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makkiz [27]
3 years ago
13

you bought a 7 notebooks at the school supply store cost $4.76 what is the unit rate explain how you determined your answer use

words numbers and or symbols in your explanation. how much would it cost to purchse 3 of these notebooks
Mathematics
1 answer:
Contact [7]3 years ago
6 0
You paid $4.76 total for 7 notebooks. To figure out how much each individual notebook cost, you divide the total cost by the number of things you bought, so Cost of One Notebook = Total Cost of Notebooks / Number of Notebooks = $4.76 / 7 = $0.68 This is the unit rate. To buy three notebooks, you just calculate the total cost of three notebooks at this price point, so Cost of Three Notebooks = Cost of One Notebook * 3 Notebo0ks = $0.68 * 3 = $2.04
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The 10 participants in an experiment had the following reaction times ( in milliseconds ) : 778,783,784,786,790,804,807,810,819,
Nata [24]

Answer:

Mean. It includes all data points.

Step-by-step explanation:

-We first need to calculate the mean, median and mode then compare our values:

#Mean:

\bar x=\frac{1}{n}\sum{x_i}\\\\=\frac{1}{10}\sum{778+783+784+786+790+804+807+810+819+823}\\\\=\frac{1}{10}\times \\\\=798.40

#The median is the middlemost data point in a lsit data:

778,783,784,786,790,804,807,810,819,823

-Since our data points is an even number, the median number is calculated as:

median=\frac{1}2}\sum{5^{th}+6^{th}}\\\\=0.5[790+804]\\\\=797.00

#Mode is the data point with the highest frequency:

-Since there's no number appearing more than once, our set has no mode.

#Since our data set has no outliers and is not a skewed distribution, the mean will be the best measure as it includes all data points

8 0
3 years ago
30 POINTS.<br> Please simplify this with all steps<img src="https://tex.z-dn.net/?f=%28%20%5Cfrac%7B5i%5E3t%5E4%7D%7B7%7D%29-2%2
lesantik [10]
Simplify the following:
(5 i^3 t^4)/7 - 2
i^3 = i^2×i = (-1) i = -i:
(5×-i t^4)/7 - 2
Put each term in (5 (-i) t^4)/7 - 2 over the common denominator 7:
(5 (-i) t^4)/7 - 2 = (-5 i t^4)/7 - 14/7:
(-5 i t^4)/7 - 14/7
(-5 i t^4)/7 - 14/7 = (-5 i t^4 - 14)/7:
Answer:  (-5 i t^4 - 14)/7
8 0
3 years ago
Read 2 more answers
Working together a small pipe and large pipe can fill a big pool in 6 hour. It takes the smaller pipe 5 hours longer than the la
kari74 [83]

The time taken for the smaller pipe to fill the pool by itself is 15.71 hours

<h3>Rate of work</h3>

  • Time taken for both pipes = 6 hours
  • Time taken for long pipe = x
  • Time taken for small pipe = x + 6

  • Rate of work of both pipes = 1/6
  • Rate of work of long pipe = 1/x
  • Rate of work of small pipe = 1/x + 6

1/6 = 1/x + 1/(x+6)

1/6 = (x+6)+(x) / (x)(x+6)

1/6 = (x+6+x) / x²+6x

1/6 = (2x+6)(x² + 6x)

  • cross product

1(x² + 6x) = 6(2x+6)

x² + 6x = 12x + 36

x² + 6x - 12x - 36 = 0

x² - 6x - 36 = 0

  • Using quadratic formula

x = 9.71 or -3.71

The value of x cannot be negative

Therefore, the

Time taken for long pipe = x

= 9.71 hours

Time taken for small pipe = x + 6

= 9.71 + 6

= 15.71 hours

Learn more about rate of work:

brainly.com/question/24900258

#SPJ1

4 0
2 years ago
Which number shows 235,375 rounded to the nearest hundred thousand?
dybincka [34]
A. 200,000. Look at the place value for hundred thousand; the number in it is 2. The number in the place value after it is a 3, and that does not round up.
7 0
4 years ago
Find the value of "y" log(4y+1)=log(y-7)-2log2​
Zanzabum

Answer:

y = -8/15

Step-by-step explanation:

log (4y + 1) = log (y - 7) - 2log2

log (4y + 1) = log (y - 7) - log2² (power law)

log (4y + 1) = log [(y - 7)/4]

4y + 1 = (y - 7)/4 (remove log)

4(4y + 1) = y - 7

16y - y = -8

15y = -8

y = -8/15

3 0
4 years ago
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