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What is the value of x and y in 3x-y equals 21?
-18
What is the factor of this trinomial x2 plus 13x plus 42?
The easiest way to factor x2 + 13x + 42 is to look at the last number. The last number is 42. Now, think of what whole numbers you can multiply to equal 42. 1 x 42 2 x 21 3 x 14 6 x 7 If you look at the equation, we notice that the sign pattern is + + + When the sign pattern is + + +, we know that whatever two factors you choose must add up to the middle number, 13. So, automatically we can get rid of some of these factors. 1 x 42 --> 1 + 42 doesn't equal 13 2 x 21 --> 2 + 21 doesn't equal 13 3 x 14 --> 3 + 14 doesn't equal 13 Now, we're automatically left with 6 x 7. So, your answer would be (factored out), (x+6)(x+7) Where x = -7, -6
X over 5 equals 8 over 21 solve for x?
x/5 = 8/21 x = 8/21 * 5 x = 1.904761905
What is the answer to -12 equals x plus 9?
-12 = x+9 x+9 -9 = -12 -9 x = -21
Factor x squared - 4x - 21?
-17
What multiplication facts equal 21?
1 x 21 3 x 7 7 x 3 21 x 1
What multiplcations equal 21?
1 x 21 3 x 7
What two numbers multiply to equal 21 but add together equal -22?
-1
What is the number increased by one-half of itself is equal to 21?
let X = number X + 1/2 X = 21 1.5 X = 21 X = 14
How many millimeters are there in 21 kilometers?
One kilometre is equal to 1000 x 1000 = 1000000 millimetres. Therefore, 21 kilometres is equal to 21 x 1000000 = 21000000 millimetres.
How many centimeters are there in 21 kilometers?
One kilometre is equal to 1000 x 100 = 100000 centimetres. Therefore, 21 kilometres is equal to 21 x 100000 = 2100000 centimetres.
What does x equal in 21(2 - x) 12x 44?
-1
Why does 168 divided by 8 equal 21?
Because 8 x 21 = 168
What times what can equal 147?
7 x 21 3 x 49
What is 21 times 15?
21*15 is equal to 315 21 x 15 = 315
Does 7 times something equal 21?
Yes, 7 X 3= 21.
What two numbers multiplied together will equal 21?
10.5 x 2=21
