0
Add your answer:
Earn +20 pts
What multiplies to -30 and adds to -7?
-37
Is 30 multiplied by 7-3 the product of 27 and 7?
No. 30 x 7-3 = 120 27 x 7 = 189
What two numbers multiply to 1600 and add to 60?
Let the numbers be x and y, then x + y = 60 (which yields y = 60 - x) xy = 1600 (replace y with 60 - x) x(60 - x) = 1600 60x - x2 = 1600 (multiply by -1 to both sides) x2 - 60x = -1600 (add 302 to both sides to complete the square) x2 - 60x + 302 = -1600 + 900 (x - 30)2 = -700 (take the square root of both sides) x - 30 = ± √-700 (add 30 to both sides and write -700 = (100)(7)(-1)) x = 30 ± (√100)(√7)(√-1) x = 30 ± (10√7)i So, x = 30 + (10√7)i or x = 30 - (10√7)i thus, y = 60 - [30 + (10√7)i] or y = 60 - [30 - (10√7)i ] y = 30 - (10√7)i or y = 30 + (10√7)i Therefore, [30 + (10√7)i] + [30 - (10√7)i] = 60 [30 + (10√7)i] [30 - (10√7)i] = 1600 Check:
How to Convert each fraction into an equal fraction using the lcd?
Example: 1/30 and 1/42Factor the denominators.2 x 3 x 5 = 302 x 3 x 7 = 42Combine the factors, eliminating duplicates.2 x 3 x 5 x 7 = 210, the LCDConvert each fraction by multiplying by what's missing.30 x 7 = 21042 x 5 = 2101/30 x 7/7 = 7/2101/42 x 5/5 = 5/210
What is 7 x 13 x 30?
2730
What is the prime factorization of 14 21 30?
2 x 7 = 14 3 x 7 = 21 2 x 3 x 5 = 30
What is the greatest common factor of 450 and 420?
30 (30 x 7, 30 x 15)
What is 16x37?
592 6 x 7 = 42 6 x 30 = 180 10 x 7 = 70 10 x 30 = 300 Total: 592
LCM of 30 and 21?
210. 30 = 2 x 3 x 5 21 = 3 x 7 lcm = 2 x 3 x 5 x 7 = 210
How do you find LCM of 14 and 30?
2 x 7 = 14 2 x 3 x 5 = 30 2 x 3 x 5 x 7 = 210, the LCM
What are the partial product for 77 time's 30?
70 x 30 = 2100 7 x 30 = 210
How do you multiply all the prime factors together?
2 x 3 x 5 x 7 2 x 3 = 6 6 x 5 = 30 30 x 7 = 210 2 x 3 x 5 x 7 = 210
