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3 years ago

Are all quadrilaterals parallelograms?

Mathematics

2 answers:

nika2105 [10]3 years ago

5 0

Answer:

Step-by-step explanation:

It is backwards.

Good luck Bud!

Stay safe from COVlD-19!

kondor19780726 [428]3 years ago

3 0

Answer:

No, but all parallelograms are quadrilaterals.

Step-by-step explanation:

Take a trapezoid, for example. A trapezoid is a quadrilateral because it has 4 sides, but it does not contain 2 sets of parallel sides thus making it not a parallelogram.

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The ratio of carbon-14 to carbon-12 in a piece of wood discovered in a cave is R = 1/917. Estimate the age of the piece of wood

Colt1911 [192]

Answer:

The answer is " $\bold{6.6 \times 10^{12}\ years}$ "

Step-by-step explanation:

Let the given value is:

$R=\frac{1}{9^{17}}\\\\\to \frac{N_{c_{14}}}{N_{c_{12}}}=\frac{1}{9^{17}}\\\\\to t=\frac{2.303 \times 9^{17}}{5717}=6.6\times 10^{12}\ years$

7 0

3 years ago

If a penny is tossed five times, what is the probability of all tails? a zero b 1/16 c 1/32 d larger than the probability of all

amid [387]

Required probability = (1/2)^5 = 1/32

Its c (assuming that its a fair coin).

4 0

3 years ago

Order the numbers from least to greatest<br> √99 , 2 , 9.8

spin [16.1K]

Answer:

2, 9.8, $\sqrt{99}$

Step-by-step explanation:

The decimal form of $\sqrt{99}$ is 9.949

3 0

3 years ago

Read 2 more answers

An animal shelter spends $5.00 per day to care for each bird and $7.50 per day to care for each cat. Jayden noticed that the she

Vilka [71]

Answer:

24 birds

Step-by-step explanation:

Let b represent the number of birds at the shelter on Wednesday. Then the cost of care for the 41 animals is ...

5b +7.5(41 -b) = 247.50

-2.5b +307.50 = 247.50 . . . . . simplify

-2.5b = -60 . . . . . . . . . . . . . . . . subtract 307.50

b = 24 . . . . . . . . . divide by -2.5

The number of birds at the shelter on Wednesday was 24.

7 0

3 years ago

If someone knows the answer please help

pickupchik [31]

The correct answer is D. D'(1, 5), E'(-1, 3), F'(-1, -4), G'(1, -2).

It's because of this: You need to calculate the distances, and they are in this case symmetric, so you look how far is from one side, and it will be the same on the other side. When you put it on graph, the coordinates are clear and the correct answer is D.

7 0

3 years ago