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3 years ago

Help help help help help help

Mathematics

1 answer:

Dimas [21]3 years ago

6 0

Answer:

18.457

Step-by-step explanation:

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James buys a shirt and a pair of of socks on sale for 25% off. If the price of the shirt before the sale was $24 and he spent a

Eva8 [605]

Answer:

8 dollars

Step-by-step explanation:

Define the variable X as:

X = Original Price of the Socks, in units dollars

Then,

(X + 24)(100% - 25%) = 24

(X + 24)(0.75) = 24

X = (24/0.75) - 24 = 8 dollars.

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3 years ago

Let u = <-6, 1>, v = <-5, 2>. Find -4u + 2v.

Vera_Pavlovna [14]

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3 years ago

Pleez help meeeeeeeeeeeeeeeeeee

professor190 [17]

Answer:

i believe its A and D hope this helps:)

Step-by-step explanation:

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3 years ago

Find the limit, if it exists. (If an answer does not exist, enter DNE.)

gavmur [86]

Answer:

$\lim\limits_{(x,y)\rightarrow(0,0)}\left(\sqrt{x^2+y^2+49}+7\right)=14$

Step-by-step explanation:

to find the limit:

$\lim\limits_{(x,y)\rightarrow(0,0)}\left(\dfrac{x^2+y^2}{\sqrt{x^2+y^2+49}-7}\right)$

we need to first rationalize our expression.

$\dfrac{x^2+y^2}{\sqrt{x^2+y^2+49}-7}\left(\dfrac{\sqrt{x^2+y^2+49}+7}{\sqrt{x^2+y^2+49}+7}\right)$

$\dfrac{(x^2+y^2)(\sqrt{x^2+y^2+49}+7)}{(\sqrt{x^2+y^2+49}\,)^2-7^2}$

$\dfrac{(x^2+y^2)(\sqrt{x^2+y^2+49}+7)}{(x^2+y^2)}$

$\sqrt{x^2+y^2+49}+7$

Now this is our simplified expression, we can use our limit now.

$\lim\limits_{(x,y)\rightarrow(0,0)}\left(\sqrt{x^2+y^2+49}+7\right)\\\sqrt{0^2+0^2+49+7}\\7+7\\14$

Limit exists and it is 14 at (0,0)

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3 years ago

My number has 2 hundreds. The tens digit is 9 more than the ones digit. My number is?

kupik [55]

<span>If the number has 2 hundreds we know the first digit is 2. So far our answer is 2... If the tens digit is 9 more than the ones digit than the only possible answer would be 290 because 9 more than 0 is 9. So the final answer is 290.

Hope I helped:D

</span>

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3 years ago