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Reptile [31]
3 years ago
9

briana records the race times for a track meet. she records for 5 groups of 4 student's each . how many observations does she ma

ke?
Mathematics
1 answer:
Taya2010 [7]3 years ago
7 0
She makes 20 observations in all, because there are 5 groups with 4 students in each group. 5x4=20
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alex41 [277]

The <em>correct answers</em> are:


A) Both can be solved by graphing;

C) Both can be solved by substitution; and

D) Both have solutions at the points of intersection.


Explanation:


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We can also solve the system by substitution. If we can get one variable isolated, we can substitute this into the other equation to solve.

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4 years ago
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Answer:

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just olya [345]
To model this situation, we are going to use the exponential function: f(t)=P(1+ \frac{r}{n} )^{nt}
where
P is the initial number of cars
r is the growing rate in decimal form 
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t is the time in years

To convert the growing rate to decimal form, we are going to divide the rate by 100%
r= \frac{12}{100}
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Since the growing rate is increasing quarterly, n=4. We also know that the initial number of cars is 920, so P=920. Lets replace all those values in our function:
f(t)=920(1+ \frac{0.12}{4} )^{4t}
f(t)=920(1+0.03)^{4t}
f(t)=900(1.03)^{4t}

We can conclude that:
Rate ---------> The quarterly rate of growth is 0.03 or 3%
Exponent --------> The compound periods multiplied by the number of years                                 is 4t
Coefficient--------> The initial number of cars serviced is 920
Base------> The growth factor is represented by 1.03
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3 years ago
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The balance after the grace period is $15,000. A payment of $5,000 is made on the
mario62 [17]

Answer:

the average daily balance is 500

Step-by-step explanation:

If a payment of 5,000 is made on the tenth day you can divide 5,000 by ten to get the amount payed everyday before hand. Once you do that you will end up with the answer of 500. Therefore the average daily balance is 500

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3 years ago
HELP ASSSAP WITH THIS QUESTION
bulgar [2K]
The answer is linear and increasing. look at it.... it goes up. 

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