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4 years ago

Approximate the value of 5 pie

Mathematics

2 answers:

mote1985 [20]4 years ago

8 0

Pi is equal to 3.14159265358979... (and so on, because it's an irrational number).

We can see that pi is a little bit more than 3. Multiplying this times 5 gives a lil bit more than 15.

D

Marina CMI [18]4 years ago

5 0

Slightly more than 15

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Find a point on the y-axis that is equidistant from the points (8, −8) and (1, 1).

artcher [175]

$\text{We know that any point on the y-axis is of the form (0, y),}\\
\text{because on y-axis we have x=0.}\\
\\
\text{So let (0, y) be the point on the y-axis that is equidistance from}\\
\text{the points }(8,-8) \text{ and }(1,1)\\
\\
\text{so using the distance formula, we have}\\
\\
\text{Distance between (0, y) and }(8,-8)=\text{Distance between (0,y) and }(1,1)\\
\\
\Rightarrow \sqrt{(0-8)^2+(y-(-8))^2}=\sqrt{(0-1)^2+(y-1)^2}$

$\Rightarrow \sqrt{64+(y+8)^2}=\sqrt{1+(y-1)^2}\\
\\
\text{Squaring both sides, we get}\\
\\
(\sqrt{64+(y+8)^2})^2=(\sqrt{1+(y-1)^2})^2\\
\\
\Rightarrow 64+(y+8)^2=1+(y-1)^2\\
\\
\Rightarrow 64+(y^2+16y+64)=1+(y^2-2y+1)\\
\\
\Rightarrow y^2+16y+128=y^2-2y+2\\
\\
\Rightarrow y^2+16y-y^2+2y=2-128\\
\\
\Rightarrow 18y=-126\\
\\
\Rightarrow y=\frac{-126}{18}\\
\\
\Rightarrow y=-7$

So the point on the y-axis that is equidistant from the points (8,-8) and (1,1) is: (0,-7)

3 0

4 years ago

Which pair of numbers does 72 fall between

Svetach [21]

The pair of numbers that fall between 72 are 71 and 73.

4 0

3 years ago

Gio hiked six miles in two hours. At this rate, what is the total number of miles Gio could hike in nine hours?

Anestetic [448]

Answer:

27 miles

Step-by-step explanation:

3 mph is rate speed,

3 x 9 = 27 miles

3 0

3 years ago

Read 2 more answers

3a^2+4b^2 for a=2 and b=3

blagie [28]

First write the question:
3a^2 + 4b^2

Substitute:
3 x (2^2) + 4 x (3^2)

Simplify:
(3 x 4) + (4 x 9)

Simplify again:
12 + 36

Answer:
48

Hope it helped :)

4 0

3 years ago

Read 2 more answers

Y=4x and x+y=5 6-2 substitution

fiasKO [112]

Answer:

x=1, y=4. (1, 4).

Step-by-step explanation:

y=4x

x+y=5

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x+4x=5

5x=5

x=5/5

x=1

y=4(1)=4

5 0

3 years ago