All categories

2 years ago

All parallelograms are rectangles. true or false

1 answer:

6 0

That's false. Not all parallelograms are rectangles, only some of them are.
If a parallelogram wants to be a rectangle, then it has to agree to have a
right angle (90 degrees) at one corner.

(I know, I know. Rectangles have right angles at ALL four corners.
But if a parallelogram has one right angle AND it's still a parallelogram,
then it turns out that all four of its angles are right angles. So if you tell
a parallelogram that one of its angles has to be a right angle, and it wants
to still be a parallelogram, then it must turn into a rectangle.)

You might be interested in

Solve this system of linear equations. Separate

Gelneren [198K]

Answer:

x 2 y -4

Step-by-step explanation:

13x = -54 -20y give it is A

-10x = 60 + 20y give it is B

A + B the sum of the left side of equation is equal to the sum of the right side of equation

13 + (-10x) = -54 -20y + 60 + 20y

3x = 60-54

3x = 6

x=2

so put the x value in A or B equation you can receive y value (B is easier)

y = -4

7 0

3 years ago

Amanda's gross annual salary is $62,112 what is the maximum amount of rent she can afford to pay

abruzzese [7]

Answer is 1866 dollars

7 0

3 years ago

What are the zeros of the following quadratic equation: y = 6x2 - 17x - 3

Mama L [17]

Answer:

$\displaystyle x=-\frac{1}{6}, 3$

Step-by-step explanation:

Hi there!

$y = 6x^2 - 17x - 3$

Factor by grouping:

$y = 6x^2 - 18x+1x - 3\\y = 6x(x- 3)+1x - 3\\y = 6x(x- 3)+(x - 3)\\y = (6x+1)(x- 3)$

Let y=0. Apply the zero product property:

$0 = (6x+1)(x- 3)$

$6x+1=0\\6x=-1\\\\\displaystyle x=-\frac{1}{6}$

AND

$x-3=0\\x=3$

I hope this helps!

5 0

3 years ago

Huda opened a bank account with $30.00 and deposited $25.00 every month. After several months, she had a total of $180 in her ac

krek1111 [17]

Answer: C.) 6 months

3 0

3 years ago

Read 2 more answers

If a data value in a normal distribution has a negative z-score, which of the following must be true?

mel-nik [20]

Correct Answer:
The data value must be less than the mean.

The formula for the z value is:

z-value = (Data value - Mean) / Standard Deviation

The z-value will be negative when the Numerator of the above expression will be negative. The numerator will be negative only when the Data Value is less than the mean value. For example, for a data value of 5 and mean value 8, the numerator will be -3, and when it will be divided by standard deviation, the resulting z value will be negative.

So, Third option is the correct answer.

4 0

3 years ago

Read 2 more answers