some cars using regular octane gasoline

Heena wants to measure the volume of a ball that is 24 cm across. how should she set up her equation?

An object is 10 cm from the mirror, its height is 1 cm and the focal length is 5 cm. what is the image height? (indicate the object orientation by including the + or - sign with the answer.) hi = cm +1 -1 +10 -10

Give your knowledge of these things in your paper, you will compare and contrast analog and digital signals to determine which is more reliable for encoding and transmitting information. you’ll compare these features: signal shape numerical values for signal measurements amount of data that can be transmitted energy requirements privacy and security (ability of the signal to be encoded in a secret code) clarity of signal in the space provided, write down what you already know about any of these features. if you’re not sure, write down questions you might have about the features.