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Paha777 [63]
3 years ago
13

Is the sum of a positive number and a negative number always negative?

Mathematics
1 answer:
dybincka [34]3 years ago
7 0
The sum of a positive number and a negative number are not always negative 
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Plsssss helppp im so lost on this
Alik [6]

Answer:

2n-4>1n+3

Step-by-step explanation:

So basically 2 times a number go together because it means its multiplying and the greater sign is > and then 1 is multiplying with n so its 1n and then you just add 1

3 0
2 years ago
PLSS HELPP 25 POINTS AND BRAILIEST
Salsk061 [2.6K]

Answer:

\Large \boxed{\sf 136 \ m^2}

Step-by-step explanation:

Surface area of this shape = area of 2 triangles + area of 3 rectangles

(6 \times 4 \times 0.5 \times 2 )+(7 \times 5 \times 2+7 \times 6)=136

7 0
2 years ago
Last year 64 new houses were built in the neighborhood so far this year 5/8 of them have been sold. How many new houses have bee
Mariana [72]

5/8 of the total has been sold, so we just do 64*5/8=40 houses that had been sold this year. Hope this helped!

7 0
3 years ago
1.<br> Find the product of -12 and -6.
Alborosie

Answer:

72

Step-by-step explanation:

Multiply. Note that when you multiply two negative numbers, the answer will be positive.

Combine:

-12 * -6 = 12 * 6 = 72

72 is your answer.

~

5 0
2 years ago
Let X denote the time from the present until the stock market hits 25,000. If X ≤ 1, you win $10, 000X. If X &gt; 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
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