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Feliz [49]
3 years ago
12

Which number is irrational

Mathematics
2 answers:
Mumz [18]3 years ago
8 0
The answer to your question is D.
\sqrt{5}
Sergio [31]3 years ago
8 0

The answer is D

Hope this helps

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PLZ HELP ME 100 POINT AND BRAINEST Solve the Quadratic Equation X^2 = -8x -7
quester [9]

Answer:

B. \displaystyle -1, -7

Step-by-step explanation:

\displaystyle x^2 = -8x - 7 → x^2 + 8x + 7 \\ \\ x^2 + 8x + 7 \\ [x + 1][x + 7]; -1, -7 = x

I am joyous to assist you at any time.

6 0
3 years ago
A line has a slope of 3/5. It passes through (3,5) and (x,9). What is the value of x?
blagie [28]
This is in 2 point form
(y2-y1)=m(x2-x1)
(9-5)=3/5(x-3)
x=29/3
4 0
3 years ago
Natalie walk 3/5 mile and a 1/2 hour . how fast did she walk in in miles per hour?
Talja [164]
She walks 6/5 of a mile in 1 hour

So, she walks 1.2 miles per hour
7 0
3 years ago
An important factor in selling a residential property is the number of times real estate, agents show a home. A sample of 21 hom
Natalka [10]

Using the t-distribution to build the 99% confidence interval, it is found that:

  • The margin of error is of 3.64.
  • The 99% confidence interval for the population mean is (19.36, 26.64).

<h3>What is a t-distribution confidence interval?</h3>

The confidence interval is:

\overline{x} \pm t\frac{s}{\sqrt{n}}

In which:

  • \overline{x} is the sample mean.
  • t is the critical value.
  • n is the sample size.
  • s is the standard deviation for the sample.

The critical value, using a t-distribution calculator, for a two-tailed 95% confidence interval, with 21 - 1 = 20 df, is t = 2.086.

The other parameters are given as follows:

\overline{x} = 23, s = 8, n = 21

The margin of error is given by:

M = t\frac{s}{\sqrt{n}} = 2.086\frac{8}{\sqrt{21}} = 3.64

Hence the bounds of the interval are:

\overline{x} - M = 23 - 3.64 = 19.36

\overline{x} + M = 23 + 3.64 = 26.64

The 99% confidence interval for the population mean is (19.36, 26.64).

More can be learned about the t-distribution at brainly.com/question/16162795

#SPJ1

7 0
1 year ago
An astronaut was exploring the moon of a distant planet, and found some glowing goo at the bottom of a very deep crater. She bro
Soloha48 [4]

Answer:

after 1 hr = 20 after 2 hrs =<em> </em> 40 after 3 hrs = 80 160 n 3 hrs

8 0
3 years ago
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