Question

Ребята!!!Срочно нужна помощь по математике!!Прошу №1 Запишите результаты сложения -23+(-87)= -304+(-96)= -8,9+(-8,9)= -7целых семь восьмих +(- 7целых одна шестнадцатая)= №2 Вычислите значение выражений A+X если A=-44,25;X=29,5 -пять шестых + А если А=-15,3 №3 Угадайте корень уравнения У+(-0,5)=1 №4 Сложите числа 25,16+(-0,6)= -3 целых одна седьмая + 19= -0,125 +1= 4целых одна седьмая +(-две седьмых) №5 Вычислите значение выражения -160+(-одна вторая +2,5)= №6 Выполните вычитание -2 целых три десятых -1,1= 10-2,25= 0-130,8= -15-(-5целых одна восьмая)= №7 Решите уравнение 10-У =-12целых семь восьмых

Answer 1

-23+(-87)=-23-87=-110
-304+(-96)=-304-96=-400
-8,9+(-8,9)=-8,9-8,9=-17,8
-7 7/8 +(- 7 1/16)=-7 7/8-7 1/16=
-14 14/16-1/16=-14 13/16

-44,25+29,5=-14, 75
-5,6+ (-15,3)=-5,6-15,3=-20,9

У+(-0,5)=1
У=1+0,5
У=1,5

25,16+(-0,6)=25,16-0,6=24,56
-3 1/7 + 19=15 6/7
-0,125 +1=0,875
4 1/7 +(-2/7)=4 1/7-2/7=3 6/7

-160+(-одна вторая +2,5)=-160-0,5+2,5=-158

-2, 3 -1,1=-3,4
10-2,25=7,75
0-130,8=-130,8
-15-(-5 1/8)=-15+5 1/8=-9 7/8

10-У =-12 7/8
-у=-12 7/8-10
У=-22 7/8

Answer 2

№1: Результаты сложения To find the results of the given additions, let's solve each one step by step:

1. -23 + (-87) To add two negative numbers, we add their absolute values and assign a negative sign to the sum. So, |-23| + |-87| = 23 + 87 = 110. Since both numbers are negative, the result is -110.

Therefore, -23 + (-87) = -110.

2. -304 + (-96) Similar to the previous addition, we add the absolute values and assign a negative sign to the sum. |-304| + |-96| = 304 + 96 = 400. Since both numbers are negative, the result is -400.

Therefore, -304 + (-96) = -400.

3. -8.9 + (-8.9) We add the absolute values: |-8.9| + |-8.9| = 8.9 + 8.9 = 17.8. Since both numbers are negative, the result is -17.8.

Therefore, -8.9 + (-8.9) = -17.8.

4. -7 целых семь восьмих + (-7 целых одна шестнадцатая) To add fractions, we need to have a common denominator. In this case, the common denominator is 16. Converting the fractions:

-7 целых семь восьмих = -7 * 16/16 + 7/8 = -112/16 + 7/8 = -112/16 + 14/16 = -98/16

-7 целых одна шестнадцатая = -7 * 16/16 + 1/16 = -112/16 + 1/16 = -111/16

Now, we can add the fractions: -98/16 + (-111/16) = (-98 - 111)/16 = -209/16.

Therefore, -7 целых семь восьмих + (-7 целых одна шестнадцатая) = -209/16.

№2: Вычисление значения выражений We are given the following expressions:

1. A * X, where A = -44.25 and X = 29.5 - пять шестых To calculate A * X, we substitute the given values and perform the multiplication:

A * X = (-44.25) * (29.5 - 5/6) = (-44.25) * (29.5 - 0.8333) = (-44.25) * (28.6667) = -1271.2083

Therefore, A * X, when A = -44.25 and X = 29.5 - пять шестых, is approximately -1271.2083.

2. A, where A = -15.3 The value of A is already given as -15.3.

Therefore, when A = -15.3, the value of A is -15.3.

№3: Угадывание корня уравнения We need to guess the root of the equation У (-0.5) = 1.

Since the equation is given in Russian, it seems that "У" represents an unknown variable. To solve for У, we need to isolate it on one side of the equation.

У (-0.5) = 1 Dividing both sides by -0.5:

У = 1 / (-0.5) У = -2

Therefore, the root of the equation У (-0.5) = 1 is У = -2.

№4: Сложение чисел To add the given numbers, let's solve each addition step by step:

1. 25.16 + (-0.6) Adding the numbers: 25.16 + (-0.6) = 24.56

Therefore, 25.16 + (-0.6) = 24.56.

2. -3 целых одна седьмая + 19 We can convert -3 целых одна седьмая to a fraction with a common denominator of 7:

-3 целых одна седьмая = -3 * 7/7 + 1/7 = -21/7 + 1/7 = -20/7

Adding the numbers: -20/7 + 19 = (19 * 7 + (-20))/7 = (133 - 20)/7 = 113/7 = 16 + 1/7

Therefore, -3 целых одна седьмая + 19 = 16 + 1/7.

№5: Вычисление значения выражения We are given the expression: -160 + (-одна вторая + 2.5)

To calculate the value of this expression, we first need to simplify the expression inside the parentheses:

-одна вторая + 2.5 = -1/2 + 2.5 = 2.5 - 1/2 = 2.5 - 0.5 = 2.

Now, we can substitute this simplified expression into the original expression and perform the addition:

-160 + (-одна вторая + 2.5) = -160 + 2 = -158.

Therefore, the value of the expression -160 + (-одна вторая + 2.5) is -158.

№6: Выполнение вычитания Let's solve each subtraction step by step:

1. -2 целых три десятых - 1.1 Subtracting the numbers: -2.3 - 1.1 = -3.4

Therefore, -2 целых три десятых - 1.1 = -3.4.

2. 10 - 2.25 Subtracting the numbers: 10 - 2.25 = 7.75

Therefore, 10 - 2.25 = 7.75.

3. 0 - 130.8 Subtracting the numbers: 0 - 130.8 = -130.8

Therefore, 0 - 130.8 = -130.8.

4. -15 - (-5 целых одна восьмая) We can convert -5 целых одна восьмая to a fraction with a common denominator of 8:

-5 целых одна восьмая = -5 * 8/8 + 1/8 = -40/8 + 1/8 = -39/8

Subtracting the numbers: -15 - (-39/8) = -15 + 39/8 = (-120 + 39)/8 = -81/8

Therefore, -15 - (-5 целых одна восьмая) = -81/8.

№7: Решение уравнения To solve the equation 10 - У = -12 целых семь восьмых, we need to isolate У on one side of the equation.

10 - У = -12 целых семь восьмых Adding У to both sides:

10 - У + У = -12 целых семь восьмых + У 10 = -12 целых семь восьмых + У 10 = (-12 * 8 + 7) / 8 + У 10 = (-96 + 7) / 8 + У 10 = -89/8 + У

Now, we can subtract -89/8 from both sides:

10 - (-89/8) = -89/8 + У - (-89/8) 10 + 89/8 = -89/8 + У + 89/8 (80 + 89)/8 = У 169/8 = У

Therefore, the solution to the equation 10 - У = -12 целых семь восьмых is У = 169/8.