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zysi [14]
3 years ago
6

You are trying to prove that quadrilateral ABCD is a rhombus. You know that both pairs of opposite sides are parallel (a paralle

logram). Which additional fact would prove that ABCD is a rhombus?
Mathematics
2 answers:
Sonbull [250]3 years ago
8 0
The diagonals are perpendicular
sergeinik [125]3 years ago
6 0
Quadrilateral ABCD would be a rhombus if all sides of the quadrilateral are also equal in length. Also add on the fact that none of the angles are right angles. 
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One angle is twice another angle. The sum of the angles is 90 degrees. How many degrees are in each angle. Please explain.
Natali [406]
One angle has 60 degrees, the other angle has 30 degrees.

60 divided by 30 = 2.

and 60 + 30 = 90.
7 0
3 years ago
4(n+2+2n+5+n+6)=-32 How do you show the problem?
yarga [219]

Answer:

n = -21/4 <em>or </em>-5.25

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What is the weight of one half of two thirds of a sack of rice? The sack of rice weighs 99 kilograms.
Eddi Din [679]
First you need to find what 2/3 equals
to do this, take 99 divided by 3
99/3=33

if 1/3 equals 33, two thirds would be 33x2
33x2=66

now, you need to find 1/2 of 66.  this can be done 2 different ways

1.    66 divided by 2    -    66/2=33
OR
2.    66 x 1/2 = 33     OR     66 x .5 = 33

The answer is 33 kilograms

6 0
4 years ago
Read 2 more answers
How many ml of 20 percent acid should be added to pure acid to make 70 ml of 30 percent acid?
Novay_Z [31]

Answer:

61.25%

Step-by-step explanation:

How many ml of 20 percent acid should be added to pure acid

to make 70 ml of 30 percent acid?

:

let x = amt of 20% mixture

then

(70-x) = amt of pure acid

:

0.20x + (70-x) =0 .30(70)

0.20x + 70 - x = 21

= 21 - 70

-0.8x =-49

x = 61.25%

x = +61.25 ml of 20% stuff

8 0
3 years ago
How is a calculation of net worth different from a day-to-day or month-to-month tallying of expenses?
alina1380 [7]
The difference in tallying of expenses from a day to day and month to month is the consistency. in a day to day basis it is consistent the time for a day is 24 hrs it will not change, so you will really know why the expenses goes up or down/ unlike for a month to month it is inconsistent,, some months have 30, 31 or 28 days in a month.
8 0
3 years ago
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