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3 years ago

Simply the following expression 35 +(-13)+(8)-(-6)

Mathematics

1 answer:

soldier1979 [14.2K]3 years ago

7 0

35 + (-13) + (8) - (-6)

22 + (8) - (-6)

30 - (-6)

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The width of a rectangular table is 2.3 feet less than its length. If the area of the table is 9.5 square feet, find its dimens

stellarik [79]

Answer: Width = 12 feet

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2 years ago

Show that ( 2xy4 + 1/ (x + y2) ) dx + ( 4x2 y3 + 2y/ (x + y2) ) dy = 0 is exact, and find the solution. Find c if y(1) = 2.

fredd [130]

$\dfrac{\partial\left(2xy^4+\frac1{x+y^2}\right)}{\partial y}=8xy^3-\dfrac{2y}{(x+y^2)^2}$

$\dfrac{\partial\left(4x^2y^3+\frac{2y}{x+y^2}\right)}{\partial x}=8xy^3-\dfrac{2y}{(x+y^2)^2}$

so the ODE is indeed exact and there is a solution of the form $F(x,y)=C$ . We have

$\dfrac{\partial F}{\partial x}=2xy^4+\dfrac1{x+y^2}\implies F(x,y)=x^2y^4+\ln(x+y^2)+f(y)$

$\dfrac{\partial F}{\partial y}=4x^2y^3+\dfrac{2y}{x+y^2}=4x^2y^3+\dfrac{2y}{x+y^2}+f'(y)$

$f'(y)=0\implies f(y)=C$

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With $y(1)=2$ , we have

$8+\ln9=C$

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2 years ago

Yemi saves 150 daily how much will it save in two weeks

Leokris [45]

Answer:

$2,100

Step-by-step explanation:

In two weeks there is 14 days so, I times 150 by 14 which is 2100.

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3 years ago

Read 2 more answers

I need help and please show me work?!

jek_recluse [69]

Answer:

44,51

Step-by-step explanation:

It is cut off, but according to the Order of Operations [GEMS(A)\BOMDAS\PEMDAS etc.], parentheses are dealt with first:

(13,1 × 3) + 5,21 = 44,51

39,3

Just like whole numbers, you multiply the exact same way.

I am joyous to assist you anytime.

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3 years ago

What is an equation for the linear function whose graph contains the points (9, 7) and (4, −8) ?

aalyn [17]

Y=mx+b where m=slope which is change in y divided by change in x m=(-8-7)/(4-9)=-15/-5=3 so we have y=3x+b now we can use either point, I'll use (9,7), to solve for b or the y-intercept... 7=3(9)+b 7=27+b b=-20so our line is: y=3x-20

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2 years ago