Question

390+4900/k=460 ​ 230*a+40=10000/20

Answer 1

Ответ:

Пошаговое объяснение:

390+4900/к=460

4900/к=460-390

4900/к=70

к=4900:70

к=70

230*а+40=10000/20

230а+40=500

230а=500-40

230а=460

а=460:230

а=2

Answer 2

It looks like you have two equations involving two variables, k and a. Let's solve for these variables using the given equations:

Equation 1: $390 + \frac{4900}{k} = 460$

Equation 2: $230a + 40 = \frac{10000}{20}$

Let's start with the first equation:

$390 + \frac{4900}{k} = 460$

Subtract 390 from both sides:

$\frac{4900}{k} = 70$

Now, cross-multiply:

$4900 = 70k$

Divide both sides by 70:

$k = \frac{4900}{70}$

$k = 70$

Now, let's solve the second equation:

$230a + 40 = \frac{10000}{20}$

Simplify the right side:

$230a + 40 = 500$

Subtract 40 from both sides:

$230a = 460$

Divide both sides by 230:

$a = \frac{460}{230}$

$a = 2$

So, the solutions for the variables are $k = 70$ and $a = 2$.