Mathematics : asked on brie7396

22.05.2022

Solve for x: -3x +10 = 31

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24.06.2023, solved by verified expert

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x = -7

Explanation:
-3x * -7 = 21
21 + 10 = 31

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Mathematics

Solve for x: -3x +10 = 31

Step-by-step answer

P Answered by PhD

1

x = -7

Explanation:
-3x * -7 = 21
21 + 10 = 31

Mathematics

4/5x = -16 solve for x. -3x + 4 = 31 solve for x. 2x + -12 = -22 what is the solution? 25 = 15 – 5r what is the solution to the equation? 12.5 + 5x = -10

Step-by-step answer

P Answered by PhD

Hello!

The answers are:

1 x=-20

2 x=-9

3 x=-5

4 r=-2

5 x=-4.5

Why?

To know the solution of the problems, we need to isolate each variable.

Remember that:

- If we have an equality: if the number is subtracting (negative sign), and if you need to move it to the other side of the equality, its sign changes to positive.

- If we have an equality: if the number is adding (positive sign), and if you need to move it to the other side of the equality, its sign changes to negative.

- If we have an equality: if the number is part of a product , and if you need to move it to the other side of the equality, the same number will be dividing the factors of the side. On the opposite, if the number is dividing, it will be multiplying on the other side of the equality.

So,

1 - Solving for "x"

$\frac{4}{5}x=-16\\x=\frac{-16}{\frac{4}{5} }=-16*\frac{5}{4}=-20\\x=-20$

2 - Solving for "x"

$-3x+4=31\\-3x=31-4=27\\x=\frac{27}{-3}=-9$

3 - Solving for "x"

$2x+(-12)=-22\\2x-12=-22\\2x=-22+12=-10\\\\2x=-10\\x=\frac{-10}{2}=-5$

4 - Finding the solution

$25=15-5r\\25-15=-5r\\-5r=10\\r=\frac{10}{-5}=-2$

5 - Finding the solution

$12.5+5x=-10\\5x=-10-12.5=-22.5\\5x=-22.5\\x=\frac{-22.5}{5}=-4.5$

Have a nice day!

Mathematics

4/5x = -16 solve for x. -3x + 4 = 31 solve for x. 2x + -12 = -22 what is the solution? 25 = 15 – 5r what is the solution to the equation? 12.5 + 5x = -10

Step-by-step answer

P Answered by PhD

Hello!

The answers are:

1 x=-20

2 x=-9

3 x=-5

4 r=-2

5 x=-4.5

Why?

To know the solution of the problems, we need to isolate each variable.

Remember that:

- If we have an equality: if the number is subtracting (negative sign), and if you need to move it to the other side of the equality, its sign changes to positive.

- If we have an equality: if the number is adding (positive sign), and if you need to move it to the other side of the equality, its sign changes to negative.

- If we have an equality: if the number is part of a product , and if you need to move it to the other side of the equality, the same number will be dividing the factors of the side. On the opposite, if the number is dividing, it will be multiplying on the other side of the equality.

So,

1 - Solving for "x"

$\frac{4}{5}x=-16\\x=\frac{-16}{\frac{4}{5} }=-16*\frac{5}{4}=-20\\x=-20$

2 - Solving for "x"

$-3x+4=31\\-3x=31-4=27\\x=\frac{27}{-3}=-9$

3 - Solving for "x"

$2x+(-12)=-22\\2x-12=-22\\2x=-22+12=-10\\\\2x=-10\\x=\frac{-10}{2}=-5$

4 - Finding the solution

$25=15-5r\\25-15=-5r\\-5r=10\\r=\frac{10}{-5}=-2$

5 - Finding the solution

$12.5+5x=-10\\5x=-10-12.5=-22.5\\5x=-22.5\\x=\frac{-22.5}{5}=-4.5$

Have a nice day!

Mathematics

Pl help Question 1 (1 point) Saved What is the solution to the following equation? 4x + 15 = 31 Question 1 options: x = 11.5 x = 4 x = 12 x = -7.25 Question 2 (1 point) Saved What is the solution set for the inequality? -3x + 10 -5 Question 2 options: x -5 x -5 x 5 x 5 Question 3 (1 point) What is the solution to the model below? Question 3 options: x = 7 x = 2 x = 3 x = 1 Question 4 (1 point) Solve the inequality. -2x - 1 ≥ 9 Question 4 options: x ≤ 5 x ≥ -5 x ≤ -5 x ≥ 5 Question 5 (1 point) Solve for x. -0.5x + 3.55 = -4.5 Question 5 options:

Step-by-step answer

P Answered by Specialist

4

1) x=4

2) x<5

3) x=3

4) x ≤ -5

5) x=16.1

Step-by-step explanation:

Mathematics

Solve for x. 1. -3x + 4 = 31 solve for x. 2. 2x + -10 = 22 what is the solution? 3. 40 = 32 – 4r

Step-by-step answer

P Answered by PhD

1

1)-9

2)16

3)-2

Step-by-step explanation:

1)

-3x + 4 = 31

-3x = 31 - 4

-3x = 27

-x = 27/3

-x = 9

x = -9

2)

2x + -10 = 22

2x = 22 + 10

2x = 32

x = 32/2

x = 16

3)

40 = 32 – 4r

-4r = 40 - 32

-4r = 8

-r = 8/4

-r = 2

r = -2

Mathematics

Which expression is equivalent to (5x2 + 2x + 1) + (6x2 − 3x + 9) -a. -3x2 + 11x − 3 b. 11x2 − x + 10 c. 4x2 + 27x − 28 d. -3x2 + 11x + 31

Step-by-step answer

P Answered by PhD

2

B. 11x^2 − x + 10

Step-by-step explanation:

(5x^2 + 2x + 1) + (6x^2 − 3x + 9)

I like to line them up vertically

(5x^2 + 2x + 1)

+ (6x^2 − 3x + 9)

11 x^2 - x + 10

Mathematics

Which expression is equivalent to (5x2 + 2x + 1) + (6x2 − 3x + 9) -a. -3x2 + 11x − 3 b. 11x2 − x + 10 c. 4x2 + 27x − 28 d. -3x2 + 11x + 31

Step-by-step answer

P Answered by PhD

2

B. 11x^2 − x + 10

Step-by-step explanation:

(5x^2 + 2x + 1) + (6x^2 − 3x + 9)

I like to line them up vertically

(5x^2 + 2x + 1)

+ (6x^2 − 3x + 9)

11 x^2 - x + 10

StudenGPT

-Sc Q 31 T Which system of inequalities is represented by the graph? Fock O Terms Use IOI O Q A T O Z y≥ 3x+6 y -x-6 y x y≤ 3x+6 y - x-6 y x O y≤ x+6 y -3x - 6 y x 12 y≥ ²x+6 y -3x - 6 y x 2 com W S # 3 x alt E D $ V C R % F L.P 5 T V G B & 7 H -10 -8 -6 -4 18 204 U 8 00 J N 19 -- -6 -8 -10 10 M 8 6 2 --4- 4 110 K insert 2 V O 4 6 alt a 8 V .. 10 E

Step-by-step answer

P Answered by Studen AI

1

The system of inequalities represented by the graph is:

y ≥ 3x + 6 (represented by the line passing through the points (0, 6) and (-2, 0) with shaded region above the line)

y < -x - 6 (represented by the line passing through the points (0, -6) and (-6, 0) with shaded region below the line)

So, the correct answer is:

y ≥ 3x + 6 (Option D)

StudenGPT

-Sc Q 31 T Which system of inequalities is represented by the graph? Fock O Terms Use IOI O Q A T O Z y≥ 3x+6 y -x-6 y x y≤ 3x+6 y - x-6 y x O y≤ x+6 y -3x - 6 y x 12 y≥ ²x+6 y -3x - 6 y x 2 com W S # 3 x alt E D $ V C R % F L.P 5 T V G B & 7 H -10 -8 -6 -4 18 204 U 8 00 J N 19 -- -6 -8 -10 10 M 8 6 2 --4- 4 110 K insert 2 V O 4 6 alt a 8 V .. 10 E

Step-by-step answer

P Answered by Studen AI

The system of inequalities represented by the graph is:

y ≥ 3x + 6 (represented by the line passing through the points (0, 6) and (-2, 0) with shaded region above the line)

y < -x - 6 (represented by the line passing through the points (0, -6) and (-6, 0) with shaded region below the line)

So, the correct answer is:

y ≥ 3x + 6 (Option D)

Mathematics

Need answers as soon as possible, will give brainiest and rate 5/5. 1: solve x/-3 = -15. 45 -45 5 -5 2: find the value of -7 + 3(-12) ÷ (-3). -16 -19 -40 5 3: if f(n) = n^2 - n, then f(-4) is -20 20 12 -12 4: which equation does not have the same solution as the others? x/4 = 2 x - 9 = 17 x + 12 = 20 2x = 16 5: the solution to 2x - 5 = 27 is also a solution of which of the following equations? 3 + 5x = 58 3x - 2 = 31 2x + 3 = 35 27 - 2x = 5 6: find the value of -8 - 12 - (-20). 24 -40 16 0 7: evaluate -2x ^2y, if x = -3 and y = -1. -12 -18 18 12

Step-by-step answer

P Answered by Master

54

1. x/-3=-15
x=45

2. -7+3(-12)÷-3
-7+12
5

3. f(-4)=(-4)²-(-4)
f(-4)=16-(-4)
f(-4)=20

4. x-9=17

5. 2x+3=35

6. -8-12-(-20)
-20-(-20)
0

7. -2(-3)²(-1)
-2(9)(-1)
-18(-1)
18

8. x-(-2)

9. subtract 7 then divide by -2

10. 6+(-18)+(-13)+9
-12-4
-16

11. 5x=11

12. division property

13. -3³ = -27

14. x/2-3=7
x/2=10
x=20

15. 2x-5=15

16. x/-4-(-8)=12
x/-4=4
x=-16

17. 168

18. 16-20-(-8)-9
-4-(-8)-9
4-9
-5

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