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3 years ago

What is the radius of a circle that has a diameter of 38

Mathematics

2 answers:

kotegsom [21]3 years ago

8 0

Answer: 19

Step-by-step explanation: 19 would be the radius for the circle because the diameter is 2 times the radius. In this case, if you multiply 19 by 2 you get a product of 38. So 19 would be the answer. Hope It Helped

Vinvika [58]3 years ago

7 0

Answer:

The radius of the circle is 19

Step-by-step explanation:

To find the radius of a circle you divide the diameter by 2. (to find the diameter of a circle you multiply the radius by 2)

38 divided by 2 = 19

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KATRIN_1 [288]

Answer:

$\displaystyle k = 6$

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

Algebra I

Functions
Function Notation

Algebra II

Piecewise Functions

Calculus

Limits
Continuity

Step-by-step explanation:

Step 1: Define

Identify

Continuous at x = 2

$\displaystyle f(x) = \left \{ {{2x^2 \ if \ x < 2} \atop {x + k \ if \ x \geq 2}} \right.$

Step 2: Solve for k

Definition of Continuity: $\displaystyle \lim_{x \to 2^+} 2x^2 = \lim_{x \to 2^-} x + k$
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Evaluate exponents: $\displaystyle 2(4) = 2 + k$
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[Subtraction Property of Equality] Subtract 2 on both sides: $\displaystyle 6 = k$
Rewrite: $\displaystyle k = 6$

Topic: AP Calculus AB/BC (Calculus I/II)

Unit: Limits - Continuity

Book: College Calculus 10e

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