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3 years ago

What is -7 2/7 + 6 5/7

Mathematics

1 answer:

Alexandra [31]3 years ago

3 0

Answer:

Answer is

Step-by-step explanation:

How this helps you can’t type explanations cause I’m in a hurry

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A recent survey asked 100 randomly selected adult Americans if they thought that women should be allowed to go into combat situa

ArbitrLikvidat [17]

Answer:

26/25

Step-by-step explanation:

total number of men/ total sample + total number of people that answered no / total sample

total male = 32 + 18 = 50

total sample = 100

total no 18 + 34 = 52

50/ 100 + 52/100 = 102/100 = 52/50 = 26/25

3 0

3 years ago

20 PTS! Help!<br> How do you solve the following:

Sonja [21]

Answer: $3x^2-x+2$

Explanation:

The area of a triangle A can be calculated as A=(height)x(base)/2

We know the height is 6x.

We know $A=9x^3-3x^2+6x$

So the equation becomes (using |AC| as the base length):

$9x^3-3x^2+6x = \frac{6x \cdot |AC|}{2}\\\frac{9x^3-3x^2+6x}{3x}=|AC|\\\frac{3x^2-x+2}{1}=|AC|\\|AC|=3x^2-x+2$

The base is $3x^2-x+2$

8 0

4 years ago

What is the solution to this equation? 2x+2=10

mrs_skeptik [129]

X=4 ........................................

8 0

3 years ago

Read 2 more answers

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

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

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

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

$\implies F(x,y)=x^2y^3+\ln(x+y^2)=C$

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

$8+\ln9=C$

$\boxed{x^2y^3+\ln(x+y^2)=8+\ln9}$

8 0

3 years ago

Need to be sure that 23 and 24 is correct help !!!!

krok68 [10]

I’m not sure what you are talking about is there a picture or something because I do not see what you are talking about

4 0

4 years ago