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Tresset [83]
3 years ago
6

Jason earned scores of 90 points, 82 points, 95 points, and 86 points on four tests. What is the lowest score he can get on the

fifth test and still finish with an average score of 90 points?
95 points
96 points
97 points
98 points
Mathematics
2 answers:
Tatiana [17]3 years ago
8 0
Hi, the answer is 97 points. I hope this helps.
azamat3 years ago
8 0

Answer:

97 points

Step-by-step explanation:

Given,

His scores, in first test = 90 points,

In second test = 82 points,

In third test = 95 points,

In fourth test = 86 points,

Let he scores x points on the fifth test,

Thus, the total sum of the scores in five tests = 90 + 82 + 95 + 86 + x

= 353 + x

Also, The Average scores in these five test = 90

We know that,

\text{Average score}=\frac{\text{Total sum of the scores}}{\text{Total number of tests}}

Here, total number of tests = 5,

90=\frac{353+x}{5}

450=353+x\implies x = 450-353=97

Hence, the lowest score he can get on the fifth test and still finish with an average score of 90 points is 97 points.

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Mazyrski [523]

Answer:

hello, This can be solved using your standard rise over run slope calculation.  Think of the number of years after 1990 as your input variable.  2007 would be 17 years after 1990, so the "y" variable would be 17.  This is your "run", and it goes in the denominator of your slope calculation.  Then the difference between the 2007 population and the 1990 population would be the "p" variable difference, the "rise", which is 92500.  Dividing, you will get 5441.17.  Since we're talking about humans, we can't have a decimal, so let's round up to 5442.

 

Using the slope-intercept form of a linear equation (y = ax + b), we will say that p = 5442y + 123000.  Do you know why we add the 123000?  It's because that's the starting value, which is equivalent to the "intercept" in the slope-intercept form.

 

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Step-by-step explanation:

6 0
3 years ago
Barbara, Mark, and Carlos participated in the third heat of “The Big Race”. Barbara thought she could win with a 3 meter head st
steposvetlana [31]
Distance to travel = 20 m.
Let us determine the time, t, that each participant took to complete 20 m.

Barbara:
Average speed = (3 m)/(2 s) = 1.5 m/s
t = 20/1.5 = 13.3 s

Mark:
t =  5 s

Carlos:
y = x + 1
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Therefore
t =x = y - 1 = 20 - 1 = 19 s

Summary:
Barbara:  13.3 s
Mark:       5 s
Carlos:     19 s

Answer:
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Answer:

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Step-by-step explanation:

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3 years ago
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