Answer:
what??
Step-by-step explanation:
The amount of money each of Mr Mokwebo 's two sons; Tokelo and Refentse will get is R116 and R95 respectively.
<h3>How to write and solve equation:</h3>
- Amount needed to buy chocolate = R253
- Tokelo's money = x
- Refentse's money = x - 21
Total amount needed = Tokelo's money + Refentse's money
253 = x + (x - 21)
253 = x + x - 21
253 = 2x - 21
253 - 21 = 2x
232 = 2x
divide both sides by 2
x = 232/2
x = 116
Therefore,
Tokelo's money = x = R116
Refentse's money = x - 21
= 116 - 21
= R95
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<span>2/3 or 0.66666
This is a sum of an infinite series problem.
A sequence of 1 will happen with a probability of 0.5
A sequence of 3 will happen with a probability of 1/2^3, 1/8, = 0.125
In general we have an infinite series of
1/2^1 + 1/2^3 + 1/2^5 + ... + 1/2^(2n-1) where n >= 1
The sum of such a series with a constant ratio between sequential terms is
S = s1/(1-r)
where
s1 = first term in the series
r = ratio between terms.
The value for s1 = 0.5 as shown above and the 2nd term is 0.125. So
r = 0.125 / 0.5 = 0.25
And the sum of the infinite series is
S = s1/(1-r)
S = 0.5/(1 - 0.25)
S = 0.5/0.75
S = 2/3
S = 0.666..66
So the probability of the first head coming up in an odd number of tosses is 2/3, or 66.6%</span>
Answer:
Step-by-step explanation:
y = mx + b
slope(m) = 1/9
y int (b) = 8.....or (0,8)
y = 1/9x + 8.....this is ur equation
ur x intercept is : (can be found by subbing in 0 for y
0 = 1/9x + 8
-1/9x = 8
x = 8 * -9
x = - 72....or (-72,0)
Answer:
Use the distance formula and the features with the definition of parabola unless you know the derived equation.
Directrix is the line on the other side of the focus from vertex. Directrix is x=8, for the general point (8,y). Parabola is the general point (x,y).
Distance from parabola to focus equals distance from parabola to directrix.
y2=-32X
x=1/x=y2
