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3 years ago

11

Hello there brainly community! I am currently joining brainly and this is my first question! I hope I can help some of you out :

))

2 answers:

yulyashka [42]3 years ago

6 0

Answer: what’s the question ????

Step-by-step explanation:

Over [174]3 years ago

5 0

Hello new comer! Welcome to the Brainly community, it’s good to see new blood around here. I’m sure you will help some people out with your answers one way or another.

Have a good day my friend :)))

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Chanasia buys a plastic bucket. The bucket weighs 460 g. The label on the bucket says made with 20% recycled plastic. How many g

Eddi Din [679]

Answer:

92

Step-by-step explanation:

20% of 460 is 92 so it would be 92

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3 years ago

Is 3/4 bigger than one fourth

guapka [62]

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3 years ago

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the axis of symmetry for the graph of the function is f(x) = 1/4x2 bx 10 is x = 6. what is the value of b?

Lady bird [3.3K]

we have

$f(x)=\frac{1}{4} x^{2} +bx+10$

This is a vertical parabola open upward

The axis of symmetry is equal to the x-coordinate of the vertex

The vertex is the point (h,k)

the equation of the axis of symmetry is $x=h$

In this problem

$x=6$

so the x-coordinate of the vertex is $h=6$

<u>Convert the quadratic equation in vertex form</u>

Group terms that contain the same variable, and move the constant to the opposite side of the equation

$f(x)-10=\frac{1}{4} x^{2} +bx$

Factor the leading coefficient

$f(x)-10=\frac{1}{4}(x^{2} +4bx)$

Complete the square. Remember to balance the equation by adding the same constants to each side

$f(x)-10+b^{2}=\frac{1}{4}(x^{2} +4bx+4b^{2})$

Rewrite as perfect squares

$f(x)+(b^{2}-10)=\frac{1}{4}(x+2b)^{2}$

$f(x)=\frac{1}{4}(x+2b)^{2}-(b^{2}-10)$

remember that

$h=6$

so

$(x+2b)=(x-6)$

$2b=-6$

$b=-3$

substitute in the equation

$f(x)=\frac{1}{4}(x-6)^{2}-((-3)^{2}-10)$

$f(x)=\frac{1}{4}(x-6)^{2}+1$

therefore

<u>the answer is</u>

$b=-3$

8 0

4 years ago

Read 2 more answers

in a certain county, the number of charter schools is 4 less than twice the number of alternative schools. We know that there ar

Minchanka [31]

Answer:

There are $26$ alternative schools in the country

Step-by-step explanation:

Let

x------> the number of charter schools

y-----> the number of alternative schools

we know that

$x=48$

$x=2y-4$ -----> equation A

substitute the value of x in the equation A and solve for y

$48=2y-4$

$2y=48+4$

$2y=52$

$y=26$

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