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3 years ago

What is the answer of 17 and 16

Mathematics

1 answer:

Vera_Pavlovna [14]3 years ago

6 0

Answer:

Step-by-step explanation:

16) Cost price = Selling price * 100 / (100- loss%)

= 800 * 100 / 80 = 10*100 = 1000

Loss = Cost Price - Selling price = 1000 -800 = 200

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12 43 a а- 5 6 b + 8 7 Line a is parallel to line b, m 2 = 4x+44, and m 46 = 6x +36 . Find the value of x.

Soloha48 [4]

Answer:

m=−57/92,x=−43/4

Step-by-step explanation:

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3 years ago

Suppose f is a function of one variable that has a continuous second derivative. Show that for any constants a and b, the functi

salantis [7]

Answer:

We can find the solution using chain rule,

For instance, if u(x,y) = f(ax+by), then

$u_{x}(x,y) = a f^{'} (ax+by)$ which represents derivative of x with respect to x

and then derivative of $u_{x}(x,y)$ with respect to y is

$u_{xy}(x,y) = (ab)^2 (f^{''} (ax+by))^2$ ,

Now, the derivative of $u_{x}(x,y)$ with respect to x, which is the second derivative, which is

$u_{xx}(x,y) = a^2 f^{''} (ax+by)$

and the derivative $u_{y}(x,y)$ and $u_{yy}(x,y)$ are

$u_{y}(x,y) = b f^{'} (ax+by)$ ,

$u_{yy}(x,y) = b^2 f^{''} (ax+by)$

Finally, the solution of PDE is

$u_{xx}(x,y) u_{yy}(x,y) - u_{xy} ^2 (x,y)$

$= (a^2 f^{''} (ax+by)) (b^2 f^{''} (ax+by)) - (ab)^2 (f^{''} (ax+by))^2$

$= (ab)^2 (f^{''} (ax+by))^2) - (ab)^2 (f^{''} (ax+by))^2$

= 0,

As the PDE is equal to 0, it means the function u(x,y) = f(ax+by) is the solution of the given PDE.

6 0

4 years ago

What value of x makes this proportion true 14/20=56/x

spayn [35]

Hey there,

x= (56×20)/14

x=80

6 0

4 years ago

Find the 8th term of the geometric sequence 10, -20, 40,

Ganezh [65]

Answer:

-1280

Step-by-step explanation:

10, -20, 40, -80, 160, -320, 640, -1280

The pattern of the sign is positive, negative, positive, so the 8th term is negative. Then the rule is times 2.

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3 years ago

June and Stella can each create six floral arrangements in one hour. If they take in 372 Valentineâs Day orders, how many hours

sesenic [268]

Answer:

31 hours

Step-by-step explanation:

June and Stella can create 6 floral arrangements in one hour.

They take in 372 Valentine's Day order

No of hours = orders / (June's rate + Stella's rate)

June's rate = 6 arrangements / hour

Stella's rate = 6 arrangements / hour

June's rate + Stella's rate = 2(6 arrangements /hour)

= 12 arrangements / hour

No of hours = 372 arrangements / 12 arrangements / hour

= 31 hours

June and Stella have 31 hours to fulfill the 372 Valentine's Day order

8 0

3 years ago

What is the answer of 17 and 16 ​

What is the answer of 17 and 16