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Vaselesa [24]
3 years ago
7

(20 pts, pls answer these correctly, if possible ^^;;)

Mathematics
2 answers:
Nadusha1986 [10]3 years ago
3 0

Answer:

1. always

2.never

3.sometimes

4.always

5.sometimes

6.always

Step-by-step explanation:

It is clear from the given number line, that m is a negative integer and n is a positive integer.

1. It is always true because addition is always commutative property.

2. It is never positive because product of two different sign is always negative.

3.dividing two integer with unlike sign may result in any integer

4.when a positive quantity is reduced from a negative quantity, the result is always negative.

5.division of two unlike integers may result the same,if they both have the same value

6.If an opposite of a positive integer is added to that positive integer itself, the result is is always 0.

nika2105 [10]3 years ago
3 0

Answer:

yes

Step-by-step explanation:

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if you start from 0, how many steps do you have to take to get to -3. what does the number of steps represent​
Leviafan [203]

Answer:

3 steps

Step-by-step explanation:

FIrst of all, if you think about it, we can just say -3 as 3 ( even though they are not equal, were just counting steps.)

On a number line, negative numbers are on the left of 0 and positive on the right of 0.

So, lets say the middle number is 0 on our number line. -3 is 3 steps to the left. We take 1 step to negative 1, another step to -2, and then a 3rd and final step to -3.

The steps represent how far the number is from 0. FIr example, we have to add 3 to -3 to get to 0, like how we add 7 to 0 to get 7!

Hope this helps!

5 0
3 years ago
Read 2 more answers
A tennis player makes a successful first serve 51% of the time. If she serves 9 times, what is the probability that she gets exa
aleksley [76]

Answer:

P(X=3)

And we can use the probability mas function and we got:

P(X=3)=(9C3)(0.51)^3 (1-0.51)^{9-3}=0.1542  

Step-by-step explanation:

Previous concepts  

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".  

Solution to the problem  

Let X the random variable of interest, on this case we now that:  

X \sim Binom(n=9, p=0.51)  

The probability mass function for the Binomial distribution is given as:  

P(X)=(nCx)(p)^x (1-p)^{n-x}  

Where (nCx) means combinatory and it's given by this formula:  

nCx=\frac{n!}{(n-x)! x!}  

And we want this probability:

P(X=3)

And we can use the probability mas function and we got:

P(X=3)=(9C3)(0.51)^3 (1-0.51)^{9-3}=0.1542  

4 0
3 years ago
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What is the difference between 2a + 5 and 2(a + 5)? Give an English expression to describe each of
Sergio [31]

Answer:

without brackets, the two is only multiplying the a. with brackets, you distribute the 2, making the equation 2a+10

Step-by-step explanation:

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3 years ago
Y=-4x-2<br> -3x-2y=19<br> Systems by substitute
Vsevolod [243]

Answer:

Point Form:

(3−14)

Equation Form:

x=3,y=−14

Step-by-step explanation:

6 0
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Answer:

Re :3

Step-by-step explanation:

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