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Kobotan [32]
3 years ago
5

Is the number below rational or irrational? Square root of V16

Mathematics
1 answer:
REY [17]3 years ago
4 0
Rational
i have to type more to post this
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If a+b =5, b+c=6, c+a=7. then find the value of a​
vlabodo [156]

Answer:

a = 3

Step-by-step explanation:

8 0
3 years ago
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In a random sample of 5 residents of the state of Texas, the mean waste recycled per person per day was 1.9 pounds with a standa
sammy [17]
<h2>Answer with explanation:</h2><h2 />

The confidence interval for population mean is given by :-

\overline{x} \pm\ t_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}

Given : Sample size : n= 5, since n<30 , so the test we use here is t-test.

Sample mean : \overline{x}=1.9\text{ pounds}

Standard deviation: \sigma=0.89\text{ pounds}

Significance level : 1-\alpha:1-0.99=0.01

By using the standard normal distribution table , the critical value corresponds to the given significance level will be :-

t_{n-1,\alpha/2}=t_{5-1,0.01/2}=t_{4,0.005}=4.604

Now, the 99% confidence interval for the mean waste recycled per person per day for the population of Texas will be :-

1.9\pm\ (4.604)\dfrac{0.89}{\sqrt{5}}\\\\\approx1.9\pm1.832\\\\=(1.9-1.832,1.9+1.832)=(0.068,\ 3.732)

Hence, the 99% confidence interval for the mean waste recycled per person per day for the population of Texas  = (0.068, 3.732)

5 0
4 years ago
Travis has a budget of $300 that he can spend on perennial flowers and at least 6 annual flowers. Perennial flowers are 18 dolla
boyakko [2]

Answer:

  • 18x + 15y ≤ 300
  • x ≥ 0; y ≥ 6

Step-by-step explanation:

Variables are defined in the problem statement.

  18x +15y ≤ 300 . . . . total budget

  y ≥ 6 . . . . . . . . . . . .  minimum number of annuals

  x ≥ 0 . . . . . number of perennials cannot be negative

This system of inequalities describes the situation.

6 0
3 years ago
Factor completely −5x2 + 10x − 25.
garri49 [273]
5(2x-7)

Hope this helps !

Have a great day!
3 0
3 years ago
When you add numbers with a common factor of 2, will the answer have a common factor of 2
zhannawk [14.2K]

Answer:

yes

Step-by-step explanation:

adding together even numbers will give an even result

6 0
3 years ago
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