Question

X*18=270 x/16=30 4-0,5b при b=0,9 1,5х+у при х=9, у=6,5.

Answer 1

Ответ:

1) x=15

2) x=480

3) 4,4

4) 17

Пошаговое объяснение:

1) 18x=270 (делим обе части на 18)

2) 1/16x=30 (умножить обе части на 16)

3) 4-0,5+0,9

4) 1,5+9+6,5

Answer 2

Let's solve each equation step by step:

1. Solve for x in the equation: X*18 = 270

To find the value of x, we need to isolate it on one side of the equation. To do that, we'll divide both sides of the equation by 18:

X*18 = 270 X = 270 / 18 X = 15

So, the value of x is 15.

2. Solve for x in the equation: x/16 = 30

Again, we'll isolate x by multiplying both sides of the equation by 16:

x/16 = 30 x = 30 * 16 x = 480

So, the value of x is 480.

3. Evaluate the expression: 4 - 0.5b, when b = 0.9

Simply plug in the value of b into the expression:

4 - 0.5 * 0.9 4 - 0.45 3.55

So, when b = 0.9, the expression evaluates to 3.55.

4. Evaluate the expression: 1.5x + y, when x = 9 and y = 6.5

Substitute the given values for x and y into the expression:

1.5 * 9 + 6.5 13.5 + 6.5 20

So, when x = 9 and y = 6.5, the expression evaluates to 20.