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3 years ago

15

Help and get brainliest!

1 answer:

Stolb23 [73]3 years ago

8 0

Answer:

I think it's either A or D

Step-by-step explanation:

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Sauron [17]

let's firstly find the equation of the parabola, bearing in mind that x-intercepts or solutions/zeros/roots means y = 0.

$\bf ~~~~~~\textit{vertical parabola vertex form} \\\\ y=a(x- h)^2+ k\qquad \begin{cases} \stackrel{vertex}{(h,k)} \end{cases} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \begin{cases} h=1\\ k=-9 \end{cases}\implies y=a(x-1)^2-9 \\\\\\ \textit{we also know that } \begin{cases} x=0\\ y=-6 \end{cases}\implies -6=a(0-1)^2-9\implies 3=a(-1)^2$

$\bf 3=a\qquad \qquad \textit{therefore}\qquad \qquad \boxed{y=3(x-1)^2-9} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{y}{0}=3(x-1)^2-9\implies 9=3(x-1)^2\implies \cfrac{9}{3}=(x-1)^2\implies 3=(x-1)^2 \\\\\\ \pm\sqrt{3}=x-1\implies \pm\sqrt{3}+1=x\implies x= \begin{cases} \sqrt{3}+1\\ -\sqrt{3}+1 \end{cases}\implies x\approx \begin{cases} 2.73\\ -0.73 \end{cases}$

8 0

3 years ago

Read 2 more answers

Please show work, will mark brainliest

Ad libitum [116K]

Answer:

The radius of the can, rounded to the nearest hundredth, is 530.66.

Step-by-step explanation:

We want to do the reverse of the formula for <em>V</em>, which is pi(r)^2(h).

to isolate r.

Let's start by writing an equivalent equation to V = $\pi$ $r^{2}$ <em>h</em> by solving for r

$\sqrt[]{\frac{V * \pi }{h} } = r$

Now, substitute and solve for r

1014 * 3.14 / 6 = 530.66

5 0

3 years ago

A baker is weighing her ingredients to make cheese bread. She has 710 grams of flour, 225 grams of sugar, and 400 grams of chees

marin [14]

Answer:

1.335 kg

Step-by-step explanation:

710 + 225 + 400 = 1335 grams

1 kilogram = 1000 grams So:

1335/1000 = 1.335 kilograms

7 0

3 years ago

How many quarters make 40 dollars and please work how you get it

Inga [223]

Answer:

that is going to be that is going to be 4 * 4 0. so the answer is 160 quarters because there's four quarters in a dollar so yeah

7 0

3 years ago

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5(2x + 6) + 4(4x + 6) + 2 = 26x + 57<br> What’s the answer

Rama09 [41]

Answer:

No solution

Step-by-step explanation:

10x + 30 +16 x +24 = 26 x + 57

26x + 56 = 26x + 57

56 ≠ 57

3 0

3 years ago

Read 2 more answers