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ludmilkaskok [199]
3 years ago
12

What is 8(7x-2)-x=424 ?

Mathematics
1 answer:
valina [46]3 years ago
3 0
X=8 i did mental math but 56x-16-x=424
                                            +16      +16
                                              55x=440
                                               /55  /55
                                                x=8
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mr_godi [17]
A^2 + B^2 = C^2
7^2 + B^2 = 25^2
49 + B^2 = 625
-49 -49
B^2 = 576
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B = 24
4 0
3 years ago
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the endpoints of the side of rectangle ABCD in the coordinate plane are A (3,7)and B(4,1).Find the equation of the line that con
Elden [556K]

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1,6


Step-by-step explanation:


5 0
4 years ago
John swims 2.5 miles and sees a total of 12 fishes if he swims 8 miles how many fish will he see
Zolol [24]

Answer:

Step-by-step explanation:

2.5 miles = 12 fishes

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5 0
1 year ago
P= -4b^2+6b-9<br> Q= 7b^2-2b-5<br> P-Q=
insens350 [35]

Answer:

P - Q = - 11b² + 8b - 4

Step-by-step explanation:

P - Q

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= - 4b² + 6b - 9 - 7b² + 2b + 5 ← collect like terms

= - 11b² + 8b - 4

5 0
3 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

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

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8+\ln9=C

so

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

8 0
3 years ago
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