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baherus [9]
3 years ago
6

Lucita does the division problem 3.302 + -1.27, and gets -0.026. She doesn't understand this result because she had

Mathematics
2 answers:
emmasim [6.3K]3 years ago
8 0

Answer:

according to my calculation  Lucita's estimate is too low.

Step-by-step explanation:

because if we divide 3.302 by -1.27 we get -2.6 but lucita wrote 0.026

so it means that she wrote is so low it has to be bigger

hope i helped

can i have brainliest plss

oh guys

bezimeni [28]3 years ago
3 0

Answer:

The decimal point should be to the left of the 6.

Step-by-step explanation:

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a sample of unknown liquid has a volume of 12.0ml and a mass off 6g, what is its density? and how did you do the problem?
maw [93]

Answer:


Step-by-step explanation:

The equation for solving for density is:

Density = mass / volume

Then plug in the values:

Density = 6 g / 12 mL

Divide and don't forget the units!

Density = 0.5 g/mL


5 0
3 years ago
Find the total time.
Ad libitum [116K]

Answer:

A and D

Step-by-step explanation:

53 + 37 + 44 with the time standard being minutes

Find total time

___________________________________________

We have units of time and need to add them together, let's do as such.

53 + 37 + 44

134 minutes.

Let's try simplifying it into minutes to find how much we have :

134/60

2 hours and 14 minutes

Therefore A and D are correct.

3 0
3 years ago
Read 2 more answers
Gcf using prime factorization of 52 and 65
Leto [7]
<span>25: 2 × 2 × 13 65: 5 × 13</span>
3 0
3 years ago
The Information Technology Department at a large university wishes to estimate the proportion of students living in the dormitor
nadya68 [22]

Answer:

n=\frac{0.5(1-0.5)}{(\frac{0.05}{1.96})^2}=384.16  

And rounded up we have that n=385

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".  

The margin of error is the range of values below and above the sample statistic in a confidence interval.  

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

Solution to the problem

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 99% of confidence, our significance level would be given by \alpha=1-0.99=0.01 and \alpha/2 =0.005. And the critical value would be given by:

z_{\alpha/2}=-2.58, z_{1-\alpha/2}=2.58

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)  

And on this case we have that ME =\pm 0.05 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)  

We can use as an estimator for p \hat p =0.5. And replacing into equation (b) the values from part a we got:

n=\frac{0.5(1-0.5)}{(\frac{0.05}{1.96})^2}=384.16  

And rounded up we have that n=385

3 0
3 years ago
Please answer ASAP will mark brainliest if correct
Mekhanik [1.2K]

Answer:

3, 5, 7

Step-by-step explanation:

As per triangle inequality theorem:

  • <em>Any side of a triangle must be shorter than the other two sides added together</em>

Assume the sides are equal to 3 smallest odd numbers: 1,3 and 5

  • Then 1+3< 5 and it is against the above rule, so this is not correct

The next triple is: 3, 5 and 7

  • Then 3+ 5 > 7 and it is correct

So 3, 5, 7 is the combination of smallest odd numbers to make sides of a triangle

4 0
3 years ago
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