Time answer 15 points

jolianne worked half as many hours as andrew. jolianne makes $10 per hour and has saved $27. andrew makes $8 per hour and has no money saved. after getting paid, they have the same amount of money.

andrew claims that only his table and equation are correct, but jolianne claims that both tables and equations are valid. which statement regarding their claims is true?

andrew is correct because t cannot be used to represent the number of hours jolianne worked.

andrew is correct because jolianne worked half as many hours as he did and he did not work twice as many hours as she did.

jolianne is correct because if one lets t = hours andrew worked, then his equation is valid. if one lets t = hours jolianne worked, then andrew worked twice as many so her equation is valid, too.

jolianne is correct because when solving t in her equation, t = hours jolianne worked, and when solving for t in andrew’s equation, t = hours jolianne worked so they are equal.

How do i get the answer for 2/3 * 10/3

Airplane speeds are measured in three different ways: (1) indicated speed, (2) true speed, and (3) ground speed. the indicated airspeed is the airspeed given by an instrument called an airspeed indicator. a plane’s indicated airspeed is different from its true airspeed because the indicator is affected by temperature changes and different altitudes of air pressure. the true airspeed is the speed of the airplane relative to the wind. ground speed is the speed of the airplane relative to the ground. for example, a plane flying at a true airspeed of 150 knots into a headwind of 25 knots will have a ground speed of 125 knots. the problems below refer to static and dynamic pressure. static pressure is used when a body is in motion or at rest at a constant speed and direction. dynamic pressure is used when a body in motion changes speed or direction or both. a gauge compares these pressures, giving pilots an indicated airspeed. in problem #s 1 and 2, use the following information. the indicated airspeed s (in knots) of an airplane is given by an airspeed indicator that measures the difference p (in inches of mercury) between the static and dynamic pressures. the relationship between s and p can be modeled by s=136.4p√+4.5. 1. find the differential pressure when the indicated airspeed is 157 knots. 2. find the change in the differential pressure of an airplane that was traveling at 218 knots and slowed down to195 knots. in problem #s 3 and 4, use the following information. the true airspeed t (in knots) of an airplane can be modeled by t=(1+a50,000) ⋅ s, where a is the altitude (in feet) and s is the indicated airspeed (in knots). 3. write the equation for true airspeed t in terms of altitude and differential pressure p. 4. a plane is flying with a true airspeed of 280 knots at an altitude of 20,000 feet. estimate the differential pressure. explain why you think your estimate is correct.

What is the value of x when x + 7 = 21?