What are five ways to determine if a quadrilateral is a parallelogram?

Answers

Answer 1

Answer: opposite sides are parallel, opposite angles are equal, no curves (only straight lines), there are only 4 sides, and 4 angles,

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How can I find the value of 78 x n when n= 3237

Answers

Replace n with 3237 so you have 78*3237
And you get 252486 as your answer

Hich expression is rational? a. 4.121221222… b.square root of 36 c. square root of 21 d.1.192744502…

Answers

Answer: The correct option is (B) square root of 36.

Step-by-step explanation: We are given to select the correct number that is irrational.

RATIONAL NUMBER: The digits after the decimal are either terminating or repeating.

IRRATIONAL NUMBER: The digits after the decimal are non-repeating and non-terminating.

Option (A) is 4.121221222 . . .

Here, the digits after the decimal are non-repeating and non-terminating. So, the given number is irrational.

Option (B) is square root of 36, which is equal to 6.

6 = 6.00.

Here, the digits after the decimal are terminating. So, the given number is rational.

Option (C) is square root of 21.

We know √21 = 4.5825756 . . .

Here, the digits after the decimal are non-repeating and non-terminating. So, the given number is irrational.

Option (D) is 1.192744502 . . .

Here, the digits after the decimal are non-repeating and non-terminating. So, the given number is irrational.

Thus, the rational number is square root of 36.

Option (b) is correct.

A rational number is any number that can be expressed as the quotient of fraction of two integers.So the answer is b.square root of 36 = √36=6 because 6 is the quotient of 6/1

1. Write an equation in point slope form for the line that has a slope of 6 and contains the point (-8,-7).2. The points (-4,-3) and (-1,-8) are on a line. Find the intercepts to the nearest tenth.

3. Solve 2x-3y=11 by elimination. Express your answer as an ordered paired.
3x+3y=9

4. Solve 2x - 5y = -7 by elimination. Express your answer as an ordered pair.
5x - 3y = 11

5. Order the list of numbers from least to greatest
4.9 X 10^11 , 8.9 X 10 ^18 , 1.3 X 10 ^8 , 6.7 X 10 ^8 , 2.7 X 10 ^18

Answers

1. y - y₁ = m(x - x₁)
     y - (-7) = 6(x - (-8))
       y + 7 = 6(x + 8)
   y + 7 = 6(x) + 6(8)
   y + 7 = 6x + 48
      - 7 -   7
   y = 6x + 41

2. y₂ - y₁ = -8 - (-3) = -8 + 3 = -5 = -1²/₃
    x₂ - x₁ -1 - (-4) -1 + 4 3

3. 2x - 3y = 11
    3x + 3y =   9
      5x = 20
   5 5
      x = 4
     2x - 3y = 11
   2(4) - 3y = 11
   8 - 3y = 11
   - 8 - 8
   -3y = 3
      -3    -3
      y = -1
      (x, y) = (4, -1)

4. 2x - 5y = -7 ⇒   -6x + 15y = 21
    5x - 3y = 11 ⇒ -25x + 15y = -55
      19x = 76
   19    19
      x = 4
   2x - 5y = -7
   2(4) - 5y = -7
   8 - 5y = -7
   - 8 - 8
   -5y = -15
      -5 -5
      y = 3
      (x, y) = (4, 3)

5. 4.9 × 10¹¹, 8.9 × 10¹⁸, 1.3 × 10⁸, 6.7 × 10⁸, 2.7 × 10⁸
    1.3 × 10³, 2.7 × 10⁸, 6.7 × 10⁸, 4.9 × 10¹¹, 8.9 × 10¹⁸
    Least        Greatest

What is the square root of 67

Answers

Every positive number has two square roots.

The square roots of 67 are 8.185... (rounded) and -8.185... (rounded) .

Both are irrational numbers, so they can't be completely written down
with digits. No matter how many decimal places I write, it can never be
enough, because these decimals go on forever and never end.

The square root of 67 is, 8.18535277187

You guys can help me plz idc if you explain

Answers

Y=Mx+b is the answer for 15 I think

The line is parallel to y= 2x + 1 and passes through point (-2,-1).

Answers

Answer:

y = 2x + 3

Step-by-step explanation:

To find the equation of a line, you need 2 things:

1) gradient/slope

2) 1 set of x and y coordinates

To find the slope:

If 2 lines are parallel, they have exactly the same gradient.

So, this line will have a slope of 2 as well (the slope of a line is the coefficient of x in the equation).

To find the equation of the line:

Start with this generic equation:

y - y1 = m (x-x1)

We know that:

(x1, y1) -> (-2, -1) and m= 2

So, we can substitute for the equation:

y- (-1) = 2 (x -(-2))

Simplify, by expanding the brackets:

y + 1= 2 (x+2)

y + 1 = 2x + 4

Rearrange for y:

y = 2x + 3

To double check:

1) The coefficient of x is the slope, we have 2x and the slop is 2, so that's correct

2) Sub in x= -2, and you should get y=-1

y = -4 + 3 = -1, so that's correct too

Hope that helped : )

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