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Mashutka [201]
4 years ago
7

The perimmerter of a triangle is 27 inches. only 2 sides are known 12.3 and 5.4. What is the third side and what is the equation

Mathematics
1 answer:
mario62 [17]4 years ago
8 0

Answer:

9.3 in

Step-by-step explanation:

Perimeter = add up the sides

12.3 + 5.4 + x = 27

17.7 + x = 27

x = 27-17.7

x = 9.3

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In the diagram below, P is circumscribed about quadrilateral ABCD. what is the value of x?
dimulka [17.4K]

Answer:

A. 100

Step-by-step explanation:

Just took this quiz. Good luck!

4 0
3 years ago
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the length of a rectangular garden is one foot les than five times it's width. the area is 18 square feet find de width and leng
Harlamova29_29 [7]
The width is 2 and the length is 9 because 9 times 2 is 18 and 2 times 5 is 10. 10 minus 1 is 9 which then again 9 times 2 is 18 which is the area.
7 0
3 years ago
Which is an equation of the line through (-1, -4) and parallel to 3x+y=5
kherson [118]

Answer:

<h2>         b)  y = -3x - 7</h2>

Step-by-step explanation:

3x + y = 5         {subtract 3x from both sides}

y = -3x + 5         ←  slope-intercept form

y=m₁x+b₁   ║   y=m₂x+b₂   ⇔    m₁ = m₂

{Two lines are parallel if  their slopes are equal}

y = -3x + 5    ⇒   m₁ = -3    ⇒    m₂ = -3

(-1, -4)  ⇒  x₁ = -1,  y₁ = -4

The point-slope form:

y - (-4) = -3(x - (-1))

y + 4 = -3(x + 1)

y + 4 = -3x - 3              {subtact 4 from both sides}

<h3><u>y = -3x - 7 </u><u>        ←    slope-intercept form</u></h3>
7 0
3 years ago
Select all of the following that are quadratic equations. 7x2 + 14x = 0 x3 - 3x2 + 1 = 0 5x - 7 = 0 x2 + 3x -5 = 0 x - 5 = 9x +
Tpy6a [65]

Answer:

7x2 + 14x = 0

x2 + 3x -5 = 0

x2 - x = 3x + 7  

Step-by-step explanation:

A quadratic equation has the highest power of x to the second power.  It must have x to the second power

7x2 + 14x = 0  quadratic

x3 - 3x2 + 1 = 0   not quadratic  but cubic

5x - 7 = 0  not quadratic  but linear

x2 + 3x -5 = 0   quadratic

x - 5 = 9x + 7  not quadratic but linear

x2 - x = 3x + 7  quadratic

4 0
3 years ago
suppose that x varies directly with y and x=17 when y=-85. What is the constant variation and what is the value of x when y=-160
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Answer: Hope someone gonna answer soon....


Step-by-step explanation:


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