Answer: Ellen traveled 75 miles at 25 miles per hour.
Step-by-step explanation:
Let x represent the number of miles that she travelled at 25 miles per hour.
If the total distance that she covered is 120 miles, then the distance that she covered at 15 miles per hour is (120 - x) miles
Time = distance/speed
Time taken to travel at 25 miles per hour is expressed as
x/25
Time taken to travel at 15 miles per hour is expressed as
(120 - x)/15
Since the total time for the trip is 6 hours, it means that
x/25 + (120 - x)/15 = 6
Multiplying both sides of the equation by 75, it becomes
3x + 5(120 - x) = 450
3x + 600 - 5x = 450
3x - 5x = 450 - 600
- 2x = - 150
x = - 150 / - 2
x = 75
Answer:
radius = 5
Step-by-step explanation:
The equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k) are the coordinates of the centre and r is the radius
(x - 5)² + (y + 3)² = 25 ← is in standard form
with r² = 25 ⇒ r = = 5
A stock is declining a rate of 25% of its value every 2 weeks, the stock started at $225 the equation of the given scenario is
A stock is a form of security that indicates the holder has proportionate ownership in the issuing corporation and is sold predominantly on stock exchanges
Let x represent the number of weeks
Let y represent the value of stock in dollars
The initial value of stock= $225
The stock declining rate of its value every two weeks= 25%
Initially = $225
After one week
= initial value of stock - decreased value stock
Let is the previous stock value and as new stock value
Hence, a stock is declining a rate of 25% of its value every 2 weeks, the stock started at $225 the equation of the given scenario is
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Answer:C
Step-by-step explanation: