15 times 6 is 90. This is how much money he spends on 6 DVDs if they're all $15. 90 subtracted by 5 (remember - he gets $5 off his entire purchase, not just each individual DVD) would be 85!

4 0

3 years ago

What is (f - g)(x)? f (x) = 24 – 22 + 9 9(2) = 23 + 3x2 + 12 (f - g)(x) = ???

bija089 [108]

Answer:

(f - g)(x) = x^4 - x^3 - 4x^2 - 3

Step-by-step explanation:

Subtract g(x)=x^3 + 3x^2 + 12 from f(x)= x^4 - x^2 + 9

First, take the negative of every term (including the label g(x) ) of g(x), obtaining -g(x) = -x^3 - 3x^2 - 12.

Now combine this result with f(x):

f(x)= x^4 - 0x^3 - x^2 + 9

-g(x) = - 1x^3 - 3x^2 - 12

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(f - g)(x) = x^4 - x^3 - 4x^2 - 3

7 0

3 years ago

Find the equation of the line that goes through the points (4, –1) and (2, –5).

exis [7]

$\bf (\stackrel{x_1}{4}~,~\stackrel{y_1}{-1})\qquad (\stackrel{x_2}{2}~,~\stackrel{y_2}{-5}) \\\\\\ slope = m\implies \cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{-5-(-1)}{2-4}\implies \cfrac{-5+1}{-2}\implies \cfrac{-4}{-2}\implies 2 \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-(-1)=2(x-4) \\\\\\ y+1=2x-8\implies y=2x-9$

7 0

4 years ago

Read 2 more answers

Martha estimated there were 83 marbles in a jar for a contest. The actual number of marbles in the jar was 105. What was the per

Luba_88 [7]

Answer:

26.5%

Step-by-step explanation:

i did the math, that answer should be correct, but the question is stated strange.

4 0

3 years ago