Question

Номер 1 Чему равен x в равенстве? а)-x=5/8 б)-x=-4,9 в)-(-x)=6 целых 1/3 г)-x=-0,0008 Номер 2 Упрости запись: а)|-(-55)| б)-|-65,0,9| Номерь 3 Решите уравнение: а)|-x|=25 б)|y|=80 Номер 4 а)-36+(-64) б)100+(-270) в)-0,2+9,2 г)-3/50+(-0,02)

Answer 1

Ответ:
Номер 1
а) х = -5/8
б) х = 4,9
в) х = 6 1/3
г) х = 0.0008
Номер 2
а) 55
б) - 65,0,9
Номер 3
а) х = 25
б) у = 80
Номер 4
а) -100
б) -170
в) 9
г) -0.08

Answer 2

Номер 1: Чему равен x в равенстве?

а) -x = 5/8 б) -x = -4,9 в) -(-x) = 6 целых 1/3 г) -x = -0,0008

а) -x = 5/8: To find the value of x, we can multiply both sides of the equation by -1 to isolate x. This gives us: x = -5/8

б) -x = -4,9: Similarly, to find the value of x, we can multiply both sides of the equation by -1: x = 4,9

в) -(-x) = 6 целых 1/3: In this equation, we have a double negative, which cancels out. So we can rewrite the equation as: x = 6 целых 1/3

г) -x = -0,0008: To find the value of x, we can multiply both sides of the equation by -1: x = 0,0008

So the values of x in the given equations are: а) x = -5/8 б) x = 4,9 в) x = 6 целых 1/3 г) x = 0,0008

Номер 2: Упрости запись:

а) |-(-55)| б) -|-65,0,9|

а) |-(-55)|: To simplify this expression, we can remove the double negative sign: |-(-55)| = |55| = 55

б) -|-65,0,9|: It seems that there might be some confusion in the expression |-65,0,9|. Could you please clarify what you mean by "65,0,9"? If you are referring to a list of numbers, please provide more information so that I can assist you further.

Номер 3: Решите уравнение:

а) |-x| = 25 б) |y| = 80

а) |-x| = 25: To solve this equation, we can consider two cases: when x is positive and when x is negative.

When x is positive: |-x| = 25 -x = 25 x = -25

When x is negative: |-x| = 25 x = 25

So the solutions to the equation |-x| = 25 are x = -25 and x = 25.

б) |y| = 80: Similar to the previous equation, we consider two cases: when y is positive and when y is negative.

When y is positive: |y| = 80 y = 80

When y is negative: |y| = 80 y = -80

So the solutions to the equation |y| = 80 are y = 80 and y = -80.

Номер 4:

а) -36 + (-64) б) 100 + (-270) в) -0,2 + 9,2 г) -3/50 + (-0,02)

а) -36 + (-64): To simplify this expression, we can add the two numbers together: -36 + (-64) = -100

б) 100 + (-270): Similarly, we can add the two numbers together: 100 + (-270) = -170

в) -0,2 + 9,2: Adding the two numbers gives us: -0,2 + 9,2 = 9

г) -3/50 + (-0,02): To add these fractions, we need to find a common denominator, which in this case is 50. Then we can add the numerators: -3/50 + (-0,02) = -3/50 + (-2/100) = -3/50 - 1/50 = -4/50 = -2/25

So the simplified forms of the given expressions are: а) -36 + (-64) = -100 б) 100 + (-270) = -170 в) -0,2 + 9,2 = 9 г) -3/50 + (-0,02) = -2/25