Question

10 • (1/2)²+9 • 1/2 = 0,9 • (-10)²-120 = С решением

Answer 1

1)
$(\frac{1}{2 } )^{2} = \frac{1}{2} \times \frac{1}{2} = \frac{1}{4}$
$10 \times \frac{1}{4} = \frac{5}{2}$
$9 \times \frac{1}{2} = \frac{9}{2}$
$\frac{5}{2} + \frac{9}{2} = \frac{14}{2} = 7$
2)
$( { - 10)}^{2} = 100$
$0.9 \times 100 = 90$
$90 - 120 = - 30$

Answer 2

Let's solve the given mathematical expression step by step:

1. First, simplify the left-hand side: 10 • (1/2)² + 9 • 1/2 = 10 • (1/4) + 9 • 1/2 = 10/4 + 9/2 = 2.5 + 4.5 = 7

2. Now, simplify the right-hand side: 0.9 • (-10)² - 120 = 0.9 • 100 - 120 = 90 - 120 = -30

So, the given equation becomes: 7 = -30

Now, it is clear that the equation is not valid since 7 cannot be equal to -30. Therefore, there is no solution to this equation.