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Scilla [17]
3 years ago
15

Hi Pls help me answer this question real quick!!!!

Mathematics
1 answer:
Mars2501 [29]3 years ago
8 0
B.

A cant be, because the square root of 3 isn't a rational number/perfect square.
C can't be because the square root of 5 isn't a rational number/perfect square.
D cant be because pi isn't a rational number.

However, B can be because the square root of 25 is a rational number/perfect square. Which is 5
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Simplify 7(2x+y)+6(×+5y)
iris [78.8K]

Simplify, <em>7(2x+y)+6(x+5y).</em>

<em>a:</em> <em>20x+37y</em>

<em> (7 • (2x + y)) +  6 • (x + 5y) </em>

<em>Step  2  : </em>

<em>Equation at the end of step  2  : </em>

<em>  7 • (2x + y) +  6 • (x + 5y) </em>

<em>Step  3  : </em>

<em>Final result : </em>

<h3><em> </em><em> 20x + 37y</em></h3>

Thanks,

<em>Deku ❤</em>

4 0
3 years ago
A random sample of 16 one-kilogram sugar packets is obtained and the actual weights of the packets are measured. The sample mean
elena55 [62]

Answer:

The 99% two-sided confidence interval for the average sugar packet weight is between 0.882 kg and 1.224 kg.

Step-by-step explanation:

We are in posession of the sample's standard deviation, so we use the student's t-distribution to find the confidence interval.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 16 - 1 = 15

99% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 35 degrees of freedom(y-axis) and a confidence level of 1 - \frac{1 - 0.99}{2} = 0.905([tex]t_{995}). So we have T = 2.9467

The margin of error is:

M = T*s = 2.9467*0.058 = 0.171

In which s is the standard deviation of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 1.053 - 0.171 = 0.882kg

The upper end of the interval is the sample mean added to M. So it is 1.053 + 0.171 = 1.224 kg.

The 99% two-sided confidence interval for the average sugar packet weight is between 0.882 kg and 1.224 kg.

3 0
3 years ago
I’m A Triangle, The Sum Of Any Two Side Lenghts, <br><br> Finish The Sentence
Alchen [17]
Equals the third side length
4 0
3 years ago
On which of these policies will an insurer pay if there’s a loss
Ierofanga [76]

Answer:

Fire & Auto

Step-by-step explanation:

5 0
3 years ago
What is the answer for -5x-4=?
slamgirl [31]
If you want to solve for x
-5x-4=?
add 4 to both sides
-5x=4+?
divide both sides by -5
x=(4+?)/-5
x=-(4+?)/5
3 0
3 years ago
Read 2 more answers
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