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Sergeu [11.5K]
3 years ago
13

Jo says she can find the percent equivalent of 3/4 by multiplying the percent equivalent of 1/4 by 3.how can you use a percent b

ar model to support this claim
Mathematics
1 answer:
WINSTONCH [101]3 years ago
5 0
  The percent equivalent to 1 / 4 = 25 %.
  The percent equivalent to 3 / 4 = 75 %.
   25 %  x  3  = 75 %   ( correct )
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Find the height, please! need asap
sp2606 [1]

Answer:

Height = 8 cm

Step-by-step explanation:

Volume of cylinder = π×r²×h

288π = π × 36 × h

(Divide both sides by π)

288 = 36 × h

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3 years ago
A party rental company has chairs and tables for rent. The total cost to rent 5 chairs and 3 tables is $31.the total cost to ren
san4es73 [151]

Answer:

$1.25 & $10.25

Step-by-step explanation:

Let c be the cost of renting one chair and t be the cost of renting table. We're given two equations:

#1. 5c + 3t = 37

#2. 2c + 6t =64

We have a system of equations. Using our system of equations calculator, we can solve this problem any of 3 ways below:

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6 0
2 years ago
Maggie is building bird houses for all of her friends. she has 77.5 feet of wood planks. She makes 5 bird houses and has 12 feet
sladkih [1.3K]

Answer:

13.1 FEET OF WOOD FOR EACH HOUSE

Step-by-step explanation:

77.5-12=65.6

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2 years ago
What is the standard deviation of the data set? Round to the nearest tenth if needed. 2, 4, 7, 8, 9
barxatty [35]

Hiiiiiiii, okay here's the full- explanation for you, so here's the final answer. The explanation of how i got the answer is also below! Hope this helped you!!

Answer:

2.9

Step-by-step explanation:

First the mean or average = sum / data points (or N) = (2 + 4 + 7 + 8 + 9) / 5 = 6  

Now we take each of the individual values subtract the mean, and then square them, and add it all up.  

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Then we divide this by degrees of freedom = N - 1 to find the sample standard deviation. Note that this is different from the population standard deviation, where we would just divide N, but we use this because our data set is small, like less than 30 points.  

34 / (N - 1) -----> = 34 / (5 - 1) = 8.5  

Now, this is the variance, so we take the square root of the variance to get the sample standard deviation:  

√(8.5) = 2.9 (rounded to 1 decimal place)  

Note that scientific calculators, even my $20 version can do these kind of statistics calculations. Just enter the data set as a table of values in statistics mode, and press a few buttons, you're done!

6 0
3 years ago
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