3 years ago

kristi made an error when she used the distributive property to slove the problem shown sentence describes the error?

Mathematics

1 answer:

Svetlanka [38]3 years ago

3 0

Answer:

in step 2, to 120 should be multiplied by the quantity 20-15 , not 20 .

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What is 40/90 simplified?

BabaBlast [244]

This would be 4/9 since You can divide both by ten and nothing else after that due to the fact that they both end in 0 and are multiples of 10 making the answer 4/9

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Answer:

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Step-by-step explanation:

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3 years ago

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3 years ago

Write the equation of the conic section satisfying the given conditions. focus at the pole, e = 3/4, horizontal directrix 2 unit

hjlf

Answer:

The equation in the polar form is;

$r = \dfrac{6}{4 + 3 \cdot sin(\theta)}$

Step-by-step explanation:

e = 3/4 > 1, we have an hyperbola

The polar equation of a conic is of the form;

For vertical directrix

$r = \dfrac{k \cdot e}{1\pm e \cdot cos (\theta)}$

For horizontal directrix

$r = \dfrac{k \cdot e}{1\pm e \cdot sin(\theta)}$

Where;

k = Distance from the focus to the directrix = 2

We have;

$r = \dfrac{2 \cdot \dfrac{3}{4} }{1 + \dfrac{3}{4} \cdot sin(\theta)}$

$r = \dfrac{\dfrac{3}{2} }{1 + \dfrac{3}{4} \cdot sin(\theta)}$

Which gives the equation in the polar form as follows;

$r = \dfrac{6}{4 + 3 \cdot sin(\theta)}$ .

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3 years ago

kristi made an error when she used the distributive property to slove the problem shown sentence describes the error?​

kristi made an error when she used the distributive property to slove the problem shown sentence describes the error?