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Mathematics

1 answer:

elena55 [62]4 years ago

3 0

I think the answer is D, 28*11=308 plus the 12*14 equals 476. The answer is D

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Simplify -3d^8(-4d^-14) . Assume d=/0 .

Llana [10]

$\text{Use}\ a^n\cdot a^m=a^{n+m}\\\\-3d^8(-4d^{-14})=(-3)(-4)d^{8+(-14)}=12d^{-6}$

4 0

3 years ago

Read 2 more answers

Please help 8points

S_A_V [24]

Answer:

(6,32)

Step-by-step explanation:

The easier way to find the vertex is writing the equation as follow :

$y = a(x-h)^{2} + k$

where (h,k) is the vertex

your equation is in the form of :

$y=ax^{2} +bx +c$

The easier way is to complete squares:

$y = -(x^{2}-12x)-4 \\y = -(x^{2}-2(6x))-4 \\y = -(x^{2}-2(6x)+36-36)-4 \\y = -(x-6)^2+32 \\$

So the vertex is (6,32

5 0

4 years ago

Write the equation of the line that passes through the points (4,7) and (1,9) in point-slope form.

Nesterboy [21]

$(\stackrel{x_1}{4}~,~\stackrel{y_1}{7})\qquad (\stackrel{x_2}{1}~,~\stackrel{y_2}{9}) \\\\\\ \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{9}-\stackrel{y1}{7}}}{\underset{run} {\underset{x_2}{1}-\underset{x_1}{4}}} \implies \cfrac{9 -7}{1 -4} \implies \cfrac{ 2 }{ -3 } \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{7}=\stackrel{m}{-\cfrac{2}{3}}(x-\stackrel{x_1}{4})$