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Lesechka [4]
3 years ago
12

Every parallelogram is a square?

Mathematics
1 answer:
saul85 [17]3 years ago
5 0

Answer:

every parallelogram is a square? False

every rectangle with four congruent sides is a square? True

every rectangle is a quadrilateral? True

every quadrilateral is a rectangle?​ False

Step-by-step explanation:

every parallelogram is a square?

A parallelogram has two opposite pairs of parallel lines and opposite congruent sides. A square needs to have 4 right angles and all sides need to be equal. In the restrictions of a parallelogram, these cannot be concluded, therefore parallelogram are not always squares.

every rectangle with four congruent sides is a square?

Square require 4 congruent sides and 4 right angles. Rectangles already have  4 right angles. If you add 4 congruent sides to the mix, it means that these rectangles are always squares.

every rectangle is a quadrilateral?

A quadrilateral is defined by a shape having 4 sides. Rectangles have 4 sides, so they fit into the category of quadrilaterals.

every quadrilateral is a rectangle?​

A quadrilateral is a just a shape with four sides. We do not know if it has 4 right angles, so not every quadrilateral is a rectangle.

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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3 years ago
Find the number that makes the ratio 10:5 :20​
GarryVolchara [31]

Answer:

Step-by-step explanation:

x/20=10/5

x=10(20)/5

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6 0
3 years ago
One number exceeds another by 5. The sum of the numbers is 89. What are the numbers ?
Leona [35]

Answer:

42

Step-by-step explanation:

89-5=84

84÷2=42

and reverse it to check

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7 0
3 years ago
A store that buys and sells used video games buys a game at a cost of ​$9 and sells it at a selling price of ​$13. Find the mark
Bingel [31]
Markup = $4
b) markup as a percentage of cost is 33.3%
Step-by-step explanation:
Markup
markup = selling price - cost
= $13 - 9
... markup = $3
Markup as a Percentage of Cost
To find the percent markup, divide the markup by the reference value and multiply the ratio by 100%. The reference value for markup is usually cost price, but sometimes may be selling price.
... markup / cost × 100% = 3/9×100% = 33 1/3% ≈ 33.3%
4 0
3 years ago
Read 2 more answers
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