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3 years ago

For vectors t, u, v, and w defined as shown, select the TRUE equation.

Mathematics

1 answer:

Illusion [34]3 years ago

7 0

i dont really unserstand what this is?

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Charlene is twenty-five years younger than Nina. Charlene is thirty-nine. How old is Nina?

zimovet [89]

Nina is 64. I hope this is correct , let me know if it isn’t .

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3 years ago

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Help plz thanks question 1

Varvara68 [4.7K]

-2x^2 + 500x - 350

You need to plug in the equations for C(x) and R(x) into the equation P(x)= R(x) - C(x) and solve.

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3 years ago

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Help!!!!

OverLord2011 [107]

Answer:

$Slope (m) = -\frac{2}{3}$

Step-by-step explanation:

To find the slope of the line of the graph, pick any 2 points on the line as your coordinate pairs.

Thus, on the line, let's pick 2 points as our coordinate pairs at:

When x = -6, y = 5 => (-6, 5), and

When x = 3, y = -1 => (3, -1)

Let (-6, 5) be (x1, y1), and (3, -1) be (x2, y2)

$Slope (m) = \frac{y2 - y1}{x2 - x1}$

$Slope (m) = \frac{-1 - 5}{3 - (-6)}$

$Slope (m) = \frac{-1 - 5}{3 + 6}$

$Slope (m) = \frac{-6}{9}$

$Slope (m) = -\frac{2}{3}$

3 0

4 years ago

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Helen paid $246 for three jeans from her favourite clothing store. How much did she pay for each jeans she bought?

Natali5045456 [20]

Answer:

estimate: $80

exact amount paid: $82

Step-by-step explanation:

If you round $246 to 240, then divide it by 3, you should get $80. The cost per pair should be around $80 each

For the exact answer you take the amount spent (246) and divide it by the amount of jeans she bought (3).

246/3 = 82

7 0

3 years ago

It is given that m=3x+1 and y= (5/1+m^2).<br>Find dy/dx in terms of x.<br>

DiKsa [7]

Answer:

${ \underline{ \bf{ \frac{dy}{dx} = - \frac{30m}{ {(1 + {m}^{2}) }^{2} } }}}$

Step-by-step explanation:

${ \bf{m = 3x + 1}} \\ { \sf{ \frac{dm}{dx} = 3 }} \\ \\ { \bf{y = \frac{5}{1 + {m}^{2} } }} \\ \\ { \tt{ \frac{dy}{dm} = \frac{ - 10m}{ {(1 + {m}^{2} )}^{2} } }}$

Using chain rule:

${ \boxed{ \bf{ \frac{dy}{dx} = \frac{dy}{dm}. \frac{dm}{dx} }}}$

${ \sf{ \frac{dy}{dx} = - \frac{10m}{ {(1 + {m}^{2}) }^{2} } \times 3}} \\ \\ { \sf{ \frac{dy}{dx} = - \frac{30m}{ {(1 + {m}^{2}) }^{2} } }}$

${ \underline{ \sf{ \blue{christ \:† \: alone }}}}$

8 0

3 years ago

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