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Marat540 [252]
3 years ago
15

If x is a prime number then x+1 is not a prime number

Mathematics
2 answers:
s2008m [1.1K]3 years ago
8 0
1 come on that's seems like it but it could be three too
MissTica3 years ago
5 0
0 1 or 2 are all counter examples
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3) A construction company uses 900 bricks to
denis-greek [22]

Answer:$570

Step-by-step explanation:If it is 900 for 2 walls, and they need 6 walls, then multiply 900 by 3. They would use 2700 bricks for 6 walls. Multiply 2700 by 0.10 to get the price for all the bricks, 270 dollars. If labor to build each wall costs 50 dollars then multiply that by 6 and add it to the 270 dollars. It costs 570 dollars to build 6 walls

6 0
3 years ago
Use the Pythagorean Theorem to solve for the missing side length. Round to the nearest tenth if necessary.
Ede4ka [16]

Answer:

B= 6

Step-by-step explanation:

pythagorean theorem formula is a² + b² = c²

so: 8² + b² = 10²

then: 64 + b² = 100

subtract 64 from both sides to get b²= 36

square root 36 and you get 6 for b

answer: B= 6

8 0
3 years ago
a. A 2017 poll found that 56​% of college students were very confident that their major will lead to a good job. If 15 college s
lesya [120]

Answer:

0.01083 or 1.083%

Step-by-step explanation:

This problem can be modeled as a binomial probability model with probability of success p = 0.56.

The probability of x=13 successes (a college student being very confident their major would lead to a good job) in a number of trials of n=15 is:

P(X=x) = \frac{n!}{(n-x)!x!} *p^x*(1-p)^{n-x}\\P(X=13) = \frac{15!}{(15-13)!13!} *0.56^{13}*(1-0.56)^{15-13}\\P(X=13) = 0.01083=1.083\%

The probability is 0.01083 or 1.083%.

8 0
3 years ago
Assuming a linear relationship between x and y, if the coefficient of correlation (r) equals -0.75, this means that:
Gelneren [198K]

Since we are given that the relationship between x and y is linear. Therefore this means that the given equation takes the form of:

y = m x + b

where,

b is the y intercept of the equation

m is the slope of the equation

 

However we should take note that the slope m is directly proportional to the coefficient of correlation. Since our coefficient of correlation is negative, this only means that the value of y is decreasing with increasing x, hence plot of y and x is descending with increasing x. Furthermore, this also tells that for every 1 unit increase of x, there is a 0.75 units decrease of y.

6 0
3 years ago
5у - 10 = -25<br><br> Solve<br><br> What is y
8090 [49]

Answer:

y= -3                         Your Welcome tell me if you got it right

Step-by-step explanation:

7 0
3 years ago
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