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3 years ago

8.12394 rational or irrational

Mathematics

1 answer:

igor_vitrenko [27]3 years ago

7 0

Answer:

rational

Step-by-step explanation:

if it does not terminate nor become periotic it is irrational other wise it is rational

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The student council is trying to select a musical artist to play at the annual school dance. They polled a random sample of 150

Zina [86]

Answer: d. 92

Step-by-step explanation: 150 time for equals 600. so all you gotta do is multiply 23 times 4

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3 years ago

Find the perimeter of the triangle whose vertices are the following, specified points in the plane.

hichkok12 [17]

Given:

The vertices of the triangle are (-10,-3), (1,4) and (-1,7).

To find:

The perimeter of the triangle.

Solution:

Distance formula:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Let the vertices of the triangle are A(-10,-3), B(1,4) and C(-1,7).

Using distance formula, we get

$AB=\sqrt{(1-(-10))^2+(4-(-3))^2}$

$AB=\sqrt{(1+10)^2+(4+3)^2}$

$AB=\sqrt{(11)^2+(7)^2}$

$AB=\sqrt{121+49}$

$AB=\sqrt{170}$

Similarly,

$BC=\sqrt{\left(-1-1\right)^2+\left(7-4\right)^2}=\sqrt{13}$

$AC=\sqrt{\left(-1-\left(-10\right)\right)^2+\left(7-\left(-3\right)\right)^2} =\sqrt{181}$

Now, the perimeter of the triangle is

$Perimeter=AB+BC+AC$

$Perimeter=\sqrt{170}+\sqrt{13}+\sqrt{181}$

$Perimeter\approx 13.038+3.606+13.454$

$Perimeter=30.098$

Therefore, the perimeter of the triangle is 30.098 units.

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3 years ago

Dennis went cross-country skiing for 6 hours

Ivanshal [37]

Dennis fell off a cliff and underwent surgery for his broken penis. i can’t answer this

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3 years ago

A hotel has $504 to buy new pillows. If the cost of each pillow is $6, how many pillows will the hotel be able to buy? A) 78 B)

Naddik [55]

Hello there!
You can use the equation:
504 ÷ 6
84
The hotel can buy 84 pillows.
Hope this helped! :D

4 0

3 years ago

Read 2 more answers

A professor teaches a certain section of material using a lot of examples with sports and cars to illustrate. He is concerned th

ser-zykov [4K]

Answer:

Step-by-step explanation:

Let X represent for males and Y for females

Given that

Group Group One Group Two

Mean 84.00 78.00

SD 4.00 8.00

SEM 1.26 2.53

N 10 10

SEM is calculated as $\frac{s}{\sqrt{n} }$ for each group

$H_0: \bar x = \bar y\\H_a: \bar x \neq \bar y$

(Two tailed test at 5% significance level)

$t = 2.1213\\ df = 18\\ standard error of difference = 2.828\\p=0.0480$

Since p <0.05 we reject H0 and there is significant difference between the groups.

A.Exam scores were significantly higher in the male group, t(18) = 2.83, p < .05B

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3 years ago