Mathematics, 18.05.2021 09:30 ashleyd9243

Check if x=-1 is a solution to x3 + 3x^2 = x+3. Which statement do you get? A. 1=1
B. 0=0
C. 4= 4
D. 2 = 2

Answers: 2

Show answers

Answers

Answer from: j015

D. 2 = 2

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Step-by-step explanation:

Step 1: Define

x³ + 3x² = x + 3

x = -1

Step 2: Check

Substitute in x: (-1)³ + 3(-1)² = -1 + 3Evaluate exponents: -1 + 3(1) = -1 + 3Multiply: -1 + 3 = -1 + 3Add: 2 = 2

Answer from: Quest

2^y = ln 5, or y(ln 2) = ln 5. solving for y, y = (ln 5) / (ln 2). y=5

step-by-step explanation:

Answer from: Quest

{x = -1/2 , y = -1

step-by-step explanation:

solve the following system:

{2 x + y = -2

{10 x - 3 y = -2

in the first equation, look to solve for y:

{2 x + y = -2

{10 x - 3 y = -2

subtract 2 x from both sides:

{y = -2 x - 2

{10 x - 3 y = -2

substitute y = -2 x - 2 into the second equation:

{y = -2 x - 2

{10 x - 3 (-2 x - 2) = -2

10 x - 3 (-2 x - 2) = (6 x + 6) + 10 x = 16 x + 6:

{y = -2 x - 2

{16 x + 6 = -2

in the second equation, look to solve for x:

{y = -2 x - 2

{16 x + 6 = -2

subtract 6 from both sides:

{y = -2 x - 2

{16 x = -8

divide both sides by 16:

{y = -2 x - 2

{x = -1/2

substitute x = -1/2 into the first equation:

{y = -1

{x = -1/2

collect results in alphabetical order:

answer: {x = -1/2 , y = -1

Another question on Mathematics

Mathematics, 20.06.2019 18:02

Estimate each quotient. show the compatible numbers you use. 0.00438 ÷ 0.00072

Answers: 1

Answer

Mathematics, 21.06.2019 13:40

The pressure exerted on the walls of a container by a gas enclosed within it is directly proportional to the temperature of the gas. if the pressure is 6 pounds per square inch when the temperature is find the pressure exerted when the temperature of the gas is 380 degrees f show work for the

Answers: 2

Answer

Mathematics, 21.06.2019 15:30

Write the expression in simplified radical form. show all steps and work including any foil method work. (hint: use the conjugate. no decimal answers.) (9-2√3)/(12+√3)

Answers: 1

Answer

Mathematics, 21.06.2019 21:00

Acomputer store buys a computer system at a cost of $370.80. the selling price was first at $ 618, but then the store advertised a 20 % markdown on the system. answer parts a and b. a. find the current sale price.

Answers: 1

Answer

You know the right answer?

Check if x=-1 is a solution to x3 + 3x^2 = x+3. Which statement do you get? A. 1=1
B. 0=0

Questions