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boyakko [2]
3 years ago
10

The length of a rectangle is 5.9 cm more than 3 times the width. If the perimeter of the rectangle is 57.4cm, what are it's dime

nsions.
Mathematics
1 answer:
navik [9.2K]3 years ago
6 0

Answer:

l = 23 cm and w = 5.7 cm

Step-by-step explanation:

Perimeter = twice the length plus twice the width

let w = width

let l = length

l = 5.9 + 3w

57.4 = 2(5.9 + 3w) + 2w

57.4 = 11.8 + 6w + 2w

57.4 = 11.8 + 8w

45.6 = 8w

w = 5.7

Substitute 5.7 for 'w' to get 'l':

l = 5.9 + 3(5.7)

l = 23

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This right triangle has one leg with a length of 45 units and a hypotenuse with a length of 75 units. What is the length of the
Nesterboy [21]

The length of other leg is 60 units.

Step-by-step explanation:

Given,

Length of one leg = a = 45 units

Length of other leg = b

Length of hypotenuse = c = 75 units

Using pythagoras theorem

a^2+b^2=c^2\\(45)^2+b^2=(75)^2\\2025+b^2=5625\\b^2=5625-2025\\b^2=3600

Taking square root on both sides

\sqrt{b^2}=\sqrt{3600}\\b=60\ units

The length of other leg is 60 units.

Keywords: Pythagorean theorem, square root

Learn more about square root at:

  • brainly.com/question/12892007
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4 0
3 years ago
What is 2 2/5 + 6 2/5?
Alekssandra [29.7K]
2\dfrac{2}{5}+6\dfrac{2}{5}=(2+6)+\left(\dfrac{2}{5}+\dfrac{2}{5}\right)=8+\dfrac{2+2}{5}=8+\dfrac{4}{5}=8\dfrac{4}{5}
6 0
4 years ago
9.
RSB [31]

Answer:

Axis of symmetry: x = 0.5; Vertex: (0.5, –0.75); f(x) = –x2 + x – 1

Step-by-step explanation:

The answer is A because the axis of symmetry is in between 0 and 1, the vertex lies on 0.5 and -0.75, and the parabola opens down so the coefficient of a is -1, and the y-int or the value of c is -1

The vertex of the function is  axis of symmetry is  and the formula for the function is  Option (a) is correct.

Further Explanation:

Given:

Calculation:

The standard form of the parabola is shown below.

Here, the parabola has vertex at  and has the symmetry parallel to x-axis and it opens left.

The general form of the parabola can be expressed as follows,

The graph is a downward parabola.

From the graph it has been observed that the vertex of the parabola is

Symmetry of the graph is  

The -intercepts of the graph is  Therefore, the value of is  

The value of  is -1 as the graph is a downward parabola.

The vertex of the function is  axis of symmetry is  and the formula for the function is  Option (a) is correct.

Learn more:

1. Learn more about unit conversion brainly.com/question/4837736

2. Learn more about non-collinear brainly.com/question/4165000

3. Learn more aboutbinomial and trinomial brainly.com/question/1394854

Answer details:

Grade: High School

Subject: Mathematics

Chapter: Conic sections

Keywords: vertex, symmetry, symmetric, axis, y-axis, x-axis, function, graph, parabola, focus, vertical parabola, upward parabola, downward parabola.

4 0
3 years ago
What is 7/10+20/100?
Firdavs [7]
9/10. make the bottom numbers the same to add fractions. you can do that by multiplying 7/10 by 10/10.

70/100 + 20/100 = 90/100

90/100 = 9/10

you can also reduce 20/100 to 2/10.

7/10 + 2/10 = 9/10
8 0
3 years ago
Read 2 more answers
Find the sum : (i) 23123, 11001 and 21302 (iii) 21031, 12301 and 32211 (v) 21003, 12346 and 21220 (ii) 32101, 12301 and 1032 (iv
Valentin [98]

Answer:

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  • (ii) 32101 + 12301 + 1032 = 45434
  • (iii) 21031 + 12301 + 32211 =  65543
  • (iv) 301242 + 123310 + 10002 = 434554
  • (v) 21003 + 12346 + 21220 = 54569
7 0
3 years ago
Read 2 more answers
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