Question

390+4900÷k=460 230×a+40=10000

Answer 1

Ответ:

390+4900:k=460

Пошаговое объяснени

Answer 2

To solve the equations, we'll work step by step:

Equation 1: 390 + 4900 ÷ k = 460

First, let's isolate the term containing the variable "k" by subtracting 390 from both sides:

390 + 4900 ÷ k - 390 = 460 - 390

Simplifying the left side:

4900 ÷ k = 70

To eliminate the division, we can multiply both sides of the equation by "k":

k * (4900 ÷ k) = k * 70

Simplifying the left side:

4900 = 70k

Now, divide both sides by 70 to solve for "k":

4900 ÷ 70 = 70k ÷ 70

70 = k

So, the value of "k" is 70.

Equation 2: 230 × a + 40 = 10000

To solve for "a," we'll isolate the term containing the variable by subtracting 40 from both sides:

230 × a + 40 - 40 = 10000 - 40

Simplifying the left side:

230 × a = 9960

To solve for "a," divide both sides by 230:

(230 × a) ÷ 230 = 9960 ÷ 230

a = 9960 ÷ 230

Simplifying the right side:

a ≈ 43.304

So, the approximate value of "a" is 43.304.