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How many combinations can you get with 9 items but only 5 used at a time?
9C5 = 9!/[(9 - 5)!5!] = 9!/(4!5!) = (9 x 8 x 7 x 6 x 5!)/(5! x 4 x 3 x 2 x 1) = 3 x 7 = 21
What is five sevenths times four ninths?
5/7 x 4/9 = 20/63Multiply across: 5 x 4 = 20, and 7 x 9 = 63 giving the answer of 20/63
When these operations are performed will have an answer of 7 here are the operations add 5 multiply by 3 divide by 4 and subtract 2?
Start with the equation equaling 7; 3/4(X + 5) - 2 = 7 X + 5 = 4/3(7 + 2) = 4/3 x 9 = 12 X = 12 - 5 = 7
What are all the square numbers from1 - 100?
-99
What is x plus -5 equals 4?
If: x+(-5) = 4 Then: x = 9
How many combinations can you get with 9 items but only 5 used at a time?
9C5 = 9!/[(9 - 5)!5!] = 9!/(4!5!) = (9 x 8 x 7 x 6 x 5!)/(5! x 4 x 3 x 2 x 1) = 3 x 7 = 21
What is x in this equation negative 9 minus 7 times x equals negative 5?
If the equation is (-9-7)x = -5, then x= .3125 or 5/16 If the equation is -9-7x = -5, then x = -.571428 or -4/7
What is five sevenths times four ninths?
5/7 x 4/9 = 20/63Multiply across: 5 x 4 = 20, and 7 x 9 = 63 giving the answer of 20/63
What number when divided by one will you have a remainder of one when divided by 2 3 4 5 6 7 8 or 9?
(2 x 3 x 4 x 5 x 6 x 7 x 8 x 9) + 1 will have a remainder of 1 when divided by 2, 3, 4, 5, 6, 7, 8, or 9. (2 x 3 x 4 x 5 x 6 x 7 x 8 x 9) + 1 = 362,881
If x equals 4 and y equals 5 then 9 x plus 7y equals?
x=4 y=5 9x+7y=?? Replace: 9(4)+7(5)= 71
What is the answer to -9 - 7x equals -5?
-9-7x=-5 express first the equation in terms of x, where, 7x=-9+5 then, 7x=-4 thus, x=-4/7
What is 28 over 5 times 7 over 4?
28/5 x 7/4 28/5 (4) x 7/4 (5) 112/20 x 35/20 = 3920/400 3920/400 reduces to 9 4/5.
What is (21 plus 7)x(9-4)-16?
(21 + 7) x (9-4) - 16 (28) x (5) - 16 140 - 16 124
When these operations are performed will have an answer of 7 here are the operations add 5 multiply by 3 divide by 4 and subtract 2?
Start with the equation equaling 7; 3/4(X + 5) - 2 = 7 X + 5 = 4/3(7 + 2) = 4/3 x 9 = 12 X = 12 - 5 = 7
What is the simplified expression for 2 radical 20 minus 3 radical 7 minus 2 radical 5 plus 4 radical 63?
2√20 - 3√7 - 2√5 + 4√63 = 2√(4 x 5) - 3√7 - 2√5 + 4√(9 x 7) = 4√5 - 2√5 - 3√7 + 12√7 = 2√5 + 9√7
What is a square number which even and a factor of 5?
9 = 3 x 3 16 = 4 x 4 25 = 5 x 5 36 = 6 x 6 49 = 7 x 7
What the product of 7 and 4?
Product means 'Multiply'. 4 x 7 = 28 Learn your '4' times and '7' times tables. 4 x 1 = 4 4 x 2 = 8 4 x 3 = 12 4 x 4 = 16 4 x 5 = 20 4 x 6 = 24 4 x 7 = 28 4 x 8 = 32 4 x 9 = 36 4 x 10 = 40 & 7 x 1 = 7 7 x 2 = 14 7 x 3 = 21 7 x 4 = 28 7 x 5 = 35 7 x 6 = 42 7 x 7 = 49 7 x 8 = 56 7 x 9 = 63 7 x 10 = 70 Notice in both tables that answer is '28'.
