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Yanka [14]
3 years ago
10

Which number is an irrational number

Mathematics
2 answers:
iragen [17]3 years ago
7 0

Square root of 15 because you don't know what know is going to go after it, unlike the others where you can guess the numbers that goes after it


Studentka2010 [4]3 years ago
3 0

Answer:

square root of 15

Step-by-step explanation:

an irrational number is a number that you cant write as a fraction. The square root of 15 is 3.87298335. This is a repeating decimal with no pattern so it is irrational because you cant write it as a fraction. Numbers like 1.25252525 is rational because it has a pattern and you can write it as a fraction.

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It always confuses me when they make me do the baby steps
fgiga [73]

A. Alright, we want to multiply one equation by a constant to make it cancel out with the second. Since the first equation has a "blank" y, let's multiply the first equation by <em>2</em>.

3x-y=0 → 2(3x-y=0) = 6x - 2y = 0

5x+2y=22


The answer for this part would be: 6x - 2y = 0 and 5x + 2y = 22


B. So now we combine them:

6x - 2y = 0

+ + +

5x + 2y = 22

= = =

11x + 0 = 22 ← The answer


C. Now that we have the equation 11x = 22, we solve for x

11x = 22 ← Divide both sides by 11

x = 2 ← The answer


D. Now that we have x=2, we plug that back in to 5x+2y=22 and solve for y:

5(2)+2y = 22

10 + 2y = 22

2y = 12

y = 6


<u>Therefore, the solution to this problem is x = 2 and y = 6</u>


5 0
3 years ago
A survey of 500 likely voters showed that 385 felt that the economy was the most important national issue. Find a point estimate
Dovator [93]

Answer:

Option B

Step-by-step explanation:

Given that a survey of 500 likely voters showed that 385 felt that the economy was the most important national issue.

Sample size n = 500

favor who feel the ecomomy is the most important national issue x= 385

Sample proportion = \frac{x}{n} \\=0.77

Sample proportion would be the point estimate for population proportion of voters who feel the ecomomy is the most important national issue.

Hence the point estimate (p-hat0 for p, the population proportion of voters who feel the ecomomy is the most important national issue

is 0.77

(option B)

4 0
3 years ago
An art studio charges a start-up fee to cover art supplies, plus an additional fee per class. The graph shows the total cost for
Studentka2010 [4]

Answer/Step-by-step explanation:

✔️The rate of change can be calculated using the coordinates of any two points on the graph. Let's use (2, 60) and (3, 75):

rate of change = \frac{y_2 - y_1}{x_2 - x_1} = \frac{75 - 60}{1} = \frac{15}{1} = 15

Rate of change (m) = 15

✅In the context of this situation, the rate of change can be interpreted to be the additional fee per class. Thus, an additional fee per class cost $15.

✔️Initial value is the same as the y-intercept.

To find the y-intercept (b), substitute m = 15, x = 2, and y = 60 into y = mx + b.

Thus:

60 = 15(2) + b

60 = 30 + b

60 - 30 = b

30 = b

b = 30

The initial value/y-intercept = $30

✅In this context, $30 is the start-up fee to cover art supplies.

5 0
3 years ago
A group of students want to make a flag. Someone want it to be a rectangle, some a kite, and others a rhombus. Can the crew make
g100num [7]

Answer:

yes the crew can make a flag using all three shapes

6 0
3 years ago
Lindsay is very excited to be getting a great deal on an iPad. It was originally $500 but she will only be paying $325. what per
Veseljchak [2.6K]
To find what she saved you need to subtract
500-325= 175
then take 175 divided by the original price (500) to get a percentage so
175÷500=0.35
0.35= 35%
so your answer is she saved 35%
6 0
3 years ago
Read 2 more answers
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