Answer:
x=7plusminus radical 65/2
Step-by-step explanation:
The quadratic equation- ax^2+bx+c=0
x^2=7x+4
Move all to one side.
x^2-7x-4=0
x=7plusminus radical 65/2
The answer is
A=1/2bh
So the base number times height number divided by two!!
In order the numbers are 20, 29, 32, 37, 42.
So that means the median is 32. In order for the median to stay the same one of the three data values must be 32 as well as adding a number to each side of the ends. One 32 or less another 32or more.
The mean right now is: 20+29+32+37+42=160 and there are 5 values.
Mean: 160/5=32
For it to increase by 10 it has to be 42.
extra 3 numbers I used were 31, 32, & 113 (those are your answer)
Al I know is that you have to use systems of equations to solve it. Sorry
Given:
(3x^4 - 2 + 8x^3 ) + (7x^3 - 6 + 7x^4 )
Add like terms together ( same variables and exponents )
3x^4 + 7x^4 +8x^3 + 7x^3 -2 - 6
10x^4 + 15x^3 - 8
Answer :
10x^4 + 15x^3 - 8