11/14/20

Proof by contradiction
For all x, y, z ∈ Z. At least one of x−y , x−z and y−z is even.
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11/13/20

math question 7th grade
Jill sold half of her comic books and then bought sixteen more. She now has 36. With how many did she begin?
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11/13/20

been stuck on this for awhile for now
Sally bought five boxes. A week later half of all her boxes were destroyed in a fire. There are now only 30 boxes left. With how many did she start?
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11/13/20

Find the sum of the interior angle measures of a regular polygon with 20 sides.
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11/13/20

Laura had $46 to spend on 9 pens.After she bought the pens she had $10 left.How much was each pen?
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11/13/20

Why it shows me Error when calculating sqrt (-1) ?
When I calculate the value of (-1)1/2 the answer is -1but when I do the same thing but with radical √-1 the answer is error ?!!since the radical √ is to the exponent to 1/2 in case of square root... more
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11/13/20

Sequences and Sets
Show that {(1 + 1/n , 2 + 1/n) : n ∈ N} is an open covering of the closed interval (1,2] anddetermine if it can be reduced to a finite cover. Justify your answer.
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11/13/20

What is P(A ∪ B)? Original Problem in Description.
Suppose A and B are mutually exclusive events in a sample space S, C is another event in S, A ∪ B ∪ C = S, and A and B have probabilities 0.1 and 0.5, respectively.What is P(A ∪ B)?
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11/13/20

Suppose A and B are events in a sample space S and suppose that P(A) = 0.7, P(Bc) = 0.1, and P(A ∩ B) = 0.6. What is P(A ∪ B)?
Suppose A and B are events in a sample space S and suppose that P(A) = 0.7, P(Bc) = 0.1, and P(A ∩ B) = 0.6. What is P(A ∪ B)?
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11/12/20

find the integer for -22 + (-16)=

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11/12/20

Liner equations

 2x + y = 19. What is the value of x in the solution to the system of equations?
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11/12/20

I need math help
Question 1In 14 + 18 + 22 + .... (4n + 10) , the (k +1)th term is:A) 4k + 10B) 4n + 14C) 4k + 14D) 4k + 11
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11/12/20

I need Math help
Question 1Given that a and b are negative integers and that a > b. Which of the following is true?A) a^2 > b^2B) a^2 < bC) a^2 < b^2D) a > b^2
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11/12/20

Let f(x)=1/5x+3. Describe the transformations from the graph of f to the graphs of g(x)=f(x+3) and h(x)=f(x)+5.
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11/12/20

What is the Standard Form of the line with x-intercept of 6 and y-intercept of 2?
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11/12/20

what is the slope of the line passing through the points (2/5) and (8/-4).
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11/12/20

A cyclist rides his bike at a speed of 40 kilometers per hour. What is this speed in miles per hour? How many miles will the cyclist travel in 3 hours?.. assume that 1 mile is equal to 1.6 kilometers.
Can someone please help (do not round answer)
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11/12/20

The system of equations 6x+4y=8 and -5x-4y=-6 has the solutions

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11/12/20

What is the solution of the system of equations? 3x+6y+24
help me pleaseee i really need it
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11/12/20

what is the equation of a line with a slope of 3 going through the point (2,1)
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11/12/20

Four times a number q is at most 16.
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11/12/20

The length of a rectangle is six inches more than its width. If the perimeter of the rectangle is 24 inches, find its dimensions.
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11/12/20

What is the image of (3,-4) after a dilation by the scale factor of 2 centered at the origin
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11/12/20

I need help with Math Question
For all integers n >= 1, 7^n - 5 is divisible by:a) 5b) 7c) 4d) 2Which is the correct answer
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11/12/20

The sum of 8 times a number and 4 is 6
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