# Discrete Math

posted by .

Determine How many integer solution there are to X1+X2+X3+x4=19 if
A) 0 ¡Ü Xi for all 1 ¡Ü i ¡Ü 4

B) 0¡Ü Xi < 8 for all 1 ¡Ü i ¡Ü 4

C) 0¡ÜX1,¡Ü5,0¡ÜX2¡Ü6,3¡ÜX3¡Ü7,3¡ÜX4¡Ü8

## Similar Questions

1. ### Plz help me..just one MATH question

The number 1 is both the square of an integer and the cube of an integer. What is the next larger interger which is both a square and a cube of a positve integer. plz help, the only number i can think of was 0 but its smaller than …
2. ### discrete math

Prove by contradiction that for any even integer a and any odd integer b, 4 does not divide (a^2 + 2b^2). Proposition: That 4k (k is any integer) = a^2 +2b^2, and a is even, and b is odd. But 4k is even (product of any integer and …
3. ### Discrete Math

1. Assume that n is a positive integer. Use the proof by contradiction method to prove: If 7n + 4 is an even integer then n is an even integer. 2. Prove: n is an even integer iff 7n + 4 is an even integer. (Note this is an if and only …
4. ### Discrete Math

Let g(x)=3x^2+14x-15. Determine if g is one to one or onto. A. g:N->N B. g:R->R If You can help me with this problem showing all work that would be greatly appreciated. Thank You
5. ### MATH

Determine whether the situation calls for a discrete or continuous random variable. The braking time of a car Is it discrete?
6. ### DISCRETE MATHS

We need to show that 4 divides 1-n2 whenever n is an odd positive integer. If n is an odd positive integer then by definition n = 2k+1 for some non negative integer, k. Now 1 - n2 = 1 - (2k+1)2 = -4k2-4k = 4 (-k2-4k). k is a nonnegative …
7. ### Math - Discrete math

(1) For all integers y, there is an integer x so that x^3 + x = y. (2)For all integers x, x^3 + x is even Thank you for your help.
8. ### Discrete Mathematics

b) Determine whether or not the statement “for all integers a, b, c, if a | bc, then a | b or a | c” is false. Justify your answer.
9. ### Chemistry

Consider a 0.15m calcium chloride aqueous solution a) determine the molarity of all solution. Assume that calcium chloride completely ionizes when dissolved in water. All solutes means all cations and anions. b)
10. ### CHEMISTRY

*Consider a 0.15 m strontium chloride aqueous solution. a. Determine the molality (in m) of all solutes in the solution. Assume that strontium chloride completely ionizes when dissolved in water. All solutes means all cations and anions. …

More Similar Questions