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Drupady [299]
3 years ago
10

Bob is hiking down a 15-mile country trail. He could hike at 5 mph for the first 2 hours and then go the rest of the way at 3 mp

h or he could just go the whole way at 4 mph. How long would each of these options take? Which option is the faster?
Mathematics
2 answers:
Maurinko [17]3 years ago
4 0

Answer:

the fastest is starting at 5 mph then going three because it would take 3.66666666667 hours

Step-by-step explanation:

the 4mph would take 3.75 hour while the 5mph then 3mph only takes 3.666666667

vlada-n [284]3 years ago
4 0

Answer:

The First Option: 3 2/3 hours

The Second Option: 3 3/4 hours

The First Option is fastest.

Step-by-step explanation:

<h2>Option 1: </h2>

First part- 5mph for 2 hours 5·2=10 (D=T·S)

15-10=5 because 15 is the total distance and 10 is the first part.(T=D/S)

Second part- 5/3= 1 2/3

5/3 because 5 is the distance left, and 3 is the speed. The time is 1 2/3 hours.

<h2>Option 2:</h2>

4mph 15m (T=D/S)

15/4= 3 3/4 hours

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Use the associative property<br> write an equivalent expression.<br> (5 + 7) + x =
Firdavs [7]
<h3>Answer:</h3>

5+(7+x)

<h3>Step-by-step explanation:</h3>

Finding an Equivalent Expression

The associative property of addition states that you can move the terms that are inside the parentheses and still have the expression remain true. So, in the answer above, I moved 5 out of the parentheses and x into the parentheses. No matter the value of x the value of the expression will remain the same

Examples and Proof

Another example of the associative property could be (1+6)+3 = 1+(6+3). To prove this statement we can evaluate each side of the expression.

First, let's do (1+6)+3

  • (1+6)+3
  • (7)+3
  • 10

Next, let's do 1+(6+3)

  • 1+(6+3)
  • 1+(9)
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As you can see both of these expressions are the same, thus proving that the associative property works in this situation.

6 0
2 years ago
The product of 4x and 0 is​
Alborosie

Answer:

0

Step-by-step explanation:

any thing that is multiplied by 0 will be 0

8 0
3 years ago
9 students in a class of 80 will attend a movie at Cinemark Movie Theater. What percent of the class will attend the movie at Ci
Mashutka [201]

Answer:

7.2

Step-by-step explanation:

8 0
3 years ago
In how many ways can four people sit next to each other in a movie theater row?
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2 of the them have to seat in the front row and the two others in the back
4 0
3 years ago
Read 2 more answers
(-5 +x)(x+4)solve.
MakcuM [25]

Answer:

Yes , the products of both expressions are the same

Step-by-step explanation:

Given

(-5 + x)( x + 4)

Using the distributive property we have

-5xx -5x4 + xxx +xx4

Negative times positive becomes negative

-5x - 20 + x^2 + 4x

Also (5 + x)(x - 4)

Using the distributive property

5xx +5-4 + xxx +xx-4

5x^2 -20 + x^2 - 4x

The product of -5 + x and x + 4 is equal to the product of 5 + x and x - 4

5 0
3 years ago
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