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4 years ago

In one school, 5/6 of the sixth-graders take a foreign. Of these students take, 2/5 take French.

Mathematics

1 answer:

allochka39001 [22]4 years ago

5 0

2/5 of them take french

Just multiply 250 by 2/5 and you have your answer for #2!.

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Please also provide details steps to this answer. PLEASE HELP ME!

Ivahew [28]

Answer:

Step-by-step explanation:

First, to make things simpler, let's create a common denominator for every term. We can do this by multiplying (x+4) and (x+3) when the denominator has a (x+3) or (x+4), respectively. In other words:

$(\frac{3}{x+3} -\frac{4}{x+4})\div (\frac{2x}{x+3}-\frac{x}{x+4})$

$(\frac{3(x+4)}{(x+3)(x+4)}-\frac{4(x+3)}{(x+4)(x+3)}) \div (\frac{2x(x+4)}{(x+3)(x+4)} -\frac{x(x+3)}{(x+4)(x+3)} )$

Now that they all have a common denominator, we can combine them:

$(\frac{3(x+4)-4(x+3)}{(x+3)(x+4)})\div (\frac{2x(x+4)-x(x+3)}{(x+3)(x+4)} )$

Now, divide them. Recall how to divide fractions. You "flip" the second term and change the division sign into a multiplication sign.

$=(\frac{3(x+4)-4(x+3)}{(x+3)(x+4)})\cdot (\frac{(x+3)(x+4)}{2x(x+4)-x(x+3)} )$

Notice the denominator of the first term and the numerator of the second; we can cancel them out.

$=\frac{3(x+4)-4(x+3)}{2x(x+4)-x(x+3)}$

Now, we just need to simplify.

$=\frac{(3x+12)+(-4x-12)}{(2x^2+8x)+(-x^2-3x)} =\frac{-x}{x^2+5x} =\frac{-1}{x+5}=-\frac{1}{x+5}$

8 0

3 years ago

Read 2 more answers

HELP me with These questions

Feliz [49]

Answer: 13.96 in²

Step-by-step explanation:

radius (r)

d = 2r

16 = 2r

8 = r

angle in radians (θ)

$\frac{180}{\pi} =\frac{25}{\theta}$

180(θ) = 25(π)

θ = $\frac{25}{180}\pi$

θ = $\frac{5}{36}\pi$

Area (A)

A = $\frac{1}{2}$ r² θ

= $\frac{1}{2}(8)^{2}(\frac{5}{36}\pi)$

= $\frac{40}{9}\pi$

= 13.96

*************************************************************************

Answer: 12π

Step-by-step explanation:

s = rθ

= 60 $(\frac{\pi }{5})$

= 12π

*************************************************************************

Answer: 22.440 cm²

Step-by-step explanation:

A = $\frac{1}{2}$ r²θ

= $\frac{1}{2}$ (10)² $(\frac{\pi} {7})$

= $\frac{50}{7}\pi$

= 22.440

*************************************************************************

Answer: 270°, 630°, -450°, -810°

Step-by-step explanation:

positive: -90 + 360 = 270

270 + 360 = 630

negative: -90 - 360 = -450

-450 - 360 = -810

*************************************************************************

Answer: $\frac{3\pi} {4}$

Step-by-step explanation:

$\frac{19\pi} {4} - 2\pi$

= $\frac{19\pi} {4} - \frac{8\pi} {4}$

= $\frac{11\pi} {4}$

$\frac{11\pi}{4} - 2\pi$

= $\frac{11\pi} {4} - \frac{8\pi} {4}$

= $\frac{3\pi} {4}$

If you subtract another 2π, you will end up with a negative value. The question asks for the smallest positive value.

5 0

4 years ago

Write two division problems that have zero in the quotient. one of the problems should have a remainder and the other should not

kolbaska11 [484]

Yes that is it is 8djudiejeh

8 0

3 years ago

The gas tank of a Mauer holds 5 L of gas how many 5 L castings can you feel from a bowl 20 L gas can

Grace [21]

20= 5 times as many fill ups divide both sides 5 20/5=5/5 times how many fill ups 4=1 how many fill ups so it’s 4 tanks

6 0

3 years ago

Evaluate each expression, 11,12,13

ExtremeBDS [4]

1. -20
2. 9
3. -25
Hope this helps

3 0

3 years ago

Read 2 more answers