PLEASE ANSWER ASAP!!! FULL ANSWERS ONLY!!!!!! WILL GIVE BRAINLIEST!!!!!!!!! Two cyclists, 68 miles apart, start riding toward each other at the same time. One cycles 3 miles per hour faster than the other, and they meet after 4 hours of riding.
a. Write an equation using the information as it is given above that can be solved to answer this problem. Use the variable r to represent the speed of the slower cyclist.
b. What are the speeds of the two cyclists? _______________
Answers
a) The given equation using the information as it is given above that can be solved to answer this problem is 4r + 4(r+3) = 68
b) The speed of both cyclists are 3mi/hr and 10mi/hr respectively
The formula for calculating the distance covered is expressed as:
Distance = speed * time
Let the speed covered by one cyclist be t
If one cycles 3 miles per hour faster than the other, the speed of the other will be t + 3
If both meet after 4 hours of riding, then their time will be 4 hours
Distance covered the first cyclist = 4r
Distance covered by the second = 4(r+3)
If the two cyclists are 68 miles apart, then:
4r + 4(r+3) = 68
a) The given equation using the information as it is given above that can be solved to answer this problem is 4r + 4(r+3) = 68
b) Expand the equation in a to get "r"
4r + 4r + 12 = 68
8r + 12 = 68
8r = 68 - 12
8r = 56
r = 56/8
r = 7miles per hour
Speed of the first cyclist = 7mi/hr
Speed of the second cyclist = 3 + 7mi/hr = 10mi/hr
Hence the speed of both cyclists are 3mi/hr and 10mi/hr respectively
Learn more here: brainly.com/question/19915685
Answer:
4r + 4(r + 3) = 68
r = 7 miles per hour
r + 3 = 10 miles per hour
Step-by-step explanation:
distance = rate * time
a)
4r + 4(r + 3) = 68
Distribute
4r + 4r + 12 = 68
8r + 12 = 68
8r = 56
r = 7 miles per hour
r + 3 = 10 miles per hour
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I need help asap will give brainiest
Answers
P(A) = 2/5 since there are 2 black out of 2+3 = 5 total
After you make a selection, we have the event
B = event that you select another black sweater assuming event A has happened already
P(B) = 1/4 because there's 1 black sweater left out of 5-1 = 4 left over
Multiply the probabilities
P(A and B) = P(A)*P(B)
P(A and B) = (2/5)*(1/4)
P(A and B) = 2/20
P(A and B) = 1/10
The answer as a fraction is 1/10
In decimal form, it is 0.1
As a percent, the answer is 10%
Answers
Answer: 5/7
Step-by-step explanation: 5x3 = 15 and 3x7=21 , if u simplify it equals to 0.7143 and that is 5/7
Answers
Answer:
55 cents
Step-by-step explanation:
Let's convert 0.45 lb to kilograms
2.20 lb = 1 kg is the conversion factor, hence:
So that's 0.2045 kg
Since 48 pesos is for 1 kg, hence for 0.2045 kg, the cost (in pesos) is:
0.2045 kg * 48 = 9.82 pesos
Now, we know 18 pesos is 100 cents (1 dollar), so how much is 9.82 pesos?? (let number of cents be X)
That's roughly 55 cents
Answers
Answer:
-20, -19
Step-by-step explanation:
The average of the two numbers is -39/2 = -19.5. The smaller number is 0.5 less than this, -20, and the larger number is 0.5 more than -19.5, so is -19.
_____
Comment on the problem and solution
I find that working consecutive integer problems is often simplified by working with the average value of those integers:
- the average of two consecutive odd integers is the even integer between them
- the average of two consecutive even integers is the odd integer between them
- the average of an odd number of integers of the same type (consecutive, consecutive odd, consecutive even) is the middle one
- The average of an even number of consecutive integers is the "half" number between the middle two (as in this problem).
Answers
Answer:
The square root of 25 is 5.
Step-by-step explanation:
You can check your work by doing 5 squared!
:) Hopefully this helps
I already answered your other question!
simplify !!!
Answers
Answer:
3/8 (decimal = 0.375)
Step-by-step explanation:
apply exponent rule
= 1/4 + 2^-3
= 1/4 + 1/2^3
= 1/4 + 1/8
least common deno
= 2/8 + 1/8
= 3/8