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pychu [463]
3 years ago
7

18)

Mathematics
1 answer:
kondor19780726 [428]3 years ago
7 0
If the circumference of a circle is changed from 9 cm to 3 cm, then the diameter decreases by a factor of 3.
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What is 1/6 plus 3/8 all together
zloy xaker [14]
\frac{1}{6} + \frac{3}{8} = \frac{1\times 4}{6\times 4} + \frac{3\times 3}{8\times 3} = \frac{4}{24} + \frac{9}{24} = \frac{9+4}{24} = \boxed{\frac{13}{24}}}
7 0
3 years ago
What is the first step to writing an equation of a line when given two points?
Alisiya [41]
Find the slope of the line using the two points by plugging them into this formula: m = y2 - y1 / x2 - x1 where the two points are x1, y1 and x2, y2 and m is the slope. 
3 0
3 years ago
Please help me its about solving system by substitution
Andrew [12]

Answer:

(-3, 4)

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
  • Subtract Property of Equality

<u>Algebra I</u>

  • Terms/Coefficients
  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

<u>Step 1: Define Systems</u>

y = -x + 1

2x + 3y = 6

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

<em>Substitution</em>

  1. Substitute in <em>y</em>:                    2x + 3(-x + 1) = 6
  2. Distribute 3:                         2x - 3x + 3 = 6
  3. Combine like terms:           -x + 3 = 6
  4. Isolate <em>x</em> terms:                   -x = 3
  5. Isolate <em>x</em>:                              x = -3

<u>Step 3: Solve for </u><em><u>y</u></em>

  1. Define equation:                     y = -x + 1
  2. Substitute in <em>x</em>:                        y = -(-3) + 1
  3. Simplify:                                   y = 3 + 1
  4. Add:                                         y = 4
6 0
3 years ago
Think of the letter X as four vectors starting from the center and pointing outward. Label the four vectors starting from the to
laila [671]

Answer:

a) in

b) in

Step-by-step explanation:

The detailed explanation is attached below

5 0
3 years ago
A cylinder has a base area of 44.6 mm2 and a height of 24 mm.
Free_Kalibri [48]
Volume of cylinder = base area  x height
                            = 44.6 x 24
                            = 1070.4 mm³
7 0
3 years ago
Read 2 more answers
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