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What is 31 times 7?
31 x 7 = 217
Is 1519 composite or prime?
Composite because '7' is a factor of 1519 7)1519 = 217 Divide by '7' again 7)217 = 31 Divide by '31' ( a prime Number) / 31 = 1 So 1519 is a composite of 7 x 7 x 31 or 49 x 31
What multiplied by 31 equals 217?
7 x 31
What two numbers added together make7 but multiplied make 20?
Let call them x and y x+y=7 and x*y=20 From the first you get x = 7 -y, put into the second get (7-y)*y=20 -y^2+7*y=20 or y^2-7+20=0 Delta = (-7)^2-4*1*20 = -31 y = (7-i*sqrt(31))/ 2 or y = (7+i*sqrt(31))/ 2 and x = 7-y = (7+i*sqrt(31))/ 2 or x = (7-i*sqrt(31))/ 2
How do you solve 4x-7 equals 31?
4X - 7 = 31 add 7 to each side 4X - 7 + 7 = 31 + 7 4X = 38 divide both sides integers by 4 (4/4)X = 38/4 X = 38/4 = 19/2 --------------------------reduced, check in original equation 4(19/2) - 7 = 31 76/2 - 7 = 31 38 - 7 = 31 31 = 31 -----------checks
What is 31 times 7?
31 x 7 = 217
Is 1519 composite or prime?
Composite because '7' is a factor of 1519 7)1519 = 217 Divide by '7' again 7)217 = 31 Divide by '31' ( a prime Number) / 31 = 1 So 1519 is a composite of 7 x 7 x 31 or 49 x 31
What is x-24 equals 7?
x = 31
What multiplied by 31 equals 217?
7 x 31
What two numbers added together make7 but multiplied make 20?
Let call them x and y x+y=7 and x*y=20 From the first you get x = 7 -y, put into the second get (7-y)*y=20 -y^2+7*y=20 or y^2-7+20=0 Delta = (-7)^2-4*1*20 = -31 y = (7-i*sqrt(31))/ 2 or y = (7+i*sqrt(31))/ 2 and x = 7-y = (7+i*sqrt(31))/ 2 or x = (7-i*sqrt(31))/ 2
How do you get 31 out of 1 2 6 and 7?
6 x (7 - 2) + 1 = 31
How do you solve 4x-7 equals 31?
4X - 7 = 31 add 7 to each side 4X - 7 + 7 = 31 + 7 4X = 38 divide both sides integers by 4 (4/4)X = 38/4 X = 38/4 = 19/2 --------------------------reduced, check in original equation 4(19/2) - 7 = 31 76/2 - 7 = 31 38 - 7 = 31 31 = 31 -----------checks
What is 31 equals 7x-11?
31=7x-11, 31+11=7x, 42/7=x, x=6 :)
The quotient of a number and 4 is increased by 7 the result is -31. What is the number?
x/4+7=-31
What is 31 multiplied by 7?
31 x 7 --- __7 21 (The underscores are for formatting) The 7 should be aligned in a column to the right of 21 217 Or: 31 = 3x10 + 1 ---> 7 x (3x10 + 1) = 7x3x10 + 7x1 = 21x10 + 7 = 210 + 7 = 217
What is the prime factorization of 434?
2 x 7 x 31 = 434
What is the prime factorization of 1085?
5 x 7 x 31 = 1085
