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Nonamiya [84]
3 years ago
13

What is the answer to this math question -9.3÷2.5k=5.1

Mathematics
1 answer:
den301095 [7]3 years ago
4 0

Answer:

That equation is (2.5×2). The mean of the K is ×2

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A man buys a racehorse for $20,000 and enters it in two races. He plans to sell the horse afterward, hoping to make a profit. If
victus00 [196]

Answer:

The expected profit is $10,600.

Step-by-step explanation:

The expected profit can be calculated as the sum of the possible outcomes weighted by their probability of occurrence.

In this case, there are four possible outcomes:

1) The horse win both races. The value of the horse will be $100k-$20k=$80k.

The probability of this outcome is:

P(ww)=P(w1)*P(w2)=0.2*0.3=0.06

2) The horse win the first race, but lose the second one. The value will be $50k-$20k=$30k.

The probability is:

P(wl)=P(w1)*(1-P(w2))=0.2*(1-0.3)=0.2*0.7=0.14

3) The horse lose the first race, but win the second one. The value will be $50k-$20k=$30k.

The probability is:

P(lw)=(1-P(w1))*P(w2)=(1-0.2)*0.3=0.8*0.3=0.24

4) The horse lose both races. The value will be $10k-$20k=-$10k.

The probability is:

P(lw)=(1-P(w1))*(1-P(w2))=(1-0.2)*(1-0.3)=0.8*0.7=0.56

Then, the expected profit can be calculated as:

E(x)=\sum\limits^4_{i=1} {p_ix_i}\\\\E(x)=0.06*80,000+0.14*30,000+0.24*30,000+0.56*(-10,000)\\\\E(x)=4,800+4.200+7,200-5,600=10,600

6 0
3 years ago
Keith collected the names and ages of all of his classmates and organized them in the ordered pair (name, age).
erastova [34]

Answer:

It is both a relation and a function.

Step-by-step explanation:

Keith collected the names and ages of all of his classmates and organized them in the ordered pair (name, age).

Here, if we consider the name as the input and age is the output, then each and every different input there is a single output.

Because a single person can not have more than one age.

Therefore, it is both a relation and a function. (Answer)

7 0
4 years ago
How many grams in 1 kg?
Ludmilka [50]

Answer:

1000 grams

Explanation:

There are 1000 grams in one kilograms

6 0
4 years ago
Read 2 more answers
Which of the following is a factor of (x+y)³-(x+y)³
IgorC [24]

▬▬▬▬▬▬▬▬▬▬▬▬▬▬

<h3>Answer :</h3>

The factor of (x + y)³- (x³ + y³) is <u>3xy</u>

<h3>Step By Step Solution :</h3>

→ (x + y)³- (x³ + y³)

→ (x + y) - (x + y)(x² - xy + y²) [Using identity a³ + b³ = (a + b)(a²- ab+ b²)]

→ (x + y)(x² + y² + 2xy - x² + xy - y²)[Using identity, (a + b)² = (a² + b²+ 2ab)]

→ (x + y) (3xy)

→ 3xy

∴ Option d. 3xy is correct!

▬▬▬▬▬▬▬▬▬▬▬▬▬▬

6 0
3 years ago
Read 2 more answers
The sum of x and 3/5 is 5/7.
crimeas [40]
We first write the word in math as x+3/5 = 5/7.  Now we cross multiply our fractions and rewrite them with the LCD of 5 and 7. Our equation now looks like x + 21/35 = 25/35.  We simplify our equation by subtracting 21/35 from both sides to get x = 4/35. 4/35 is already in lowest terms so it is our answer.
7 0
4 years ago
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