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matrenka [14]
3 years ago
13

one side of a triangle is one-third the longest side. the third side is 11 ft less than the longest side. the perimeter is 73. f

ind all 3 sides
Mathematics
1 answer:
Len [333]3 years ago
7 0

side 1 = x

side 2 = x-11

side 3 = 1/3x


x + x-11 + 1/3x = 73

2x-11 + 1/3x = 73

2x = 6/3x

6/3x+1/3x = 7/3x


7/3x-11 = 73

7/3x = 84

7x =84*3

7x = 252

x = 252/7

x = 36

longest side = 36

2nd side = 1/3(36) = 12

3rd side = 36-11 = 25



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Need help please and thank you
Inessa [10]
A is correct.
If the two shorter sides squared and added together, equals the longer side squared, then it is a right triangle.
5 0
3 years ago
Can some help me with this question
Luden [163]

To find the equation of this line in slope-intercept form (y = mx + b, where m is its slope and b is its y-intercept), we naturally need the slope and the y-intercept. We can see that the line intersects the y-axis at the point (0, 4) so our y-intercept is 4, and the line rises 4 along the y-axis for every 2 it runs along the x-axis, so its slope is 4/2 = 2. With this in mind, we can write the line's equation as

y = 2x + 4

7 0
3 years ago
Which table represents a linear function that has a slope of 5 and a y-intercept of 20?
erastovalidia [21]

Answer:

The first image.

x |  y

-4 | 0

0 | 20  <--- When x = 0, the y value is the y-intercept.

4 | 40

8 | 60

Step-by-step explanation:

To check the slope, we can use the equation (y₂ - y₁) ÷ (x₂ - x₁) using any two pairs given. For this example, I'll use (-4, 0) and (4, 40).

                                                              x₂  y₂         x₁   y₁

(0 - 40) ÷ (-4 - 4)

(-40) ÷ (-8)

<u>Slope = 5</u>

<u></u>

~Hope this helps!~

8 0
2 years ago
Read 2 more answers
Rewrite the expressions below by completing the square.
Mrrafil [7]

Answer:

(x + 2)^2 - 1

Step-by-step explanation:

x^2 + 4x + 1

= (x^2 + 4x + 2 - 2 + 1)

= (x + 2)^2 - 1

3 0
2 years ago
What is the solution to the system of equations y = -x - 5 and y = 2x + 4
Delvig [45]

Answer:

(-3,-2)

Step-by-step explanation:

y = -x - 5

y = 2x + 4

plug in one of the y equations

(2x+4)= -x - 5

2x+4=-x-5

3x=-9

x= -3

plug in x to one of the y equations

y= -(-3) -5

y=3-5

y= -2

x= -3, y= -2

4 0
3 years ago
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