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3 years ago

Please help it’s due today at 6:10am please help me please please need help please

Mathematics

2 answers:

zepelin [54]3 years ago

8 0

Answer:

Step-by-step explanation:

a. 3-4x=-7-4x

3=-7. no solution

b. 15 - 2x = -7x

15 = -5x

x=-3. one solution

c. 7y-21=6y-21

y=0

1. -3x+4=-3x+7

4=7

2. 10+2x = 5x+2

8=3x

x=3/8

3. x+5=x+5

rosijanka [135]3 years ago

3 0

Answer:

Step-by-step explanation:

a) 3 - 4x = -7 - 4x

- 4x in both terms can be cancelled

3 = -7 ⇒ equation with no solution

b) 15 - 2x = -7x

15 = -5x

-3 = x

x = -3

c) 7 (y - 3) = 6y - 21

7y - 21 = 6y - 21

7y - 6y = -21 + 21

y = 0

1) Equation with no solution:

3x + 5 = 12 + 3x

there is no x that conforms that equation because the result is always 5 = 12, which is inconsistent

2) Equation with one solution

2y -5 = 7 ⇒ y = 12/2 ⇒ y = 6

3) Equation with infinite solutions

x - 10 = x - 3 - 7

Any value of x complies with this equation

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12. Si R(x)=-5x2+x-2 y S(x)=-x - 3x, se ¿cuál es el resultado de R(x) + S(x) ?

lesya692 [45]

Answer:

El resultado eres: $R(x) + S(x) = -6x^2 - 2x - 2$

Step-by-step explanation:

Se dan las siguientes funciones

$R(x) = -5x^2 + x - 2$

$S(x) = -x^2 - 3x$

Cuál es el resultado de R(x) + S(x) ?

Se soman los fatores en comun. Entonces:

$R(x) + S(x) = -5x^2 + x - 2 + (-x^2 - 3x) = -5x^2 + x - 2 - x^2 - 3x = -5x^2 - x^2 + x - 3x - 2 = -6x^2 - 2x - 2$

El resultado eres: $R(x) + S(x) = -6x^2 - 2x - 2$

4 0

3 years ago

HELP PLSS Solve the equation 17−(3x+5)=3x−6

riadik2000 [5.3K]

Answer:

x = 3

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Step-by-step explanation:

Step 1: Define Equation

17 - (3x + 5) = 3x - 6

Step 2: Solve for x

Distribute negative: 17 - 3x - 5 = 3x - 6
Add 3x on both sides: 17 - 5 = 6x - 6
Combine like terms: 12 = 6x - 6
Isolate x term: 18 = 6x
Isolate x: 3 = x
Rewrite: x = 3

Step 3: Check

Plug in x into the original equation to verify it's a solution.

Substitute in x: 17 - (3(3) + 5) = 3(3) - 6
Multiply: 17 - (9 + 5) = 9 - 6
Add: 17 - 14 = 9 - 6
Subtract: 3 = 3

Here we see that 3 does indeed equal 3.

∴ x = 3 is the solution to the equation.

8 0

3 years ago

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Rectangle ABCD is graphed in the coordinate plane. The following are the vertices of the rectangle: A(-4, -2), B(-2, -2), C(-2,

vladimir2022 [97]

Answer:

The area of rectangle ABCD is $18\ units^2$

Step-by-step explanation:

Plot the figure to better understand the problem

we have the vertices

A(-4, -2), B(-2, -2), C(-2, 7), D(-4, 7)

see the attached figure

The area of the rectangle is equal to

$A=LW$

where

L is the length

W is the width

In this problem we have

$L=BC=7-(-2)=9\ units$ ---> difference of the y-coordinates

$W=AB=-2-(-4)=2\ units$ ---> difference of the x-coordinates

substitute

$A=(9)(2)=18\ units^2$

3 0

4 years ago

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AlekseyPX

Answer:

1a. Yes

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Step-by-step explanation:

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3 years ago

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skelet666 [1.2K]

Answer:

Step-by-step explanation

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3 years ago