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3 years ago

Could someone please explain and answer these? Thank you!

Mathematics

2 answers:

MissTica3 years ago

7 0

So first thing more u need to add all the numbers and look at it and think. I pretty sure I'm right

Trava [24]3 years ago

6 0

Answer: C. 782,000(1.05)10

And

C.210

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Kevin bought 3 dvds for 45.99 how much would 7 dvds cost?

Alecsey [184]

Answer:

I am pretty sure the answer would be $107.31. Sorry if I'm wrong.

Step-by-step explanation:

First you take the total of the 3 DVD's (45.99) and you divide that by 3 (number of DVD's) to get 15.33 which is called the unit price. Then, you take your unit price and multiply that by how many items you are going to buy.

45.99 / 3 = 15.33

15.33 x 7 = 107.31

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3 years ago

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3 years ago

Solve for -2<-3-3x<0

gregori [183]

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3 years ago

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Vedmedyk [2.9K]

Answer:

the second one brotha

Step-by-step explanation:

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3 years ago

What's the area of a circle with diameter 18 units? Question 8 options: A) 9π units2 B) 81π units2 C) π units2 D) 18π units2

Anna [14]

Answer:

B) 81π units²

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Geometry

Radius of a Circle Formula: r = d/2

r is radius
d is diameter

Area of a Circle Formula: A = πr²

Step-by-step explanation:

Step 1: Define

Diameter d = 18 units

Step 2: Manipulate Variables

Radius r = 18 units/2 = 9 units

Step 3: Find Area

Substitute in r [Area of a Circle Formula]: A = π(9 units)²
[Area] Evaluate exponents: A = π(81 units²)
[Area] Multiply: A = 81π units²

6 0

2 years ago