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Goshia [24]
3 years ago
12

A quadrilateral has 4 right angles, 2 pairs of sides of equal length,2 pairs of opposite sides that are parallel. The pairs of o

pposite sides are not the same length. What quadrilateral could it be?
Mathematics
1 answer:
tekilochka [14]3 years ago
6 0
That is describing a rectangle! The only quadrilaterals with 4 right angles are squares and rectangles. Squares have equal sides but rectangles have one pair of parallel sides that is longer than the other. Hope this helps! If you get more than one answer and see it fit to do so, please mark me Brainliest Answer! Thank you!
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The answer would be C) because there are 11 possibilities of who can line up first, and after the first person, 10 possibilities, then 9, and so on. So you would need to multiply 11x10x9x8x...x1.
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7. Virus growth is an example of which type of function?
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How do you evaluate an algebraic expression?
vodomira [7]

Answer:

  follow the Order of Operations

Step-by-step explanation:

An algebraic expression cannot be <em>evaluated</em> unless all of its variables have been replaced by numerical values. (It can be <em>simplified</em>, but not <em>evaluated</em> if it contains variables.)

A collection of numbers and math symbols is interpreted according to the Order of Operations. This order reflects a precedence of operations that is generally agreed or understood to be applied to algebraic expressions. Operations with the highest precedence are performed first. Operations with equal precedence are generally performed in order, left to right. (There are exceptions.) Parentheses or other grouping symbols are used to modify the order of operations as may be necessary.

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Here is a description of the most often seen operations in an algebraic expression, in order of precedence (highest to lowest).

1. Parentheses or Brackets -- any expression enclosed in parentheses or brackets is evaluated first. Evaluation is according to the order of operations. That means that if parentheses are nested, expressions in the innermost parentheses are evaluated first.

2. Exponents or Indices -- Expressions with exponents are evaluated next. In this context, roots are fractional exponents. If exponents are nested, they are applied right to left:

  3^2^4 = 3^(2^4) = 3^16 = 43,046,721 . . . for example

Parentheses modify this order, so ...

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The exponent is taken to be the first number immediately following the exponentiation symbol, so ...

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Again, parentheses alter this order, so ...

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  9/3*2 = 3*2 = 6

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You will also note that 9/3*2 is not the same as 9/(3*2). That is, the denominator in the division is only the first number after the division symbol. This is also true for expressions involving variables:

  b/2a = (b/2)*a

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  PEMDAS

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Working this according to the order of operations, we have ...

  = 10 × 4 - 2 × (16 ÷ 4) ÷ 2 ÷ (1/2) + 9 . . . . . exponent inside parentheses

  = 10 × 4 - 2 × 4 ÷ 2 ÷ (1/2) + 9 . . . . . division inside parentheses

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  = 40 - 8 ÷ 2 ÷ (1/2) + 9 . . . . . . second multiplication

  = 40 - 4 ÷ (1/2) + 9 . . . . .  first division

  = 40 - 8 + 9 . . . . . . second division

  = 32 . . . . . . first addition

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Tcecarenko [31]

Answer:

Hello!  3 1/8 is a mixed fraction.  

Step-by-step explanation:


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Is .............................................................................................................................
murzikaleks [220]

Answer:

yes

Step-by-step explanation:

8 0
3 years ago
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