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PilotLPTM [1.2K]
2 years ago
7

John says that because rhombuses do not have perpendicular sides, they cannot be rectangles. Explain his error in thinking

Mathematics
2 answers:
Ksenya-84 [330]2 years ago
7 0
Even though most rhombuses are not rectangles(their angles are not all 90)
Some are. The only one that is, is a square. It is a rhombus, and it is a rectangle.
ankoles [38]2 years ago
3 0

For a rhombus to be a rectangle, a quadrilateral must have 4 equal sizes. However, some rhombuses, particularly squares have perpendicular sides and they are also rectangle.

<h2>Further Explanation</h2>

Therefore, a rhombus can be a rectangle only if all the angles are 90 degree and also a rectangle can be Rhombus only if the sides of the rectangle have equal length.  

A definition of a square also fits for a rectangle and Rhombus, because all the angles are 90 degree in rectangle and in rhombus, all the size has equal length.  

A rectangle has four sides with flat shape and all the angle is a right angle. Since all the sides are equal, a rectangle is called equiangular quadrilateral. It is also called parallelogram due to the fact that all the lines are parallel, a parallelogram is a quadrilateral where the opposite sides are equal and parallel.  

A rhombus has 4 equal straight sides with a flat shape. All the sides of a rhombus have equal length. The opposite sides are equal and parallel. The adjacent sides of a rhombus are supplementary.

Also by definition, all the sides in rhombuses are congruent and it has all the properties of a parallelogram particularly, the parallel sides, opposite angles and consecutive angles

LEARN MORE:

  • Marvin says that all rhombuses are squares brainly.com/question/1289560
  • What do rectangles and rhombuses have in common brainly.com/question/1929946

KEYWORDS:

  • perpendicular sides
  • rhombuses
  • rectangles
  • parallel sides
  • parallelogram
  • consecutive angles
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Please help me out!​
IgorLugansk [536]

w=7.5

Step-by-step explanation:

area of triangle is 6x5=30/2= 15 and then you divide 15 which 7.5

8 0
2 years ago
What is the value of x in the diagram?
dalvyx [7]

Answer:

x = 30

Step-by-step explanation:

here 50 is hypotenuse as it is opposite of 90 degree.

x and x + 10 are the two other smaller sides of a right angled triangle respectively.

using pythagoras theorem,

a^2 + b^2 = c^2

x^2 + (x + 10)^2 = 50^2

x^2 + x^2 + 20x + 100 = 2500

2x^2 + 20x + 100 = 2500

2x^2 + 20x + 100 - 2500 = 0

2x^2 + 20x - 2400 = 0

2(x^2 + 10x - 1200) = 0

x^2 + 10x - 1200 = 0

x^2 + (40 - 30) - 1200 = 0

x^2 + 40x - 30x - 1200 = 0

x(x + 40) - 30(x + 40x) = 0

(x + 40)(x - 30) = 0

either x + 40 = 0          OR x - 30 = 0

x = 0 - 40

x = -40

x - 30 = 0

x = 30

x = -40,30

since the length and distance is not measured in negative ur answer will be 30

credit goes to sreedevi102

thank u very much . At first i was wrong and giannathecookie i m really sorry

3 0
3 years ago
Read 2 more answers
A boat costs $12,050 and decreases in value by 12% per year. How much will the bout be worth after 9 Years
Mrac [35]
Value of the boat after 9 years= 12050*(1-0.12)^9
=$3814(correct to nearest integer)
8 0
3 years ago
Find the slope of the line passing through the 2 points (-7,8), (-4,3
jeyben [28]

Answer:

5/-3

Step-by-step explanation:

Slope = (y2 - y1)/(x2 - x1)

m = (8 - 3)/(-7 + 4)

m = 5/-3

3 0
2 years ago
A random sample of 20 houses selected from a city showed that the mean size of these houses is 1880 square feet with a standard
azamat

Answer:

Option C

Step-by-step explanation:

Given that for a  random sample of 20 houses selected from a city showed that the mean size of these houses is 1880 square feet with a standard deviation of 320 square feet.

X, the sizes of houses is Normal

Hence sample mean will be normal with

Mean = 1880

and std dev = \frac{320}{\sqrt{20} } \\=71.5542

For 90% confidence interval critical value for t with degree of freedom 19 is

1.328

Confidence interval upper bound

= mean + margin of error

= 1880+1.328*71.55\\=1975

Option C is right

3 0
3 years ago
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