Ask question

Ask question

All categories

3 years ago

12

1/3 plus 4/7 divided by 3/10

2 answers:

lakkis [162]3 years ago

8 0

Answer:

$\frac{47}{21}$ is the answer

Step-by-step explanation:

$\frac{1}{3} +\frac{4}{7} = \frac{19}{21}$

$\frac{19}{21} divide \frac{3}{10}$

ik this doesnt rlly make any sense but hope this helps

devlian [24]3 years ago

6 0

Answer:

47/21

Step-by-step explanation:

$\frac{1}{3} + \frac{4}{7} \div \frac{3}{10} \\\\\mathrm{Apply\:the\:fraction\:rule}:\quad \frac{a}{b}\div \frac{c}{d}=\frac{a}{b}\times \frac{d}{c}\\=\frac{1}{3}+\frac{4}{7}\times \frac{10}{3}\\\\\frac{4}{7}\times \frac{10}{3}=\frac{40}{21}\\=\frac{1}{3}+\frac{40}{21}\\\\\mathrm{Least\:Common\:Multiplier\:of\:}3,\:21:\quad 21\\\\\mathrm{Adjust\:Fractions\:based\:on\:the\:LCM}\\=\frac{7}{21}+\frac{40}{21}\\\\=\frac{7+40}{21}\\\\=\frac{47}{21}$

You might be interested in

Dy/dx= y^4 and y(2)= -1. Y(-1)=

cupoosta [38]

It looks like you're asked to find the value of y(-1) given its implicit derivative,

$\dfrac{dy}{dx} = y^4$

and with initial condition y(2) = -1.

The differential equation is separable:

$\dfrac{dy}{y^4} = dx$

Integrate both sides:

$\displaystyle \int \frac{dy}{y^4} = \int dx$

$-\dfrac1{3y^3} = x + C$

Solve for y :

$\dfrac1{3y^3} = -x + C$

$3y^3 = \dfrac1{-x+C} = -\dfrac1{x + C}$

$y^3 = -\dfrac1{3x+C}$

$y = -\dfrac1{\sqrt[3]{3x+C}}$

Use the initial condition to solve for C :

$y(2) = -1 \implies -1 = -\dfrac1{\sqrt[3]{3\times2+C}} \implies C = -5$

Then the particular solution to the differential equation is

$y(x) = -\dfrac1{\sqrt[3]{3x-5}}$

and so

$y(-1) = -\dfrac1{\sqrt[3]{3\times(-1)-5}} = \boxed{\dfrac12}$

6 0

2 years ago

Can y’all help me on question 23?!

Wittaler [7]

Answer:

Option D. 5x + 12y + 4z is the corrct one.

5 0

2 years ago

Read 2 more answers

Ian and his brother are driving from city A to city B. The two cities are 282 miles apart. Ian drives at 47 miles per hour. How

leva [86]

I got 6 hours for this one.

6 0

3 years ago

Solve algebra 2 bju press

Nitella [24]

Remark

It looks like all you want is question 6. If that is the case, there are two ways to do it.

Algebra

<u>First answer</u>

abs(b - 22) = 5 Equate to + 5

b - 22 = 5 Add 22 to both sides.

b = 5 + 22

b = 27

<u>Second Answer</u>

Equate to - 5

b - 22 = -5

b = 22 - 5

b = 17

Method Two

<u>Graph the question</u>

The graph y = abs(b - 22) is shown below in red.

The values of y when y =5 are shown in blue.

5 0

3 years ago

The equation P= 21 + 2w models the perimeter, P, of a rectangle with a length of / units and a width of w units.

natima [27]

Answer:

width = 10 units and length = 20 units

Step-by-step explanation:

Let the width be w

so Length will be 2w

using the rectangle formula:

$\sf Perimeter \ of \ rectangle= 2L + 2W$

$\sf 60= 2(2w) + 2w$

$\sf 60= 4w + 2w$

$\sf 60= 6w$

$\sf w = 10 \ units$

Find length:

$\sf length = 2w$

$\sf length = 2(10)$

$\sf length = 20 \ units$

5 0

2 years ago

Read 2 more answers