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stealth61 [152]
3 years ago
10

there are $3.90 worth of nickles and quarters in a piggy bank. there are 6 more quarters than nickels. how many coins are in the

piggy bank
Mathematics
1 answer:
Murrr4er [49]3 years ago
4 0

Answer:

8 nickels and 14 quarters

Step-by-step explanation:

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Find the value of L. Perimeter = 20. Width is 6. So what is L? On a square
Rashid [163]

Well first of all, that's not a square.  On a square, all 4 sides are
the same, and the length is the same distance as the width.  If the
width of a square is 6, and all four sides are the same, then the
perimeter is (4 x 6) = 24. 

So the shape in your question may be a rectangle, but it's definitely
not a square one.

The perimeter is the distance an ant has to walk if you put him down
on one corner and he walks all the way around the shape until he gets
back to where he started from. 
That's the perimeter.

If you set the ant down on the corner of a rectangle, then he walks the
length, then the width, the the length again, then the width again, and
he's back where he started.

That was 2 lengths and 2 widths ... the perimeter of every rectangle.

Take 2 widths away from the perimeter, and you have 2 lengths left.  OK ?

You said that the width of your rectangle is 6.  Two widths is 12.
Take the 2 widths away from the perimeter, and you're left with (20 - 12) = 8.
But that's 2 lengths !
So the length is half of 8  =  4 .

8 0
3 years ago
Read 2 more answers
A gym has 8,700 people in 2010. Now it has 6,400 people. What is the percent of change?
Blizzard [7]
It decreased by 26%.
5 0
4 years ago
NEED ANSWERS ASAP, THANKS!
Kitty [74]

Answer:

range = 90

mean = 317.14

Step-by-step explanation:

range = higest - lowest value = 365 - 275 = 90

mean is avarage of all = sum of all/ 7 = 317.14

8 0
3 years ago
NASA is conducting an experiment to find out the fraction of people who black out at G forces greater than 6 6 . In an earlier s
Xelga [282]

Answer:

The sample size must be atleast 502 to have a margin of error of 0.03

Step-by-step explanation:

We are given the following in the question:

Proportion = 0.32

\hat{p} = 0.32

Level of significance = 0.15

Margin of error = 0.03

Formula for margin of error =

z_{stat}\times \sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

z_{critical}\text{ at}~\alpha_{0.15} = 1.44

We have to find the sample size such that the margin of error is atmost 0.03.

Putting values, we get,

z_{stat}\times \sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}\leq 0.03\\\\1.44\times \sqrt{\dfrac{0.32(1-0.32)}{n}}\leq 0.03\\\\\sqrt{n}\geq 1.44\times \dfrac{\sqrt{0.32(1-0.32)}}{0.03}\\\\\sqrt{n}\geq 22.39\\n\geq 501.3121\\\Rightarrow n\geq 502

Thus, the sample size must be atleast 502 to have a margin of error of 0.03 in approximation of proportion of people who would black out at 6 or more Gs.

3 0
3 years ago
In 2012, the world's largest pumpkin weighed 913 kilograms. An average sized pumpkin weighs 5000 grams. The 2012 world record pu
klemol [59]
905 more kilograms more than a average sized pumpkin.

6 0
4 years ago
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