Answer:
3
Step-by-step explanation:
Answer:
x = -2
Step-by-step explanation:
![3[- x + (2x + 1)] = x - 1](https://tex.z-dn.net/?f=3%5B-%20x%20%2B%20%282x%20%2B%201%29%5D%20%3D%20x%20-%201)
![= > 3[ - x + 2x + 1 ] = x - 1](https://tex.z-dn.net/?f=%20%3D%20%20%3E%203%5B%20-%20x%20%2B%202x%20%2B%201%20%5D%20%3D%20x%20-%201)
![= > 3[x + 1] = x - 1](https://tex.z-dn.net/?f=%20%3D%20%20%3E%203%5Bx%20%2B%201%5D%20%3D%20x%20-%201)




Answer: nickels = 13, dimes = 7, quarters = 14
<u>Step-by-step explanation:</u>
First, set up the equations for each coin:

Next, the sum of the coins is $4.85 so substitute and solve for the variable:
Nickels + Dimes + Quarters = Sum
(0.30 + 0.05d) + 0.10d + 0.50d = 4.85
0.30 + 0.65d = 4.85
0.65d = 4.55
d = 7
Lastly, plug the d-value into the quantity equation for the nickels and quarters to find their quantity.
nickels: 6 + d = 6 + (7) = 13
quarters: 2d = 2(7) = 14
Answer:
0.3
Step-by-step explanation:
Divide the second term (12) with the first term (40), and you'll get 0.3
This is correct because you get the terms in the correct order when multiplying:
(First term: 40. Common ratio: 0.3)
40 x 0.3 = <u>12</u>
<u>12</u> x 0.3<em> </em>= <em>3.6</em>
40, <u>12</u>, <em>3.6</em>
DC-10
At t=0 the altidude is 4500 feet
It's descending at a rate of 150 feet per minute, then each 5 minutes it descends (150 feet/min)(5 min)=750 feet. Then:
At t=5 the altitude is 4500 feet-750 feet=3750 feet
At t=10 the altitude is 3750 feet-750 feet=3000 feet
727
At t=0 the altidude is 600 feet
It's climbing at a rate of 75 feet per minute, then each 5 minutes it climbs (75 feet/min)(5 min)=375 feet. Then:
At t=5 the altitude is 600 feet+375 feet=975 feet
At t=10 the altitude is 975 feet+375 feet=1350 feet
The graph with these characteristics is Graph B.
Answer: The graph B shows when the two planes will be at the same altitude