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3 years ago

Is anyone good at Personal finance math?

Mathematics

1 answer:

erastova [34]3 years ago

4 0

Answer:

ya I am good at personal finance math

Step-by-step explanation:

FOLLOW MY ACCOUNT PLS PLS

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Please help me with this question

masha68 [24]

I don’t see the question

8 0

3 years ago

Marissa rode her bike to the park and back home. She lives 2 and 3/10 miles from the park. How many miles did Marissa ride her b

solmaris [256]

2 $\frac{3}{10}$ * 2
this can be shortened to :
$\frac{23}{10}* \frac{2}{1}= \frac{23*2}{10} = \frac{46}{10}=4 \frac{6}{10} = 4 \frac{3}{5}$

3 0

3 years ago

Can you define f(0, 0) = c for some c that extends f(x, y) to be continuous at (0, 0)? If so, for what value of c? If not, expla

Ahat [919]

(i) Yes. Simplify $f(x,y)$ .

$\displaystyle \frac{x^2 - x^2y^2 + y^2}{x^2 + y^2} = 1 - \frac{x^2y^2}{x^2 + y^2}$

Now compute the limit by converting to polar coordinates.

$\displaystyle \lim_{(x,y)\to(0,0)} \frac{x^2y^2}{x^2+y^2} = \lim_{r\to0} \frac{r^4 \cos^2(\theta) \sin^2(\theta)}{r^2} = 0$

This tells us

$\displaystyle \lim_{(x,y)\to(0,0)} f(x,y) = 1$

so we can define $f(0,0)=1$ to make the function continuous at the origin.

Alternatively, we have

$\dfrac{x^2y^2}{x^2+y^2} \le \dfrac{x^4 + 2x^2y^2 + y^4}{x^2 + y^2} = \dfrac{(x^2+y^2)^2}{x^2+y^2} = x^2 + y^2$

and

$\dfrac{x^2y^2}{x^2+y^2} \ge 0 \ge -x^2 - y^2$

Now,

$\displaystyle \lim_{(x,y)\to(0,0)} -(x^2+y^2) = 0$

$\displaystyle \lim_{(x,y)\to(0,0)} (x^2+y^2) = 0$

so by the squeeze theorem,

$\displaystyle 0 \le \lim_{(x,y)\to(0,0)} \frac{x^2y^2}{x^2+y^2} \le 0 \implies \lim_{(x,y)\to(0,0)} \frac{x^2y^2}{x^2+y^2} = 0$

and $f(x,y)$ approaches 1 as we approach the origin.

(ii) No. Expand the fraction.

$\displaystyle \frac{x^2 + y^3}{xy} = \frac xy + \frac{y^2}x$

$f(0,y)$ and $f(x,0)$ are undefined, so there is no way to make $f(x,y)$ continuous at (0, 0).

(iii) No. Similarly,

$\dfrac{x^2 + y}y = \dfrac{x^2}y + 1$

is undefined when $y=0$ .

5 0

1 year ago

11900cm = yard(s)?<br> show work.

AnnZ [28]

Answer:

≈130.14 yards

Step-by-step explanation:

$\:\:\:1\:cm\:\:\:\:\:\: =0.0109361\:yards\\11900\:cm = \:x\:yards$

Cross Multiply

$x = 11900\times 0.0109361\\\\x = 130.13959\\\\x = 130.14 \:yards$

6 0

3 years ago

Can someone please help?

mixas84 [53]

Answer:

C.) Solve for the varible

Step-by-step explanation:

As there is currently nothing to do other than one step, the next step would be to solve 81/9 for 9, getting the final answer of a=9.

4 0

3 years ago

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