The difference in speeds of el toro and t express is 5 miles per hour. If el toro has the greater speed, write and solve a subtr
1 answer:
Answer: The answer is x = y + 5.
Step-by-step explanation: Given that the difference in speeds of el toro and t express is 5 miles per hour and If el toro has the greater speed. We are to write and solve a subtraction equation to find it’s speed.
Let 'x miles per hour' be the speed of el toro and 'y miles per hour' be the speed of t express. Then, since el toro's speed is 5 miles per hour more that of t express, so
Solving, we get
Hence solved.
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Answer:
Step-by-step explanation:
We will use the standard formula for half-life:
Where A₀ is the initial amount, a is the half-life, d is the time for one half-life, and t is the number of days.
So, we will substitute 1/2 for a and 24.3 for d. This yields:
We have a 3 gram sample. Therefore, our initial amount A₀ is 3:
And we want to find the remaining sample after 10 days. So, t=10. Substitute:
Use a calculator. So:
Therefore, for a 3 gram sample of Phosphorous-32 with a half-life of 24.3 days, after 10 days, there will be approximately 2.255 grams remaining.
The cash price of the article is 88 cedis.
In this question, the article has a price, but paid in cash, there are two discounts.
- Price of 115 cedis.
- Discount of 15%, thus, 1 - 0.15 = 0.85 is paid, that is, the price is multiplied by 0.85.
- Discount of 10%, thus 1 - 0.1 = 0.9 is paid, that is, the price is also multiplied by 0.9.
Thus, the cash price is:
The cash price of the article is 88 cedis.
A similar question is given at: brainly.com/question/14738783