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Fed [463]
3 years ago
12

Regina, courtney, and Ellen hiked around bear pond. Regina hiked 7/10 of the distance in an hour. Ellen hiked 3/8 of the distanc

e in an hour. compare the distance hiked by each person
Mathematics
1 answer:
Kitty [74]3 years ago
8 0
7/10 > 3/8

I found this by first finding a common denominator, so for this it will be 40. 10 can go into 40 four times, so you do 7x4 and that is 28, so 7/10 is 28/40.
3/8 is 15/40 because 8 goes into 40 five times, so you do 5x3 which is 15, so the fraction is 15/40. 15/40 is less than 28/40 because 28 > 15
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A triangle has a base of 17 inches and an area of 127.5 in.² what is the height of the triangle
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Base = 17 in 
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Anybody good at math?<br><br>1) 2x + 8y = 20<br>y=2​
marysya [2.9K]

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Step-by-step explanation:

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Read 2 more answers
Which of the following is an odd function?
Archy [21]

Option 4

f(x) = -x is an odd function

<em><u>Solution:</u></em>

A function is odd if and only if f(–x) = –f(x)

<em><u>Option 1</u></em>

f(x) = x^3 + 5x^2 + x

Substitute x = -x in above equation

f(-x) = (-x)^3 + 5(-x)^2 + (-x)

Cubes always involve multiplying a number by itself three times, so if the number is negative the cube will always be negative

Ans squaring results in positive

f(-x) = -x^3 + 5x -x  --- eqn 1

-f(x) = -(x^3 + 5x^2 + x)\\\\-f(x) = -x^3 - 5x^2 - x  ---- eqn 2

Comparing eqn 1 and eqn 2,

f(-x) \neq -f(x)

Therefore not an odd function

<em><u>Option 2</u></em>

f(x) = \sqrt{x}

f(-x) = \sqrt{-x}

-f(x) = - \sqrt{x}

Therefore,

f(-x) \neq -f(x)

Therefore not an odd function

<em><u>Option 3</u></em>

f(x) = x^2 + x\\\\f(-x) = (-x)^2 + (-x)\\\\f(-x) = x^2 - x

-f(x) = -(x^2 + x) = -x^2 - x

f(-x) \neq -f(x)

Therefore not an odd function

<u><em>Option 4</em></u>

f(x) = -x\\\\f(-x) = -(-x) = x

-f(x) = -(-x) = x

f(-x) = -f(x)

Thus option 4 is correct and it is an odd function

6 0
3 years ago
What is 3 multiplied by 3/8 as a mixed number
Vaselesa [24]

Answer:

1 1/8

Step-by-step explanation:

3 * 3/8

9/8

8 goes into 9 1 time

8*1 =8

9-8 =1  so there is 1 left over

The left over goes over the denominator

1 1/8

6 0
3 years ago
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