(fog)(3) = 22
Step-by-step explanation:
f(x + 3x - 5; g(x)=x²9(3)=3²=9
(fog)(3) = f(g(3)) = f(9)=3-9-5=27
-5-22 [Ans]
Answer:
Part 1: 4.5
Part 2: 20%, 0.2
Step-by-step explanation:
1. 1.8 = 80% We need to understand this.
So we can do this then:
2. 1.8/8 = 80%/8
3. 0.225 = 1%
4. 0.225 * 20
5. 4.5
(this is part 1 btw)
<u>Part 2!</u>
20% since 100-80 is 20.
20% -> 0.2
It would be 2(x+3)(x+1)=0
Explanation:
I used factor by grouping. You multiply the first term (2) by the last term (6). This gives you 12 then take the factors of 12 that add up to the middle term 8. You get 6 and 2.
It should look like 2x^2+6x+2x+6=0
when you do factor by grouping you factor the first two terms and then the last two terms separately. So you get (2x+2) and (x+3). (2x+2) could be factored into 2(x+1). Then you put everything together and get 2(x+3)(x+1)=0
Answer: The equation is W^2 + 4W - 96= 0
{Please note that ^2 means raised to the power of 2}
Step-by-step explanation: We have been given hints as to the measurement of the length and width of the rectangle. The length is given as four more than the width. What that means is that whatever is the width, we simply add four to get the measurement of the length. Therefore if the width is W, then the length is W + 4.
That is,
L = W + 4 and
W = W
Also we have the area given as 96.
Remember that the area of a rectangle is given as
Area = L x W.
In this question, the Area is expressed as
Area = (W + 4) x W
96 = W^2 + 4W
Subtract 96 from both sides of the equation and we have
W^2 + 4W - 96 = 0.
We now have a quadratic equation from which we can determine the dimensions of the rectangle
