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Mila [183]
3 years ago
11

A set of equations is given below:

Mathematics
2 answers:
ludmilkaskok [199]3 years ago
5 0
The correct answer is 5b + 1 = 3b + 5. In order to find the answer to a system of equations, the two equations must be set equal to each other. For instance, if we had the equations x = y + 1 and x = 3y - 1, we would set the two equations equal to one another to find the answer.

x = y + 1
x = 3y - 1
y + 1 = 3y - 1
1 = 2y - 1
2 = 2y
1 = y

x = y + 1
x = 1 + 1
x = 2

You can use the same procedure with this system of equations.

5b + 1 = 3b + 5
2b + 1 = 5
2b = 4
b = 2

a = 5b + 1
a = 5(2) + 1
a = 10 + 1
a = 11

Hope this helps!
Bess [88]3 years ago
3 0

Answer:

C. 5b+1=3b+5

Step-by-step explanation:

We have been given a set of equations as:

Equation A: a=5b+1

Equation B: a=3b+5

We can see that the given set of equations represent system of linear equation.

We will use substitution property of equality, which states when x=y, then x can be substituted in any equation in place of y and y can be substituted in place of x in any equation as well.

To solve our given system of equations we need to equate our given equations as:

5b+1=3b+5

Therefore, option C is the correct choice.

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1 year ago
The diameter of a circle measures 28 mm. What is the circumference of the circle?
Papessa [141]

Answer:

C = 87.92 mm

General Formulas and Concepts:

<u>Symbols</u>

  • π (pi) ≈ 3.14

<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>

Circumference Formula: C = πd

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Step-by-step explanation:

<u>Step 1: Define</u>

Diameter <em>d</em> = 28 mm

<u>Step 2: Solve</u>

  1. Substitute in variables [Circumference Formula]:                                          C = 3.14(28 mm)
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8 0
2 years ago
What is the speed of a car that takes 3 hours to go 75 miles
Rainbow [258]
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3 0
3 years ago
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The length is _____ the width is______ and the area of the actual room is ___ _______
RSB [31]

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98 square inches.

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The length is 14 inches. The width is 7 inches.

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8 0
3 years ago
Simplify this expression -6w + (-8) + 1+ (-7w)
Rzqust [24]

Answer:

\boxed{-6w+(-8)+1+(-7w)=-13w-7}

Step-by-step explanation:

The given expression is  -6w+(-8)+1+(-7w).


This expression is the same as;


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Or

 -6w-8+1-7w.


We regroup the terms to obtain;


-6w-7w-8+1


We simplify to get

-13w-7


3 0
3 years ago
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