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Neporo4naja [7]
3 years ago
14

How to do the problem

Mathematics
1 answer:
vichka [17]3 years ago
4 0
12.
1: n•n= n^2
2: n•(-2)= -2n
3: 2•n= 2n
4: 2•(-2)= -4
=n^2-2n+2n-4
= n^2-4
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How I do circumference and area
Artist 52 [7]
You multiply 3.14 by the diameter or 2 times the radius 
for area you do pi or 3.14*radius squared 
3 0
3 years ago
Kamil and Sean share some money in the ratio 3:5. Sean gets $56 more than Kamil. How much do they get each?
liq [111]
Let Kamil get x. Therefore Sean would get (x + 56).

Kamil and Sean are in the ratio:        3:5

That means:    x : (x + 56) = 3 : 5

x / (x + 56) = 3/5

5*x = 3*(x + 56)

5x = 3*x + 3*56

5x = 3x + 168

5x - 3x = 168

2x = 168

x = 168 / 2

x = 84

Therefore Kamil had, x = 84,  and Sean had (x + 56) = 84 + 56 =  140

Kamil had $84 and Sean had $140
3 0
3 years ago
A bicyclist races on a bicyclist with 13-inch-radius wheels. When she is traveling at a speed of 37 ft/sec, how many revolutions
drek231 [11]
Radius of a wheel = 13 inch
= 1.08333 ft
circumference of a wheel = 2×pi×r^2
= 2 × (22/7) × 1.08333^2 ft
= 2 × (22/7) × 1.1736 ft
= (44/7)×1.1736 ft
= 51.6384/7 ft
= 7.3769142857 ft
distance covered in one minute = 37 × 60 ft/min
= 2220 ft/min
now, revolution per minute = 2220 / 7.3769142857
= 300.93884
therefore her wheels are making 300.93884 revolutions per minute
8 0
3 years ago
What is the value of x (81) (7x+15)
scoray [572]

Answer:

9 if I am correct also I rounded to a whole number, am not sure

3 0
3 years ago
Answer the two questions! i’ll give brainliest
MrRa [10]

Answer:

<em>| In Terms of Pi π | </em>

<em>V = 6000 π m3</em>

<em>-----------------------</em>

<em>or</em>

<em>V = 18840 m3</em>

<em>-----------------------</em>

<em>| In Terms of Pi π | </em>

<em>V = 168 π m</em>

<em>------------------------</em>

<em>or</em>

<em>V = 527.78756580309 m3</em>

Hope this helps :)

<em>-ilovejiminssi ♡</em>

8 0
3 years ago
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