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svetoff [14.1K]
3 years ago
8

[need this done] (5/3) (2/3) (21) A. 1/20 B. 20/3 C. 3/70 D. 70/3

Mathematics
2 answers:
Ganezh [65]3 years ago
5 0

The answer is D.

If you multiply them all together the answer (without simplifying), it should equal 210/9, you then simplify the numerator and denominator by 3 and you get 70/3.

Troyanec [42]3 years ago
3 0

Answer:

D

Step-by-step explanation:

Given

\frac{5}{3} × \frac{2}{3} × \frac{21}{1}

Multiply numerators/ denominators

= \frac{5(2)(21)}{3(3)(1)}

= \frac{210}{9}

Cancel the numerator/denominator by dividing both by 3

= \frac{70}{3} → D

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How many questions can i ask brainly without position for community if i have 4000 points.
Masteriza [31]

Answer:

Depends on how much you offer for an answer. Offer 10 points and you'll be able to ask 400 questions. Offer 20 points, I think around 200 questions.

4 0
2 years ago
What is the solution to the pair of simultaneous equations? 2x+y=5. 3x-2y=4​
densk [106]

Answer:

(2, 1)

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  

Distributive Property

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality<u> </u>

<u>Algebra I</u>

  • Coordinates (x, y)
  • Terms/Coefficients
  • Solving systems of equations using substitution/elimination

Step-by-step explanation:

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

2x + y = 5

3x - 2y = 4

<u>Step 2: Rewrite Systems</u>

<em>Manipulate 1st equation</em>

  1. [Subtraction Property of Equality] Subtract 2x on both sides:                      y = 5 - 2x

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

<em>Substitution</em>

  1. Substitute in <em>y</em> [2nd Equation]:                                                                         3x - 2(5 - 2x) = 4
  2. [Distributive Property] Distribute -2:                                                                3x - 10 + 4x = 4
  3. [Addition] Combine like terms:                                                                        7x - 10 = 4
  4. [Addition Property of Equality] Add 10 on both sides:                                   7x = 14
  5. [Division Property of Equality] Divide 7 on both sides:                                 x = 2

<u>Step 4: Solve for </u><em><u>y</u></em>

  1. Substitute in <em>x</em> [Modified 1st Equation]:                                                           y = 5 - 2(2)
  2. Multiply:                                                                                                             y = 5 - 4
  3. Subtract:                                                                                                            y = 1
3 0
3 years ago
Solve x3 = 160.<br> help
Bad White [126]

Answer: 5.43

Step-by-step explanation:

Given :

x^{3} = 160

To find x , we will find the cube root of both sides , that is

x = \sqrt[3]{160}

x = 5.428835233

x ≈ 5.43

5 0
3 years ago
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kifflom [539]
125x = 25
x = 0,2
There you go :)
8 0
3 years ago
Geometry question 4, Thanks if you answer or help!
Ber [7]
I think it is A)53 because the are the same size
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