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kondor19780726 [428]
3 years ago
6

A large pizza has diameter 36 cm and a medium pizza has diameter 30 cm. What is the difference in area of the pizzas? Round your

answer to the nearest square centimeter.
Mathematics
1 answer:
Alik [6]3 years ago
8 0

Answer: 10cm squared

Step-by-step explanation:

pix15 squared =47.12(2dp)

pix18 squared =56.75 (2dp)

difference =56.75-47.12=9.63

=10cm to nearest square centimetre

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Solve and check the linear equation.<br> 3(x-2) + 8 = 2(x + 5)
ANEK [815]

Answer:

x = 8

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  

Equality Properties

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

<u>Algebra I</u>

  • Terms/Coefficients

Step-by-step explanation:

<u>Step 1: Define</u>

3(x - 2) + 8 = 2(x + 5)

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. (Parenthesis) Distribute:                                                                               3x - 6 + 8 = 2x + 10
  2. Combine like terms:                                                                                     3x + 2 = 2x + 10
  3. {Subtraction Property of Equality] Subtract 2x on both sides:                    x + 2 = 10
  4. [Subtraction Property of Equality] Subtract 2 on both sides:                      x = 8

<u>Step 3: Check</u>

<em>Plug in x into the original equation to verify it's a solution.</em>

  1. Substitute in <em>x</em>:                                                                                               3(8 - 2) + 8 = 2(8 + 5)
  2. (Parenthesis) Subtract/Add:                                                                         3(6) + 8 = 2(13)
  3. Multiply:                                                                                                         18 + 8 = 26
  4. Add:                                                                                                               26 = 26

Here we see that 26 does indeed equal 26.

∴ x = 8 is the solution to the equation.

3 0
3 years ago
If log a=3 log b-2 log c, find an expression for a that does not involve logarithms​
photoshop1234 [79]

Assuming that b>0 and c>0:

log(a)=3×log(b)-2×log(c)=

log(b³)-log(c²)=

log(b³/c²)

Hence a=b³/c²

7 0
3 years ago
Who can help me ? please​
Masja [62]

Answer:

\dfrac{7}{9}

Step-by-step explanation:

\dfrac{2}{3}=\dfrac{2\cdot 3}{3\cdot 3}=\dfrac{6}{9} \\\\\\\dfrac{6}{9}+\dfrac{1}{9}=\dfrac{7}{9}

Hope this helps!

4 0
3 years ago
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A boy band has released two albums. Their first album sold 5.9×10^5 copies. Their second album sold 1.3×10^6 copies. How many to
prisoha [69]
The band has sold 1,890,000 copies or 1.89 x 10^6
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13. Which fraction is halfway between 3/5 and<br>5/7?​
Hitman42 [59]
18/35 is halfway between 3/5 and 5/7. Do you want me to explain or just the answer?
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