increasing 20 to 40 is the same as increasing 20 by 20 (or itself), so it is a 100% increase. Decreasing 40 to 20 is the same as decreasing 40 by 1/2 or by 20. So it is a 50% increase.
when going from 20 to 40, the number is being doubled, and when youre going from 40 to 20 you are cutting the number in half.
hope this helped:)
We solve the equation, ( a + a + 1 )^2 = 112 + a^2 + ( a + 1 )^2;
Then, ( 2a + 1 )^2 = 112 + a^2 + a^2 + 2a +1;
4a^2 + 4a + 1 = 113 + 2a^2 + 2a;
Finally, 2a^2 + 2a - 112 = 0;
a^2 + a - 56 = 0;
We use <span>Quadratic Formula for this Quadratic Equation;
The solutions are a1 = 7 and a2 = -8;
But a is a natural number; so, a = 7;
The natural consecutive numbers are 7 and 8.</span>
Answer:
proportional
Step-by-step explanation:
Answer:
( 3u +12) / (v^2+4)
Step-by-step explanation:
(-u+3) / (v^2+4) + ( 4u+9)/( v^2+4)
Since the denominators are the same, we can add the numerators
((-u+3) + ( 4u+9)) /( v^2+4)
Combine like terms
( 3u +12) / (v^2+4)
Answer:
w + d = 797
w = d - 53
Because they are equal, we can take whatever is on one side of the = and replace it for what's on the other side.
d - 53 + d = 797
2d = 850
d = 425
Step-by-step explanation:
