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soldier1979 [14.2K]
3 years ago
15

2 oranges cost R1,45.how much will 12 oranges cost?​

Mathematics
1 answer:
xxMikexx [17]3 years ago
7 0

Answer:

R8.70

Step-by-step explanation:

2 oranges = R1.45

1 orange = 1.45 ÷ 2 = 0.725

12 oranges = 0.725 x 12 = 8.70

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Let X denote the time from the present until the stock market hits 25,000. If X ≤ 1, you win $10, 000X. If X > 1, you win not
const2013 [10]

Answer: $6321

Step-by-step explanation:

Expected value is given as exactly what you might think it means intuitively, the return you can expect for some type of action.

The basic expected value formula is the probability of an event multiplied by the amount of times the event happens:(P(x) * n).

he formula for the Expected Value for a binomial random variable is:

P(x) * X.

X is the number of trials and P(x) is the probability of success.

The formula for calculating the Expected Value where there are multiple probabilities is:

E(X) = ∑X * P(X)

The equation is basically the same, but here you are adding the sum of all the gains multiplied by their individual probabilities instead of just one probability.

Calculating the expected value of winning as follows:

Given,

Fx= e^-x, x is greater or equal to 0

Now, P less than or equal to zero =

[-e^-x] ^1

e^-0 - e^-1

= 1 - e^-1

= 0.6321

and P(x>1) = 1-0.6321= 0.3679

Therefore,Let y= amount of winnings.

Based on the above given information,

y= $10000 0

P(y)= 0.6321 0.3679

The expected value of winning:

E(y) = ΣyP(y)

E(y) = 10000 × 0.6321 + 0 × 0.3679

E(y) = $6321

Therefore, the expected value of winning is $6321

5 0
3 years ago
Find the zeros of f(x) = x^2+5x-6.<br> A. {-2,3}<br> B. {-6,1}<br> c. {-2,-3}<br> D. {-6,-1}
Arisa [49]

Answer:

x^2+5x-6

a = 1  b = 5 and c = -6

Using the quadratic formula:

x = [-5 +- sq root (25 -4 * 1 *-6) ] / 2 * 1

x = [-5 +- sq root (49)] / 2

x = [-5 +- 7] / 2

x1 = 1

x2 = -6

Step-by-step explanation:

7 0
3 years ago
Don’t get this at all??
DENIUS [597]
Are you sure your in high school, also it's answer #3.
6 0
2 years ago
Read 2 more answers
Guided Practice
irga5000 [103]
It’s choice A! :) y= -x - 6
3 0
2 years ago
Read 2 more answers
2(1/3x-5)=5/3x-11<br> can somebody help me ASAP
maw [93]

Answer: x=1 my friend

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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