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eimsori [14]
3 years ago
10

Abby ran 3 times as many laps as Karen. Adding 4 th the number of laps Abby ran and then dividing by 7 gives the number of laps

Jill ran. Jill ran 1 lap. How many laps did Karen run?
Mathematics
2 answers:
stepan [7]3 years ago
6 0
Karen ran total 1 lap. Hope you get it.
MArishka [77]3 years ago
5 0
Jill ran 1 lap.
We have to work backwards for this question.
1 lap multiplied by 7 and then minus four to it in order to obtain the number of laps that Abby ran:
1 X 7=7
7-4=3
Since Karen ran 1/3 the number of laps that Abby ran.
3/3=1
Therefore, Karen ran 1 lap just like Jill.

Hope this helps!! (:
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At the Canada Open Tennis Championship, a statistician keeps track of every serve that a player hits during the tournament. The
kondaur [170]

Answer:

a) 54 mph to 144 mph

Step-by-step explanation:

We don't know the shape of the distribution, so we use Chebyshev's Theorem to solve this question. It states that:

At least 75% of the measures are within 2 standard deviations of the mean.

At least 89% of the measures are within 3 standard deviations of the mean.

At least eight-ninths of the player's serves.

8/9 is approximately 89%

So

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99 - 3*15 = 54

99 + 3*15 = 144

So the correct answer is:

a) 54 mph to 144 mph

8 0
3 years ago
First change to standard form of first order linear differential equation and then by finding the appropriate integrating factor
Leokris [45]

Answer:

Step-by-step explanation:

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xy' + y = lnx ; y(e)=1

To bring it to linear form we can divide the full equation by x

y'+\frac{y}{x} =\frac{ln x}{x}

This is of the form

y'+p(x) *y = q(x)

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5 0
3 years ago
Write 5/10 in three equivalent forms
krek1111 [17]

equivalent fractions are fractions which have the same value.

equivalent fractions all have the same simplified form

we can write equivalent fractions by multiplying both numerator and denominator by the same number. We can also write equivalent fractions by dividing both numerator and denominator by the same number

so 5/10

we can get the equivalent fractions by multiplying by a common number

when we multiply by 2

\frac{5}{10}* 2= \frac{5*2}{10*2} = \frac{10}{20}

when we multiply by 3

\frac{5}{10}* 3 = \frac{5*3}{10*3} = \frac{15}{30}

when we multiply by 4

\frac{5}{10} *4 = \frac{5*4}{10*4}  = \frac{20}{40}

the three equivalent fractions are

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5 0
4 years ago
Read 2 more answers
Ann made a scale drawing of a theater. The scale she used was 1 inch : 7 feet. The stage is
hjlf

Answer:

  • 4 in

Step-by-step explanation:

<u>Use ratios and solve:</u>

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4 0
3 years ago
Consider the expression 625(5xy)^-3/ (5x)^2 y^7
andre [41]
<span>625(5xy)^-3/ (5x)^2 y^7
     
             625 
= --------------------   /  25x^2y^7
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= 5/x^3y^3    / </span>25x^2y^7
= 5/x^3y^3   *  (1/ 25x^2y^7)
= 1 / 5x^5y^10

answer


         1
-----------------
   5x^5y^10
3 0
3 years ago
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