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Ghella [55]
3 years ago
9

solve this math problem. Estimate it by giving whole number. Show working also. (ESTIMATE, NOT WORK OUT) :)​

Mathematics
1 answer:
pentagon [3]3 years ago
5 0

Answer:

(a) 11.

(b) 5.

Step-by-step explanation:

(a)√124:

11*11 = 121 so an estimate is 11.

(b) ∛124

5*5*5 = 125

So an estimate is 5.

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Mama L [17]

Answer:

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2 years ago
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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:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

<u>Geometry</u>

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:

<u>Step 1: Define</u>

Diameter <em>d</em> = 18 units

<u>Step 2: Manipulate Variables</u>

Radius <em>r</em> = 18 units/2 = 9 units

<u>Step 3: Find Area</u>

  1. Substitute in <em>r</em> [Area of a Circle Formula]:                                                       A = π(9 units)²
  2. [Area] Evaluate exponents:                                                                              A = π(81 units²)
  3. [Area] Multiply:                                                                                                  A = 81π units²
6 0
3 years ago
Jordan volunteered for the same amount of time each day for 7 days. If he volunteered for 329 minutes altogether, how many minut
AVprozaik [17]

Answer:

47

Step-by-step explanation:

Just divide 329 by 7

That gives you 47

3 0
3 years ago
HELP PLEASE Rory has 10 Gallons 8 cups of water to fill her aquarium how many cups of water does she have? Hint: 1 gallon = 16 c
Lesechka [4]

Answer:

Rory has 168 cups of water

Step-by-step explanation:

Since 1 Gallon is equals to 1 cups, multiply it by 10 gallons then add 8 cups to it

<u><em>Hope this helps</em></u>

4 0
3 years ago
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Anna bought p packages of paper plates at Party City that cost $4 per package and c packages of cups that cost $3 per package. S
sergeinik [125]

Answer:

$46

Step-by-step explanation:

Cost: 4p + 3c + 16

if p=3 and c=6 then,

4(3) + 3(6) +16

12+18+16

46 dollars spent

4 0
3 years ago
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