3 years ago

Can anyone plz help me

Mathematics

1 answer:

yan [13]3 years ago

3 0

X=4 is the equation

You might be interested in

Any one know how to find the roots of an equation?

soldier1979 [14.2K]

So what you do is
make into ax^2+bx+c=0 form

add-9/2 to both sides
y^2-2y+9/2=0
now we use the quadratice formula which is
x= $\frac{-b+/- \sqrt{b^{2}-4ac} }{2a}$

ax^2+bx+c=0
1y^2-2y+9/2
a=1
b=-2
c=9/2
subsitute
x= $\frac{-(-2)+/- \sqrt{(-2)^{2}-4(1)(9/2)} }{2(1)}$
x= $\frac{2+/- \sqrt{4-(36/2)} }{2}$
x= $\frac{2+/- \sqrt{4-(18)} }{2}$
x= $\frac{2+/- \sqrt{-14} }{2}$
x= $\frac{2+/- \sqrt{-14} }{2}$
x= $1+/- \frac{\sqrt{-14} }{2}$
x= $1+/- \frac{\sqrt{14} \sqrt{-1}}{2}$
x= $1+/- \frac{\sqrt{14} i }{2}$
x= $1+/- \frac{ i \sqrt{14} }{2}$

answer is C

6 0

3 years ago

What is the x-value of the solution of the system of

LenaWriter [7]

Answer:

Step-by-step explanation:

hello :

y= 5x + 9

y = -x +3

so : 5x+9 = -x+3

5x+x= 3-9

6x=-6

x=-6/6 = -1

5 0

4 years ago

Read 2 more answers

"select all the numbers that are solutions to the equation x^3=27"

Ymorist [56]

B and C

3^3 = 27
the cubed root of 27 is 3

4 0

3 years ago

Jenny bought 4 DVD's for $25.20. What was the unit rate?

alukav5142 [94]

I think its 6.3........

5 0

3 years ago

Read 2 more answers

Also called regrouping this is when adding numbers results in more than two digits and one digit is placed in the colum to the l

kotykmax [81]

Answer:

Carrying forward.

Step-by-step explanation:

When regrouping is done to add the numbers where results in a more than 2 digit and one digit is placed to left Colum is called as carrying forward. As regrouping refers to carrying the place values in order to perform operations like addition or subtraction.

6 0

3 years ago