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3 years ago

What are the four properties of parallelograms?

2 answers:

7 0

Opposite sides are parallel by definition
Opposite sides are congruent
opposite angles are congruent
consecutive angles are supplementary
The diagonals bisect each other

zepelin [54]3 years ago

3 0

There are six important properties of parallelograms to know:

<span>Opposite sides are congruent (AB = DC).Opposite angels are congruent (D = B).Consecutive angles are supplementary (A + D = 180°).If one angle is right, then all angles are right.The diagonals of a parallelogram bisect each other.<span>Each diagonal of a parallelogram separates it into two congruent triangles.</span></span>

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Three phones in a shipment of eighteen are known to be broken. A randomly selected phone is removed from the shipment and tested

statuscvo [17]

Answer:

$\frac{14}{17}$

Step-by-step explanation:

Number of phones broken = 3

Number of phones not broken = 15

Total number of phone in the shipment = 18

Since a not broken phone has been randomly selected, the number of phones not broken reduces to 14. And the total number of phones would be 17.

Pr(of newly selected phone NOT broken) = $\frac{number of not broken phones}{total number of phones}$

= $\frac{14}{17}$

Therefore, the probability of the selected phone not being broken is $\frac{14}{17}$ .

5 0

3 years ago

Please help due in 15 minutes!!!!!

gizmo_the_mogwai [7]

Answer:

44ft

Step-by-step explanation:

The formula for circumference is 2 * π * radius and in this case we want to use 3.14 for π and so we do 2 x 3.14 x 7 because the radius is half of the diameter (14) and once you do that you end up getting 43.96 and once you round you get 44ft so you are correct.

4 0

3 years ago

A piece of cloth is 6 1/4 meters long. If the cloth is cut into 1/2 meter long pieces, how many pieces can be made?

Greeley [361]

Answer:

Step-by-step explanation:

8 0

3 years ago

Tina ordered a replacement part for her desk. It was shipped in a box that measures 4inches By 4inches by 14 inches. What is the

Sergeeva-Olga [200]

Answer:

15 inches

Step-by-step explanation:

The space diagonal of a rectangular prism is the root of the sum of the squares of the edge lengths. The longest straight part that will fit in the box will be at most ...

l = √(4² +4² +14²) = √228 ≈ 15.10 . . . . inches

The greatest length the part could have been is 15 inches.

7 0

3 years ago

The voltage V of an audio speaker can be represented by V= 4 sqrt P , where P is the power of the speaker. An engineer wants to

Marysya12 [62]

Answer:

$Voltage=76\ volts$

Step-by-step explanation:

$Given\ V=4\sqrt{P}\\\\where\ V\ is\ voltage\ and\ P\ is\ Power.$

$Here\ power\ is\ given\\\\P=361\ watts\\\\Substitute\ P\ in\ the\ given\ equation\\\\V=4\sqrt{P}\\\\V=4\sqrt{361}\\\\V=4\sqrt{19\times 19}\\\\V=4\times 19\\\\V=76\ volts$

8 0

3 years ago