What is the Square root of 66 in radical form?
sqrt(66) = sqrt(2 x 3 x 11) =
sqrt(2) X sqrt(3) X sqrt(11) or
2^(1/2) X 3^(1/2) X 11^(1/2) = 66^(1/2)
Since 2.3. & 11 are all prime number , their square roots are Irrational. Hence sqrt(66) is also irrational .
How many years between 1964 to 2012?
There are 48 years between 1964 to 2012. This is because 2012-1964=48.
How do you make a 70 degree angle with a ruler and a compass?
In this simple construction, the horizontal and vertical lines are evident. The red line terminates at the middle of three closely spaced collinear points, which is equidistant from the other two. The red angle measures approximately 70.002°. Angles with values very close to 8, 38, 134, and 46 degrees are also formed in the same construction.
y = x - 4
x^(2) + y^(2) = 8
Hence
y^(2) = 8 - x^(2)
Square up the linear eq'n and substitute
Hence
y^(2) = ( x - 4)^(2)
NB Notice the RHS is wholly squared , not individual terms.
Substitute ; this eliminates 'y'
( x - 4)^(2) = 8 - x^(2)
Square out the brackets
x^(2) - 8x + 16 = 8 - x^(2)
Collect terms
2x^(2) -8x +8 = 0
Factor
2(x^(2) - 4x + 4) = 0
(x- 2)(x - 2) = 0
Hence x = 2 ( The 'x' coordinate) .
Substitute into either eq;n for 'y'
y = 2 - 4
y = -2
Hence
( x,y) = ( 2,-2) ; The point of contact of the tangent and the curve.
-2
What is 2 to the 3rd power times 2 to the 2nd power times 2 to the negative 1 power?
2^(3) X 2^(2( X 2^(-1)
Per the law of indices .
When the coefficient is the same , '2' in this case, you add the indices.
Hence
2^(3 + 2 + -1)
2^(5 - 1)
2^(4) = 16
Verification
2&(3) = 8
2^(2( = 4
2^(-1( = 1/2
Hence
8 x 4 X 1/2 =
32 x 1/2 = 16
NB Laws of indices/
When the coefficient is the same in ALL cases.
#1 a^(n) X a^(m) = a^(n+m) ; Add the indices
#2 a^(n) divide a^(m) = a^(n-m) ; Subtract the indices )
#3 [a^(n)]^(m) = a^(nm( ; 'nesting' multiply the indices.
NB you cannot use these laws for different coefficients
e.g. a^(n) X b^(n) NOT allowed/.
e.g.
2^(2) X 3^(2) is NOT [2x3] ^(2 + 2)
What is 2 to the negative 6th power as a fraction?
Oh, what a happy little question! When you have 2 to the power of -6, it means you're taking the reciprocal of 2 to the power of 6. So, 2 to the negative 6th power is 1 over 2 to the 6th power, which simplifies to 1 over 64. Just a little fraction painting to brighten your day!
What is 6 to the negative 4th power as a fraction?
Oh, what a happy little question! When we have a number raised to a negative power, we can simply move it to the denominator to make it positive. So, 6 to the negative 4th power is the same as 1 over 6 to the 4th power, which simplifies to 1 over 1296. Just a little math magic to brighten your day!
What is the largest area that you can have if the perimeter is 24 feet?
You get the largest area with a circle. Divide the perimeter by (2 x pi), then calculate the area with the formula pi x radius2.
You get the largest area with a circle. Divide the perimeter by (2 x pi), then calculate the area with the formula pi x radius2.
You get the largest area with a circle. Divide the perimeter by (2 x pi), then calculate the area with the formula pi x radius2.
You get the largest area with a circle. Divide the perimeter by (2 x pi), then calculate the area with the formula pi x radius2.
How do you convert 2 miles 327 yards to feet?
2 miles + 327 yards = 2*5280 + 327*3 = 10560 + 981 = 11541 feet
What direction does a y axis face?
Y Axis - Forward and Backward
X Axis - Left and Right
Z Axis - Physical UP and Down
Slope of 4x plus 2y equals 12?
4x + 2y = 12
Rearrange into straight line equation ( y = mx + c)
Where 'm' is the slope/gradient.
Hence
2y = -4x + 12
y = -2x + 6
Hence '-2' is the gradient /slope.
What do you understand by a variable?
A number that can vary.
Human height can vary between say 4 feet and 7 feet .
What is the answer -x-2 equals 1-2x?
-x -2 = 1 - 2x
Add 'x' to both sides ( preserve equality ; balance)
-2 = 1 - x
Add '2' to both sides
0 = 3 -x
Add 'x' to both sides
x = 3 The Answer !!!!!
NB When said as 'adding/subtracting etc., to both sides', this is to preserve equality (=), so the eq'n remains 'balanced', just like a weigh scales.
e.g. with numbers.
5 = 3 + 2 , however, 5 - 2 = 3 ( same difference!!!!!).
3×9= 27
1×27
Please there is your answer.
God bless you!
The ancient civilisations, 4000 years ago, Sumerians, calculated 'pi' to be 3.141592.....
The story goes ; A donkey on a tether ( radius) was driven around in a circle (Circumference) to drive water up from a well.
They noticed that however, long the tether (radius) was , the correspodning circle(circumference) was always in the same ratio. ; pi = 3.141592.....
This can be mathematically expressed as
Circumference is directly proportional to the diameter.
or
'C' is directly proportional to 'd '
This can be equated with a constant
C = k d
Algebraically rearranged as
k = C/d
Whatever the dimensions of a given circle were/are 'k', the constant, was always found to be 3.141592....
Much later after the Sumerians, the Classical Greeks, gave the name 'pi' to this constant. 'pi' being the lower case classical Greek letter 'p' and refers to **P**roportion.
Hence 'pi' , today is used as this constant of proportion for circles.
'pi' is an irrational number, which means in casual terms, the decimal digits go to infinity and there is no regular order in the decimal digits.
On 'Supa-Dupa' computers' pi' has been calculated to some 50 billion places and still going.
NB Remember the circle equations.
C = pi d
C = 2 pi r ( d = 2r)
A(area) = pi r^(2)
When learning circle calculations you are probably given pi as 3.14, or .3.1416. or 22/7, but these are only approximate values, and NOT exact values.
Hope that helps!!!!!
What is the rule to calculate the circumference of a circle?
Circumference equals the diameter multiplied to 'pi'.
Algebraically it is written as
C = pi d
NB 'pi' is an irrational number , of the value 3.141592.... Approximated to 3.14 or 3.1416
What is 4x-1 equals 9 is it an expression?
NO!!!
Because it is an equation, because it contains an 'equals(=)'.
A mathematical expression does NOT contain an 'wquals'.
Where did you fine a hypotenuse?
hypotenuse lit. 'stretching under'. It refers to how the hypotenuse "stretches under" the right angle. ( From Classical Greek).
It is the line opposite the right angle in a triangle.