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1 year ago

1. The cost of a notebook is twice the cost of a pen. Write a linear equation in two variables to represent this statement.

Mathematics

1 answer:

nexus9112 [7]1 year ago

4 0

Answer:

x = 2y

Taking the cost of a notebook to be ₹ x and that of a pen to be ₹ y

hope that helps...

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Solve the quadratic equation below for the exact values of x. 4x² - 5 = 75

vfiekz [6]

Answer:

x = ±2√5

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
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Left to Right

Equality Properties

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

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Step-by-step explanation:

Step 1: Define

Identify

4x² - 5 = 75

Step 2: Solve for x

[Addition Property of Equality] Add 5 on both sides: 4x² = 80
[Division Property of Equality] Divide 4 on both sides: x² = 20
[Equality Property] Square root both sides: x = ±2√5

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dsp73

Using SSS the given angles are 83, 56, and 41
41.41 is angle Q
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List all the multiples of 4 up to 20

emmainna [20.7K]

4 , 8 , 12 , 16 , 20

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2 years ago

Find the values of x and y X= Y=

Cerrena [4.2K]

Answer:

x = 7

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Step-by-step explanation:

y + 12 = 3x - 5

5y - 4 = 3x - 5

So y + 12 = 5y - x

To solve the equation above, y =4

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Answer:

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