Help me Please!

Mathematics

1 answer:

gavmur [86]2 years ago

7 0

X=3n-3
Hope I’m right yww

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Confused on this question

Sloan [31]

Answer:

3(3+x)=9+3x, or B

Step-by-step explanation:

From the diagram, we can see that there are 3 rows of one x and 3 ones each.

Therefore, we can make the equation 3(3+x)

Then we could either count the blocks out to get 9+3x or just solve the above equation.

So, the answer would be 3(3+x)=9+3x, or B

5 0

3 years ago

It's super easy!!<br><img src="https://tex.z-dn.net/?f=%20%5Ccos%20%5Ctheta%20%5C%3A%20%20%2B%20%20%5Ctan%20%5Ctheta%20%3D%20" i

valina [46]

Answer:

$\frac{cos^{2} \theta + sin\theta}{cos\theta}$

Step-by-step explanation:

Solving :

$cos\theta + tan\theta$
$cos\theta + \frac{sin\theta}{cos\theta}$
$\frac{cos^{2} \theta + sin\theta}{cos\theta}$

4 0

2 years ago

For the function, the vertex of the function's graph is given. Find the unknown coefficients.

olga2289 [7]

$\bf \textit{vertex of a vertical parabola, using coefficients} \\\\ y=\stackrel{\stackrel{a}{\downarrow }}{1}x^2\stackrel{\stackrel{b}{\downarrow }}{+b}x\stackrel{\stackrel{c}{\downarrow }}{+c} \qquad \qquad \left(-\cfrac{ b}{2 a}~~~~ ,~~~~ c-\cfrac{ b^2}{4 a}\right)~~=~~(-2,4) \\\\[-0.35em] ~\dotfill\\\\ -\cfrac{b}{2a}=-2\implies -\cfrac{b}{2(1)}=-2\implies -b=-4\implies \boxed{b=4} \\\\[-0.35em] ~\dotfill$

$\bf c-\cfrac{ b^2}{4 a}=4\implies c-\cfrac{\boxed{4}^2}{4(1)}=4\implies c-\cfrac{16}{4}=4 \\\\\\ c-4=4\implies \boxed{c=8} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill y=x^2+4x+8~\hfill$