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Tcecarenko [31]
2 years ago
6

What is the value of the numberical expression 5/8 - 5/12 (3 - 1/4) + 2/3? please show work

Mathematics
1 answer:
BaLLatris [955]2 years ago
6 0
1st perinthesis: 3/4 - 1/4 = 2/4 = 1/2
15/24 - 10/24 =5/24
5/24(1/2) = 5/48
5/48 + 32/48 = 37/48
so the answer is 37/48
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the town of Maxcell increased its annual budget from $1,300,000 to $1,500,000. Find the percent increase in the budget.
Sav [38]
1300000*x=1500000 |:1300000
X=1.15

≈15%
8 0
3 years ago
What is the next fraction in this sequence? 1/74, 1/37, 2/37, 4/37
iogann1982 [59]
Doubles each times

so 4/37 times 2/1=8/37 which is the next term
7 0
2 years ago
Solve 2x - 3y - 11 3x + 3y - 9 by elimination. Express your answer as an ordered pair.​
MaRussiya [10]

Answer:

x= 4, y = -1

Step-by-step explanation:

2x-3y=11

3x+3y=9

do addition and you should get

5x=20

x=4

plug in x into any equation

12+3y=9

3y= -3

y=-1

5 0
2 years ago
You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable preliminary estim
pogonyaev

Answer:

n=\frac{0.5(1-0.5)}{(\frac{0.025}{1.28})^2}=655.36  

And rounded up we have that n=656

Step-by-step explanation:

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 80% of confidence, our significance level would be given by \alpha=1-0.80=0.20 and \alpha/2 =0.10. And the critical value would be given by:

z_{\alpha/2}=\pm 1.28

Solution to the problem

The margin of error for the proportion interval is given by this formula:  

ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}    (a)  

Since we don't have prior info for the proportion of interest we can use \hat p=0.5 as estimator. And on this case we have that ME =\pm 0.025 and we are interested in order to find the value of n, if we solve n from equation (a) we got:  

n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}   (b)  

And replacing into equation (b) the values from part a we got:

n=\frac{0.5(1-0.5)}{(\frac{0.025}{1.28})^2}=655.36  

And rounded up we have that n=656

5 0
3 years ago
0 .17 as a fraction​
valentina_108 [34]
0.17 as a fraction would be 17/100
7 0
3 years ago
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