One hour after a hiker left camp, a biker set out to catch up. If the hiker traveled 3 miles per hour and the biker traveled 6 miles per hour faster, how long will it take for the biker to catch up with the hiker?
Answers
Answer:
30 minutes after biker left
Step-by-step explanation:
Given that :
Speed of hiker = 3 mph
Speed of biker = (3 +6) = 9 mph
Present Distance of hiker when the biker set out ;
Present Distance of hiker = speed * time = (3 * 1) = 3 miles
Time taken to catchup equals :
Present distance + (distance when biker set out) = bikers distance
Let time taken = x
(3 + (3 * x)) = (9 *x)
(3 + 3x) = 9x
3 + 3x = 9x
3 = 9x - 3x
3 = 6x
x = 3/6
x = 1/2 hours
x = 30 minutes
30 minutes after biker left
Answer:
0.5 hrs or 30 mins
Step-by-step explanation:
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2x^3-8x^2-24x=2x(ax+b)(cx+d)
a=1 and d=-6
Answers
Answer:
b = 2, c = 1
Step-by-step explanation:
2x³ - 8x² - 24x == 2x(ax + b)(cx + d)
2x³ - 8x² - 24x = 2x(x² - 4x - 12)
= 2x(x + 2)(x - 6)
Answer:
Step-by-step explanation:
b=2, c=1
Answers
Explanation;
Parallel lines have equal gradients.
Answer:
2/3
Step-by-step explanation:
Hope this helps
Answers
Answer:
Step-by-step explanation:
The idea of factoring by grouping is that you don't move anything around. You leave the polynomial in descending order of powers of x and group them together in groups of 2.
Then you factor out what is common in each set of parenthesis.
You know if factoring by grouping "works" if what's inside both sets of parenthesis is exactly the same. Both of ours are (x - 12), so grouping "worked". Match the factoring above to one of your answers.
Answer:
For anyone else viewing this, the answer is option D.
Step-by-step explanation:
This is my evidence. Please mark me brainliest and have a fantastic day!
Answers
Answers
first you will do dispurtive property.
8.2× D = 8.2d. 8.2×87.8=719.96
next you will write your equation down
8.2d+719.97+-61=42.96
you want the variable to be on the LEFT side so to isolate the variable you want to subtract the 719.97+-61= 658.97
now you bring the 658.97 to the right side.
42.96+658.97=701.93
now you divide
85.60
Answer:-32 8/205
Step-by-step explanation:
I solved for d, I hope that is what you are asking. First, I divided -41.96 by 8.2. Then added 61. now the (d+87.8) is by itself. then I just subtracted 87.8. my final answer was -32.03902439024. I simplified it but if you need the long answer there it is. I did not round my answer in between steps at all. I hope this helped! GL!