3 years ago

Rewrite the function y= x^2 + 14x + 4 in vertex form

1 answer:

4 0

Vertex form is basically commplete the square
y=a(x-h)^2+k

y=x^2+14x+4
take 1/2 of 14 and square it, (7^2=49)
add that and its negative to right side
y=x^2+14x+49-49+4
factor perfect squaer
y=(x+7)^2-49+4
y=(x+7)^2-45

answer is A

You might be interested in

What is the value of x in the equation 25x2 = 16?

valentina_108 [34]

25x2 = 16
x^2 = 16/25
x^2 = 4^2/5^2
x = 4/5

7 0

3 years ago

Read 2 more answers

How do i solve the question in the image provided ?

Mars2501 [29]

Answer:

0.19+0.46i and 0.19-0.46i

Step-by-step explanation:

$\neq (-b+\sqrt{b^2-4ac} )/2a\\and\\(-b-\sqrt{b^2-4ac} )/2a\\\\a=8\\b=3\\c=2\\(-3+\sqrt{3^2-4*8*2} )/(2*8)\\= - 0.1875+0.463512i\\(-3-\sqrt{3^2-4*8*2} )/(2*8) = -0.1875-0.463512i$

hope its right

6 0

3 years ago

Calculate the percent of change: 50 pounds to 35 pounds.

Vladimir [108]

30 percent change is the answer

7 0

3 years ago

What's substitution for: X=y-7 X+8y=2

MrRissso [65]

$\left \{ {{x=y-7} \atop {x+8y=2}} \right. \\\\
substitute\ x=y-7\ into \ the\ second\ equation\\\\
y-7+8y=2\\\\
9y-7=2\ \ \ | add\ 7\\\\
9y=9\ \ \ | divide\ by\ 9\\\\
y=1\\\\x=y-7=1-7=-6$

4 0

3 years ago

Find x to the nearest tenth

jeka57 [31]

Answer:

x=30.6

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers