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rusak2 [61]
2 years ago
14

A hiker climbs a 5-mile trail up a mountain in 2 hours. On the return trip downhill, she walks the same trail and returns to her

starting point in 1 hour. What was her average rate of speed, in miles per hour, for the entire trip?
Mathematics
1 answer:
Ivahew [28]2 years ago
7 0

Answer:

3.33 miles per hour

Step-by-step explanation:

The total distance traveled by the hiker is 5 * 2 = 10 miles, and the total time travelled is 2 + 1 = 3 hours.

So, to find the average speed of the entire trip, we can use the formula:

distance = speed * time

With distance = 10 and time = 3, we have:

10 = speed * 3

speed = 10/3 = 3.33 miles per hour.

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3. A group of workers is harvesting berries at a constant rate. An equation that represents the number of baskets of berries the
grin007 [14]

In y = mx + b form, the slope can be found in the m position and the y intercept can be found in the b position.



y = mx + b


y = 2x + 15


slope(m) = 2 and y int (b) = 15



The initial amount is the y intercept, which is 15. The rate of change (the slope) is 2


example :  


baskets picked in 1 hr :


y = 2(1) + 15


y = 2 + 15


y = 17



baskets  picked in 2 hrs :


y = 2(2) + 15


y = 4 + 15


y = 19



so the slope ( rate of change) is basically saying for every hr of picking, you pick 2 baskets...so your picking 2 baskets per hr.


The y intercept (15) is telling us that they already had 15 baskets to start with.

6 0
3 years ago
For a craft project, Jackie spent 45 minutes beading, 10 minutes painting, and 25
anygoal [31]

Answer:

1 hour and 20 minutes

Step-by-step explanation:

45+25+10=80 minutes which equal 1 hour and 20 minutes

3 0
3 years ago
Which value for k makes the equation 42 ÷ k = 14 true
Rudiy27

Answer:

k=3

Step-by-step explanation:

6 0
2 years ago
Rewrite 5ab showing the multiplication signs
monitta

Answer:

5ab = 5 \times a \times b

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
A publisher estimates the annual demand for a book to be 8000 copies, and built a warehouse to accommodate at most 8000 copies.
Illusion [34]

Answer: $1000

Step-by-step explanation:

Annual demand (D) = 8000

Cost per order (S) = $1000

Cost per unit to print = $8 per book

Storage cost = $2 per book per year

The minimum total cost can be found thus :

√(2 × D × S) / storage cost * cost per unit

√(2 × 8000 × 1000) / (2 * 8)

√ (16,000,000 / 16

√ (1,000,000

= 1000

Hence , minimum total cost $1000

8 0
3 years ago
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