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Joey H.
June 18, 2021
Nice Video, clear and concise.
Jeel M.
December 9, 2021
60 mm=c m
Alan S.
December 29, 2021
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January 6, 2022
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Abraham S.
April 5, 2022
w is no more than 2 units from 7
Julie D.
May 9, 2022
Let A = N N. De ne the relation R on A by (m; n)R(r ; s) means m + s = r + n. Show that R is an equivalence relation. If B = f(x; y) 2 Z x Z|y is not equal to 0}, and S is the relation on B given by (a; b)S(c; d) if and only if ad = bc, is S an equival
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07:20
Alix Segil
Using Models Use the model given to answer the questions about the object or process being modeled. The gas mileage $M($ in milgal) of a car is modeled by $M=N / G,$ where $N$ is the number of miles driven and $G$ is the number of gallons of gas used. (a) Find the gas mileage $M$ for a car that drove 240 mi on 8 gal of gas. (b) $A$ car with a gas mileage $M=25$ mi/gal is driven 175 mi. How many gallons of gas are used?
01:56
Taylor Shimono
Suppose gas costs $\$ 3.50$ a gallon. We make a model for the cost $C$ of buying $x$ gallons of gas by writing the formula $C=$ _________.
03:07
Using Models Use the model given to answer the questions about the object or process being modeled. Arizonans use an average of 40 gal of water per person each day. The number of gallons $W$ of water used by $x$ Arizonans each day is modeled by $W=40 x$ . (a) Make a table that gives the number of gallons of water used for each $1000-$ person change in population, from 0 to $5000 .$ (b) If the pressure is $30 \mathrm{lb} / \mathrm{in}^{2},$ what is the depth? (b) What is the population of an Arizona town whose water usage is $120,000$ gal per day?
02:13
Using Models Use the model given to answer the questions about the object or process being modeled. A mountain climber models the temperature $T$ ( in $^{\circ} \mathrm{F}$ ) at elevation $h$ (in ft) by $$T=70-0.003 h$$ (a) Find the temperature $T$ at an elevation of 1500 $\mathrm{ft}$ . (b) If the temperature is 64$^{\circ} \mathrm{F}$, what is the elevation?
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we're being asked to evaluate each of the following expressions. So let's start with number one So it says the absolute value of eight. So that means how far from zero on the number line is eight. Well, that would be eight units. So the absolute value of eight is just equal to eight now for number two, the absolute value of negative seven. While how Maney units away from zero is negative seven on the number line, while it would be seven units away. Therefore, the absolute value negative seven is equal deposit of seven now for number three, the absolute value a negative 11.2. So how maney units away from zero is negative 11.2. Well, that would be positive 11.2 units. So the absolute value of negative 11.2 is positive 11.2 and lastly, the absolute value of zero. Well, how far away from zero is zero number line? Well, you don't have to move anywhere. It's zero units away, so the absolute value of zero is just equal to zero. So no, this Whenever you take the absolute value of number, you always end up with a positive value because you're talking about distance
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