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aksik [14]
3 years ago
5

Will someone help me with this one I'll give 18 points for help

Mathematics
1 answer:
slamgirl [31]3 years ago
3 0
Back yard- 24.5 x 18= 442
Front yard- 18.5 x 14.5 = 268.25
Other " - 12.5 x 14.5 = 181.25
Total = 890.5 sq ft
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3x+5(2+x)=4x-7 help me out here?
Oksi-84 [34.3K]

Answer:

x = -17/4

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

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>

  • Terms/Coefficients

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

3x + 5(2 + x) = 4x - 7

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

  1. [Distributive Property] Distribute 5:                                                                 3x + 10 + 5x = 4x - 7
  2. [Addition] Combine like terms:                                                                        8x + 10 = 4x - 7
  3. [Subtraction Property of Equality] Subtract 4x on both sides:                      4x + 10 = -7
  4. [Subtraction Property of Equality] Subtract 10 on both sides:                       4x = -17
  5. [Division Property of Equality] Divide 4 on both sides:                                  x = -17/4
6 0
3 years ago
Read 2 more answers
Use the distributive property to write an expression equivalent to 15(5+n)
Ratling [72]
The answer is i beleve 75+15n
8 0
3 years ago
Find all solutions to the equation in the interval [0, 2π). cos 2x - cos x = 0
Jlenok [28]
This is the concept of algebra, to solve the expression we proceed as follows;
cos 2x-cosx=0
cos 2x=cosx
but:
cos 2x+1=2(cos^2x)
thereore;
from:
cos 2x=cos x
adding 1 on both sides we get:
cos 2x+1=cos x+1
2(cos^2x)=cosx+1
suppose;
cos x=a
thus;
2a^2=a+1
a^2-1/2a-1/2=0
solving the above quadratic we get:
a=-0.5 and a=1
when a=-0.5
cosx=-0.5
x=120=2/3π
when x=1
cos x=1
x=0
the answer is:
x=0 or x=2/3π

4 0
3 years ago
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The value of loga (30a)^3 is
postnew [5]
Part 1 of the solution.

8 0
3 years ago
Twenty-six is what percent of 40?
Marina CMI [18]
I believe it is 65 percent
6 0
2 years ago
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