3 years ago

Which equation is an identity? (Can someone explain to me how they got their answer, I don't get this.)

1 answer:

7 0

5w + 8 - w = 6w - 2(w -4).

Let's reduce the equation on the left:

4w + 8; (1)

and now let's reduce the equation on the right

6w - 2w +8 = 4w +8 (2).

We notice that (1) ≈ (2), and this is the only IDENTITY

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Y = -3x - 2 and 5x + 2y = 15

denis-greek [22]

Answer:

(-19, 55)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Algebra I

Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

y = -3x - 2

5x + 2y = 15

Step 2: Solve for x

Substitution

Substitute in y: 5x + 2(-3x - 2) = 15
Distribute 2: 5x - 6x - 4 = 15
Combine like terms: -x - 4 = 15
Isolate x term: -x = 19
Isolate x: x = -19

Step 3: Solve for y

Define original equation: y = -3x - 2
Substitute in x: y = -3(-19) - 2
Multiply: y = 57 - 2
Subtract: y = 55

8 0

3 years ago

Someone help me with this question please.

grandymaker [24]

It’s 27 because u multiple the first 2 number and it’s a negative then add the rest to it

5 0

4 years ago

the graph of a quadratic function is shown on the grid. which function is the best represented by this graph?

Sindrei [870]

Answer:

Step-by-step explanation:

It is H

4 0

3 years ago

What is five times three hundred

spayn [35]

The answer is 1500 I hope this help!

4 0

4 years ago

One desk requires 84 inches of a type of trim. Find the lenght of trim needed in inches of 5 desks. Then convert yours answer to

Crazy boy [7]

420 inches and 35 feet

length of trim required = 84 × 5 = 420 inches

using 12 inches = 1 foot then

$\frac{420}{12}$ = 35 feet

6 0

3 years ago