Step-by-step explanation:
If a+b=50
When b=30
a=50-b
a= 50 - 30
a=20
Therefore 20(a)+30(b)=50
Answer:
![[x + 2][x + 5][x - 1]](https://tex.z-dn.net/?f=%5Bx%20%2B%202%5D%5Bx%20%2B%205%5D%5Bx%20-%201%5D)
Step-by-step explanation:
The Leading Coefficient is 1 and the initial value is 10; they have a common factor of 1, so that automatically gives us our first factor of
. Now, since the divisor\factor is in the form of x - c, use what is called Synthetic Division. Remember, in this formula, -c gives you the OPPOSITE terms of what they really are, so do not forget it. Anyway, here is how it is done:
1| 1 6 3 −10
↓ 1 7 10
__________
1 7 10 0 → ![{x}^{2} + 7x + 10 >> [x + 2][x + 5]](https://tex.z-dn.net/?f=%7Bx%7D%5E%7B2%7D%20%2B%207x%20%2B%2010%20%3E%3E%20%5Bx%20%2B%202%5D%5Bx%20%2B%205%5D)
You start by placing the <em>c</em> in the top left corner, then list all the coefficients of your dividend [x³ + 6x² + 3x - 10]. You bring down the original term closest to <em>c</em> then begin your multiplication. Now depending on what symbol your result is tells you whether the next step is to subtract or add, then you continue this process starting with multiplication all the way up until you reach the end. Now, when the last term is 0, that means you have no remainder. Finally, your quotient is one degree less than your dividend, so that 1 in your quotient can be an x², the 7x follows right behind it, then 10, giving you the other factor of
, which can be factored further to
, attaching this to the first factor you started out your work on:
![[x + 2][x + 5][x - 1]](https://tex.z-dn.net/?f=%5Bx%20%2B%202%5D%5Bx%20%2B%205%5D%5Bx%20-%201%5D)
I am joyous to assist you anytime.
Answer:
3544
Step-by-step explanation:
This is a problem of compound growth. The formula is

Where F is the value in the future (in this case, the population after 13 years)
P is the intial amount (here, the initial population of 2000, so P = 2000)
r is the rate of growth (here, it is 4.5%, in decimal, 0.045)
t is the time frame (here, it is 13 years, so t = 13)
<em>we can plug the numbers into the formula and solve for F:</em>
<em>
</em>
<em>rounded to the nearest whole number, the </em><em>population after 13 years would be 3544</em>
Answer:
The possible rational roots are: +1, -1 ,+3, -3, +9, -9
Step-by-step explanation:
The Rational Root Theorem tells us that the possible rational roots of the polynomial are given by all possible quotients formed by factors of the constant term of the polynomial (usually listed as last when written in standard form), divided by possible factors of the polynomial's leading coefficient. And also that we need to consider both the positive and negative forms of such quotients.
So we start noticing that since the leading term of this polynomial is
, the leading coefficient is "1", and therefore the list of factors for this is: +1, -1
On the other hand, the constant term of the polynomial is "9", and therefore its factors to consider are: +1, -1 ,+3, -3, +9, -9
Then the quotient of possible factors of the constant term, divided by possible factor of the leading coefficient gives us:
+1, -1 ,+3, -3, +9, -9
And therefore, this is the list of possible roots of the polynomial.