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2 years ago

2.5 more than quotient of a and 4 is b

Mathematics

1 answer:

Dafna11 [192]2 years ago

6 0

answer:

a/4 + 2.5 = b

step-by-step explanation:

2.5 more than would mean it is being added
quotient means they are being divided
"is" means it is after the equal sign

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I’d appreciate the help!

Elis [28]

Answer:

$\displaystyle 1\frac{119}{250}\:liter$

$\displaystyle 7,5\:sleps$

$\displaystyle 37,3\:sleps$

Step-by-step explanation:

$\displaystyle 1\frac{119}{250} = \frac{1476}{1000}$

$\displaystyle 1\frac{1}{13} \times 7 = 7\frac{7}{13} ≈ 7,538461538 ≈ 7,5$

$\displaystyle \frac{41}{1\frac{1}{10}} = 37\frac{3}{11} ≈ 37,3$

I am joyous to assist you anytime.

4 0

2 years ago

Which means 30 is the product of 6 and a number b

Sav [38]

Just divide 30 by 6 and you get b=5

7 0

2 years ago

Need help on the last problem please.

pshichka [43]

Answer:

6 of x and 5 of y

Step-by-step explanation:

x = number of closets of the first type

y = number of closets of the second type

1200 = 100x + 120y

100 = 10x + 8y

10x = 100 - 8y

10x(100 - 8y) + 120y = 1200

1000 - 80y + 120y = 1200

40y = 200

y = 5

100 = 10x + 8×5 = 10x + 40

60 = 10x

x = 6

20x + 24y = max

20×6 + 24×5 = 120 + 120 = 240

6 0

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

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

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

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

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

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

$8+\ln9=C$

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

8 0

2 years ago

Can I have help please I am stuck on this question it would mean the world if u helped me have a nice day! =) <3

guajiro [1.7K]

Answer:

Step-by-step explanation:

1m = 100cm

0.8m = 100*0.8 = 80cm

5 0

2 years ago