First you take $50 and divide it by 5 then you get $10. You take the $10 and multiply it by 4 because she uses 4/5 of 50
answer-$40
<span>In the question "Susu is solving the quadratic equation 4x2 – 8x – 13 = 0 by completing the square. Her first four steps are shown in the table.
In which step did Susu first make an error?"
Susu made her first error in step 2, when she factored out 4 she is supposed to divide 8x by 4.
Thus the correct expression for step 2 should be 4(x^2 - 2x) = 13
To complete the solution for the equation:
4(x^2 - 2x + 1) = 13 + 4(1)
4(x - 1)^2 = 13 + 4
4(x - 1)^2 = 17
(x - 1)^2 = 17/4
x - 1 = +/- sqrt(17/4)
x = 1 +/- sqrt(17) / 2</span>
Answer:
roots and zeroes.
Explanation:
Zeroes are the solution of any polynomial equation, but when it comes to quadratic equation, we use the term, roots.
So therefore, we use the term zero, for it is a polynomial, and root, for it's a quadratic equation.
Hope you understand
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R(x)= -x2+3x is x=0
s(x)= 2x+1 is x= -1 over 2
(-1-2) (0)
Answer:
Step-by-step explanation:
In first step, we just open the brackets and you should know that ++ = + and +- = - and -- = + and -+ is also equal to -
after opening the brackets we combine terms which are a like
then any order, any grouping you can write the answer in any order and you can also take - common and it will be written as
-(5p-7a+6)
if you multiply the minus it will be the same.