Call T the price of the T-shirts and P de price of the jeans
Initially (without discount)
2T + P = 40
One month later (half prices)
2 (T/2) + 5(P/2) = 60
T +5P/2 = 60
To solve the system of equations multiply the second equation by 2 and substract it from the first equation
2 T + 5P = 120
- (2 T + P = 40 )
________________
4P = 80
P = 80/4
P = 20
From 2T + P = 40
T = (40 - P) / 2 = (40 -20) / 2 = 20/2 = 10.
The price of a T-shirt is $10 and the price of a pair of jeans is $20.
Ohh this is easy ok so count the numbers and all of them are the number part like 16-32 16+16=32 keep going on like that for both problem and explain how u did it so ur teacher knows you get it now
(d) The particle moves in the positive direction when its velocity has a positive sign. You know the particle is at rest when and , and because the velocity function is continuous, you need only check the sign of for values on the intervals (0, 3) and (3, 6).
We have, for instance and , which means the particle is moving the positive direction for , or the interval (3, 6).
(e) The total distance traveled is obtained by integrating the absolute value of the velocity function over the given interval:
which follows from the definition of absolute value. In particular, if is negative, then .
The total distance traveled is then 4 ft.
(g) Acceleration is the rate of change of velocity, so is the derivative of :
Compute the acceleration at seconds:
(In case you need to know, for part (i), the particle is speeding up when the acceleration is positive. So this is done the same way as part (d).)
It took June 4 hours to get from Brookline to Brooklyn.
<h3><u>Time calculation</u></h3>
Given that June is driving from Brookline, Massachusetts to Brooklyn, New York, and the cities are 200 miles apart, and she can drive at a constant speed of 50mph the entire way, to determine the function that solves the time June takes to complete the route, the following calculation must be made:
- C / Constant speed = T
- 200 / 50 = T
- 4 = T
So it took June 4 hours to get from Brookline to Brooklyn.
Learn more about time calculation in brainly.com/question/26707195
No, it is not a valid inference because her classmates do not make up a random sample of the students in the school.