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3 years ago

Given that 4x-5y = 21 Find x when y = -4. Give your answer as a fraction in its simplest form.

Mathematics

2 answers:

alexira [117]3 years ago

6 0

Answer:

x = 1/4

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtraction Property of Equality

Step-by-step explanation:

Step 1: Define

Identify

4x - 5y = 21

y = -4

Step 2: Solve for x

Substitute in y: 4x - 5(-4) = 21
Multiply: 4x + 20 = 21
[Subtraction Property of Equality] Subtract 20 on both sides: 4x = 1
[Division Property of Equality] Divide 4 on both sides: x = 1/4

blsea [12.9K]3 years ago

4 0

Answer:

1/4 (One over Four)

Step-by-step explanation:

Step 1. Multiply -5 with -4 (Negitive x Negitive is always Positive!).

Step 2. Subtract 20 (From step 1) from 21.

Step 3. divide 4x by 1.

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Write a function g whose graph represents the indicated transformation of the graph of f(x)=x+2; translation 2 units right

miss Akunina [59]

The function g whose graph represents the indicated transformation of the graph of f(x)=x+2; translation 2 units right is g(x) = x

<h3>Translation of functions</h3>

Translation is a technique used to change the position of an image on an xy-plane. Given the function below;

f(x) = x +2

If the expression is translation 2 units to the right, the translation rule will be:

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Hence the function g whose graph represents the indicated transformation of the graph of f(x)=x+2; translation 2 units right is g(x) = x

Learn more on translation here: brainly.com/question/12861087
#SPJ1

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