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Algebra
The use of letters to substitute unknown numbers to form an equation. Solve the equation to get the unknown number using different methods such as simultaneous equations and more.
227,579 Questions
There is no last digit of Pi, (π). It is an irrational number which means it goes on forever.
Pi (approx 3.1416) doesn't have a last digit because it is irrational (and coincidentally, transcendental).
That means, basically, the decimal form of pi extends infinitely past the decimal point and so you will never get to "the last digit of pi".
What formulas use Pi in the equation?
C = pi d
C = 2 pi r
A = pi r^(2)
Vol(sphere) = ( 4/3) pi r^(3)
A(Sphere) = 4 pi r^(2)
Vol(Cylinder) = pi r^(2) h
A(Cyl) = 2pi r h + + 2 pi r^(2) =2 pi r ( h + r)
It is a linear equation in two variables, x and y. Any point on the line defined by the equation will satisfy the equation and conversely, any ordered pair that satisfies the equation will represent a point, in the Cartesian plane, will be on the line.
show me how to get the answer
Yes,
All multiples of an even number are themselves even.
4 is an even number, so its multiples are all even.
How do you write 630 with prime numbers and exponents?
First you separate it into prime factors (start looking for small factors, such as 2, 3, 5). Then, you combine the factors with exponents.
The area of a circle with a radius of 10 cm .?
A = pi r^(2)
pi = 3.14
r = 10
Substitute
A = 3.14 X 10^(2)
A = 3.14 X 100 cm^(2)_
A = 314.0 cm^(2)
What is the unit dm3 a measurement of?
'dm^(3)' is a measure of liquid volume.
'dm^(3( ' means decimetres cubed.
It is the same volume as litres.
1 dm^(3) = 1 litre.
It is used in chemistry labs. when completing volumetric analysis.
The sum of two numbers is 25 while their difference is 1 What are the two numbers?
Let the number be 'm' & 'n'
m + n = 25
m - n = 1
Add the two eq'ns.
2m = 26
m = 26/2 = 13
Hence n = 12
its 4x +7.....since the 7 doesn't have an x like the 4 you can't add them together..:D
What is 2x cubed minus 10x squared minus 12x?
2x^(3) - 10x^(2) - 12x
'2' and 'x' are common factors , so take them out.
Hence
2x(x^(2) - 5x - 6)
Factor inside the brackets .
2x(x - 6)(x + 1)
Done !!!!
How do you factor x cubed minus x squared minus 12x?
x^(3) - x^(2) - 12x
'x' is a common fractor ' tsker it out.
Hence
x(x^(2) - x - 12)
Factor inside the brackets /
x(x - 4(x + 3)
Done!!!!!
The inverse of 23 depends on what type of inverse you mean:
-
Multiplicative inverse (reciprocal): \(\frac{1}{23}\)
-
Additive inverse: \(-23\)
Usually, when asked for the inverse of a number in mathematics, the answer is its reciprocal: \(\boxed{\frac{1}{23}}\).
For more answers, visit [Q Answers] urlkub.co/NfY5qX
What is the sum of angles in a 50-sided polygon?
1sr find the EXTerior Angle. 4
EXT ANG = 360 / 50
EXT Ang = 36/5 = 7.2
Hence
Int Ang = 180 - 7.2 = 172.8.
Since there are 50 sides there are 50 interior angles. at 172.8 each
So sum of interior angles is 50 X 172.8 = 8640 degrees.
NB
Remember the table.
Sum of interior angles.
3 sides = 180
4 sides= 360
5 sides = 540
et seq/
For each additional side add 180 degrees.
-2x plus 3y equals -7 3x plus y equals 16?
-2x + 3y = -7
3x + y = 16
simultaneous equations.
Elimination a letter. Arbitrarily select 'y'
Hence multiply the bottom eq'n by ' -3'
Hence
-2x + 3y = -7
-9x - 3y = -48
Add the eq'ns/
-11x = =55
x = -55/-11 = 5
When x = 5 , substitute into either eq'n for 'y'
-2(5) + 3y = -7
-10 + 3y = -7
3y = 3
y = 1
Hence answer in ( x,y) fpr, is ( 5,1).
