Step-by-step explanation:
x⁴+3x³-4x²=0
x²(x²+3x-4)=0
x²+3x-4=0
x²+4x-x-4=0
x(x+4)-1(x+4)=0
(x+4)(x-1)=0
x=-4 or 1
x can't be negative
therefore x=1
x+4=1+4=5
Answer: 33%
Step-by-step explanation: 5/15 simplifies to 1/3 which is 33%
'Three more' What is(are) the other one(s)?
Incomplete question. Here's the full question:
At the beginning of the day, the stock market goes up 30 1/2 points. At the end of the day, the stock market goes down 120 1/4 points. What is the total change in the stock market from the beginning of the day to the end of the day?
Answer:
<u>-15%</u>
Step-by-step explanation:
First, we convert the fraction to a whole number;
At the beginning of the day: = 15 (30*1 / 2)
At the end of the day: = 30 (120 * 1 / 4)
Next, since we are told that at the end of the day, the stock market goes down, it means we will subtract any gain it had by the change;
%
Hence, the total change in the stock market from the beginning of the day to the end of the day is <u>-15%.</u>
Wow. They worked hard to trip you up on this one!
First, don't let the word "decompose" spook you.
We are basically dividing 1 sq m into 9 equal pieces.
So each piece is 1/9 of a sq m.
Then, we make each small piece 1/2 of a square.
1/9 x 1/2 = 1/18.
Each triangle will be 1/18 of a sq meter.
So 6 will be 6/18 or 1/3 of a sq. meter
To figure 1.5 square meters out of triangles...
There are 2 triangles per small square, and 9 small squares per sq meter - and then you add 50% more.
(2 x 9) + (2 x 9 x .5) = 27 triangles