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2 years ago

Solve and in standard form please. you must add. this is from khan academy

Mathematics

2 answers:

Sindrei [870]2 years ago

8 0

We are asked to sum the two trinomials $(-4f^3-5f+16)+(4f^2-f+9)$ . We can start by using the distributive property to remove the parenthesis, giving us $-4f^3-5f+16+4f^2-f+9$ . Next, when we combine like terms, we get $\boxed{-4f^3+4f^2-6f+25}$ . Hope this helped!

Ganezh [65]2 years ago

4 0

Hey there,

I wont be able to do it step by step because I have to leave real soon, But I really want to help you because this does look very hard. I used a calculate because I'm being rushed. Your answer would be in the attachment I left. I hope that would be the correct answer. You have a good week-end "Morganfredieu"

~Twizzie

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caleb and emily are standing 100 yards from each other. caleb looks up at a 45 degree angle to see a hot air balloon. Emily look

Sunny_sXe [5.5K]

Check the picture below.

thus then

$\bf \begin{cases}
y=100-a\\
y=a\sqrt{3}
\end{cases}\implies 100-a=a\sqrt{3}\implies 100=a+a\sqrt{3}
\\\\\\
100=a(1+\sqrt{3})\implies \boxed{\cfrac{100}{1+\sqrt{3}}=a}
\\\\\\
\textit{what is the altitude \underline{y} then?}\qquad y=100-a
\\\\\\
y=100-\cfrac{100}{1+\sqrt{3}}\implies y\approx 63.39745962156~yards$

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2 years ago

Read 2 more answers

4) Find the slope of the following graph. у -2 o B

Strike441 [17]

Answer:

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Step-by-step explanation:

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2 years ago

Arte-miy333 [17]

Answer:ddddd

Step-by-step explanation:

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2 years ago

Solve the system with substitution 2.5x-3y=-13 3.25x-y=-14

Serjik [45]

Answer: x= -4 , y= 1

Step-by-step explanation:

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3 years ago

Suppose a parabola has vertex (6,5) and also passes through the point (7,7). Write the equation of the parabola in vertex form.

jek_recluse [69]

Answer:

Choice B: $y = 2\, (x - 6)^{2} + 5$ .

Step-by-step explanation:

For a parabola with vertex $(h,\, k)$ , the vertex form equation of that parabola in would be:

$\text{$y = a\, (x - h)^{2} + k$ for some constant $a$}$ .

In this question, the vertex is $(6,\, 5)$ , such that $h = 6$ and $k = 5$ . There would exist a constant $a$ such that the equation of this parabola would be:

$y = a\, (x - 6)^{2} + 5$ .

The next step is to find the value of the constant $a$ .

Given that this parabola includes the point $(7,\, 7)$ , $x = 7$ and $y = 7$ would need to satisfy the equation of this parabola, $y = a\, (x - 6)^{2} + 5$ .