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Zina [86]
3 years ago
14

I just need help :))

Mathematics
2 answers:
rosijanka [135]3 years ago
6 0
U will take the two diagrams
And name them A N B
U then solve the triangle by triangle
andriy [413]3 years ago
5 0

Answer:

to find y use the 3,4,5 method:

to get 9 as the base the 3 is multiplied by 3 there multiply 4×3to get twelve as the height then multiply 5 by three to get 15 as the hypotenuse so to that point the answer is definitely choice D

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Tatami mats are used as a floor covering in japan. One possible layout uses four identical rectangular mats and one square mat,
Maksim231197 [3]

a) Given

Total area = 81 feet squared.

 Let the area of the square mat = x feet.

From question, area of the rectangular mat is twice that of square mat.

 So, the area of the rectangular mat = 2 x feet.

Now,

Total area = 81 feet squared

Then,

      4(2 x) + x = 81\\ \\ 9 x = 81\\ \\  x = \frac{81}{9}\\ \\ x = 9\\

Hence  the area of the one rectangular mat = 2*9 = 18 feet squared

b) Let the width of the rectangular mat = y feet.

  Then length of the mat = 2 y feet.

   Area of the rectangle = 2 y* y = 2 y^{2}

   and area of rectangle = 18 feet squared.

   So,

 2 y^{2} = 18\\ y^{2} = 9\\ y= \pm3\\

Width can not be negative.

Hence, the width of the rectangular mat = 3 feet

and  length of the rectangular mat = 3*2 = 6 feet

8 0
3 years ago
Solve x 2 + 9x + 8 = 0 by completing the square. What are the solutions?
vivado [14]

x^2+9x+8=0

 (x+1)(x+8)=0

x+1=0

x=-1

x+8 = 0

x=-8


 solutions are -1 and -8

3 0
3 years ago
Please help! Algebra 1 math Guaranteed brainliest!
Semenov [28]
Hello! And thank you for your question!

All you can do is simplify √28 to 2√7

Then the equation becomes 2√7 - 2√7

Subtract the like terms to get 0.

Final Answer:

It is a rational and equal to 0.
5 0
3 years ago
The axis of symmetry for a function in the form f(x) = x2 + 4x - 5 is x = -2. What are the coordinates of the vertex of the
umka2103 [35]

Answer:

(- 2, - 9 )

Step-by-step explanation:

The axis of symmetry passes through the vertex of the parabola.

Thus the x- coordinate of the vertex is x = - 2

To find y substitute x = - 2 into f(x)

f(- 2) = (- 2)² + 4(- 2) - 5 = 4 - 8 - 5 = - 9

Vertex = (- 2, - 9 )

8 0
3 years ago
Read 2 more answers
Y = 3x - 24<br> 5x - y = 8
Anuta_ua [19.1K]
What is your question
4 0
3 years ago
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