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4 years ago

Help with number 9 please

Mathematics

1 answer:

LekaFEV [45]4 years ago

3 0

Answer:

Step-by-step explanation:

i cant see it

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A table weighs 1.23 pounds.what is its weight written as a mixed number

Lemur [1.5K]

2 23/100 hope that helps

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3 years ago

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Please help its timed

stiks02 [169]

Answer:

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3 years ago

How would you do this?

sdas [7]

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4 years ago

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Find all points on the circle (x^2) + (y^2) = 676 where the slope is 5/12

borishaifa [10]

Implicit defferentation

remember that dy/dx y= dy/dx

so
take derivitive of both sides
$2x+2y \space\ \frac{dy}{dx}=0$
solve for $\frac{dy}{dx}$
minus 2x both sides
$2y \space\ \frac{dy}{dx}=-2x$
divide both sides by 2y
$\frac{dy}{dx}=\frac{-2x}{2y}$
$\frac{dy}{dx}=\frac{-x}{y}$

when is the slope equal to $\frac{5}{12}$
solve for $\frac{dy}{dx}=\frac{5}{12}$
$\frac{dy}{dx}=\frac{5}{12}$
$\frac{5}{12}=\frac{-x}{y}$
$5y=-12x$
$y=\frac{-12}{5}x$
find where the circle and this line intersects

substitute $\frac{-12}{5}x$ for y
$x^2+(\frac{-12}{5}x)^2=676$
$x^2+\frac{144}{25}x^2=676$
$\frac{25}{25}x^2+\frac{144}{25}x^2=676$
$\frac{169}{25}x^2=676$
times both sides by $\frac{25}{169}$
$x^2=100$
sqrt both sides, take positive and negative roots
x=+/-10

sub back

$y=\frac{-12}{5}x$
$y=(\frac{-12}{5})(10) \space\ or \space\ (\frac{-12}{5})(-10)$
$y=\frac{-120}{5} \space\ or \space\ \frac{120}{5}$
$y=-24 \space\ or \space\ 24$

the points are (10,-24) and (-10,24)

8 0

3 years ago

Alexis divided a 5/12 pound bag of apples among her five friends. How many pounds of apples did each friend receive?

Goshia [24]

Answer: 1 /12 pounds each

Step-by-step explanation:

Alexis has a 5/12 pound bag of apples and 5 friends to divide them amongst.

The number of pounds each friend receives is the number of pounds Alexis has divided by the number of friends she has:

= 5/12 ÷ 5

= 5/12 * 1/5

= 5 / 60

Take the fraction to the lowest form by dividing by 5:

= 1 / 12

<em>Hint: When dividing a fraction by a number, you can instead multiply that fraction by the inverse of that number. </em>

3 0

3 years ago