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3 years ago

To which sets of numbers does π belong?

Mathematics

2 answers:

atroni [7]3 years ago

4 0

Pi belongs to irrational numbers.

seropon [69]3 years ago

3 0

Pi comes from irrational numbers

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Solve -4x – 8y = -48<br> 8x + 3y = -34.

Likurg_2 [28]

Answer:

x= -1/2 and -32

y = -10

Step-by-step explanation:

1) 2(-4x-8y)= (-48)2

8x+3y =-34

*to create a way to cancel out the x*

2) -8x-16y= -96

8x+3y= -34

*add them

-8x +8x =0

-16y + 3y = -13y

-96+ -34= -130

3) -13y =-130

isolate y

4) y = -10

*plug in* to find x into both original equations*

5) 8x + 3(-10) = -34. -4x-8(-10)= -48

*follow order of operations to solve for x

6) 8x -30 =-34. -4x +80 = -48

7) 8x =-4. -4x =128

8) x= -1/2. x = -32

4 0

3 years ago

A building engineer analyzes a concrete column with a circular cross section. The circumference of the column is 18 \pi18π18, pi

katrin [286]

The area of the cross section of the column is $18 \pi \ m^2$

Explanation:

Given that a building engineer analyzes a concrete column with a circular cross section.

Also, given that the circumference of the column is $18 \pi$ meters.

We need to determine the area of the cross section of the column.

The area of the cross section of the column can be determined using the formula,

$Area= \pi r^2$

First, we shall determine the value of the radius r.

Since, given that circumference is $18 \pi$ meters.

We have,

$2 \pi r=18 \pi$

$r=9$

Thus, the radius is $r=9$

Now, substituting the value $r=9$ in the formula $Area= \pi r^2$ , we get,

$Area = \pi (9)^2$

$Area = 81 \pi$

Thus, the area of the cross section of the column is $18 \pi \ m^2$

5 0

3 years ago

Consider the graph of the line of best fit, y = 0.5x + 1, and the given data points.

Georgia [21]

Which is the residual vaulewhen x=2
The answer would be -1

5 0

3 years ago

Read 2 more answers

Simplify 3(12 - 8) + 5

lukranit [14]

Answer:

3(4) + 5

Step-by-step explanation:

Use BIDMAS (Brackets, indicies, division, multiplication, addition, subtraction.)

6 0

2 years ago

Read 2 more answers

Without working out the multiplication, which product is larger, why? 3 × 1/5 or 3 × 1/10 A) 3 × 1/5 because 1/5 is less than 1/

sp2606 [1]

The answer to that question is b

6 0

3 years ago