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yulyashka [42]
3 years ago
11

A woman jogs for 2 km at 8 km/h and then walks for 2 km

Mathematics
1 answer:
Artemon [7]3 years ago
3 0

Answer:

  6 6/7 km/h

Step-by-step explanation:

The relations between speed, time, and distance are ...

  time = distance/speed

  speed = distance/time

__

So, to find the average speed, we need to know the total distance and the total time. The distances are given, but we need to compute the times.

  time jogging = (2 km)/(8 km/h) = 1/4 h

  time walking = (2 km)/(6 km/h) = 1/3 h

Then the woman's average speed is ...

  average speed = (total distance)/(total time) = (2 km + 2 km)/(1/4 h + 1/3 h)

  = (4 km)/(7/12 h) = 48/7 km/h

  = 6 6/7 km/h

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Westside Bakery uses 440 pounds of flour to make 1,000 loaves of bread. Each contains the same amount of flour . How many pounds
Doss [256]

Answer: There is 0.44 pounds of flour in each loaf of bread.


Step-by-step explanation:

Given: Flour in 1000 loaves of bread=440 pounds

To find quantity of flour required to make one loaf of bread, we need to divide 440 pounds by 100 loaves of bread.

Thus, Quantity of flour required to make one loaf of bread=\frac{440}{1000}=0.44 pounds

Therefore, there is 0.44 pounds of flour in each loaf of bread.

6 0
3 years ago
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Plese help with geometry question 24 was a guess ! Thank you
AlekseyPX
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a) 23
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b)28
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c)62
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d) 28
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Which choice below shows the following numbers in order from least to greatest?
vfiekz [6]

Answer:

1/3, \sqrt{4}, π, \sqrt{16}, 8

Step-by-step explanation:

Simplifying or rounding complicated numbers to integers can help us order them.

  • Integer - an integer is any whole number, including zero, that can be negative or positive.

Simplifying Numbers

Numbers like 1/3 and 8 don't need to be simplified because they are commonly used and understood.

Both 4 and 16 are perfect squares. So, to simplify these numbers we can just solve.

  • \sqrt{4} = 2
  • \sqrt{16} = 4

There is no way to "solve" pi, but we can round it to an easier number. Technically, pi is irrational, so there is no way to write out the whole number. However, in this case, we can just round to the nearest whole number.

  • π ≈ 3

This means, in the order they appear, the simplified numbers are 2, 8, 4, 1/3, and 3.

Ordering the Numbers

From this point, they should be easy to order.

  • 1/3 is the smallest because it is the only number less than 1.
  • \sqrt{4} is next because it is equal to 2
  • π is third since it is only slightly above 3
  • \sqrt{16} is fourth since it is equal to 4
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5 0
2 years ago
Expand and simplify
Blababa [14]
<h2>Question:</h2>

→To simple the given equations

  • ( 2x + 1 ) + 5x
  • ( x + 3 ) ( x + 4 )
  • ( x + y ) ²
  • ( 2x + 1 ) ( x - 3 )
<h2 /><h2>Answer:</h2>

<h3>Part 1:</h3>

\green{step \: 1}

→3 ( 2x + 1 ) + 5x

\green{step \: 2}

→6x + 3 + 5x

\green{step \: 3}

→\blue{11x + 3✓}

<h3>part 2:</h3>

\green{step \: 1}

→( x + 3 ) ( x + 4 )

\green{step \: 2}

→{x}^{2}  + 4x + 3x + 12

\green{step \: 3}

→\blue{ {x}^{2}  + 7x + 12✓}

<h3>part 3:</h3>

\green{step \: 1}

→( x + y ) ^2

\green{step \: 2}

→\blue{{x}^{2}  +  {y}^{2}  + 2xy✓}

<h3>part 4:</h3>

\green{step \: 1}

→( 2x + 1 ) ( x - 3 )

\green{step \: 2}

→2 {x}^{2}  - 6x + x - 3

\green{step \: 3}

→\blue{2 {x}^{2}  - 5x - 3✓}

<u>★</u><u>What do you mean by simplifying an equation:</u>

  • Simplifying an evaluation means to solve any difficult or easy equation in as simple form as possible .

<u>★</u><u>Steps we can do to simplify the equation:</u>

  • Open brackets/parentheses to make the equation more simplified.

  • Add /subtract numbers or numbers with same variable/constant.

thankyou ❤️

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