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svetlana [45]
3 years ago
6

Is the following number rational or irrational ? pi * sqrt(4)

Mathematics
1 answer:
garik1379 [7]3 years ago
3 0

Answer:

irrational

Step-by-step explanation:

pi is irrational, so even thought sqrt(4) is rational, this product is irrational.

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Ted is constructing an equilateral triangle. He draws a segment with his straightedge and labels the endpoints A and B. He then
gladu [14]

Answer:

Step-by-step explanation:

Keep the same compass opening, place the compass point on B, and draw a circle.

3 0
3 years ago
For which equations are in the solution for x the same number? 15 – х = -3<br> 3
Norma-Jean [14]

Answer:

Step-by-step explanation:

First equation:

          15 - x = - 3

           -x = - 3 - 15

          -x  =  -18  (now negative signs on b.s cut eachother)

            [x  =  18]

Second equation :

         15 - x = 3

          -x = 3 - 15

          - x = -12 ( now negative sign on b.s cut eachother)

            [x = 12]

so x = 18 and x = 12 are not same

6 0
3 years ago
The radius of a 12 inch right circular cylinder is measured to be 4 inches, but with a possible error of ±0.2 inch. What is the
GuDViN [60]
Given:
r = radius = 4
h = height = 12
dr = error in radius = 0.2

What we want to find
dV = error in volume

Use the derivative to find the differential dV
V = pi*r^2*h
dV/dr = d/dr[ pi*r^2*h ]
dV/dr = 2pi*r*h
dV = 2pi*r*h*dr
dV = 2pi*4*12*0.2
dV = 19.2pi

So if the error in measuring the radius is +-0.2 inches, then the error in the cylinder volume is +-19.2pi cubic inches (we either measure the volume to be 19.2pi cubic inches too big, or 19.2pi cubic inches too small)

----------------------------------------------------------------------------------

Final Answer: Plus or minus 19.2pi cubic inches

Note: your teacher may want you to drop the "plus or minus" part
5 0
3 years ago
2. You were 22 inches tall at birth, and 48 inches tall on your 8th birthday.
Leno4ka [110]

Answer:

3.25

Step-by-step explanation:because you have to divide the years with the inches so in each year i would grow about 3.25 inches

6 0
3 years ago
5x + 3y = -2<br> 3x + 2y = -1
Effectus [21]

Answer:

(-1,1)

Step-by-step explanation:

5x+2y= -2,  x= -1/3 - 2/3y

5( -1/3 - 2/3y) +3y= -2

y= 1

x= -1/3 - 2/3 × 1

x= -1

7 0
3 years ago
Read 2 more answers
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