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3 years ago

Do all parallelograms have reflectional symmetry? explain your reasoning?

Mathematics

1 answer:

shepuryov [24]3 years ago

6 0

Rhombus, rectangle, square these have lines of symmetry. others i am not much sure

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claudia bought a television at a 25% discount . the original price of the television was $349. there wasa 7% sales tax. how much

Scrat [10]

349 * .75 = $261.75
$261.75 * 1.07 = $280.07

6 0

3 years ago

If miley has 200 pencils and Katie has 300 more pencils then how many more does Katie have then miley

Yakvenalex [24]

Answer: 300

Step-by-step explanation: 300+200=500

then 500-200=300

3 0

4 years ago

Read 2 more answers

Compare the two functions. <img src="https://tex.z-dn.net/?f=f%28x%29%20%3D%20%5Cfrac%7B1%7D%7B50%7D%20%283%29%5Ex" id="TexFormu

Anit [1.1K]

Answer:

As x increases, the rate of change of f(x) exceeds the rate of change of g(x).

Step-by-step explanation:

Hope this helps :)

5 0

3 years ago

Which is true 10.59>10.60<br> 10.590=10.59<br> 10.43<10.24 <br> 9.0005=9.0050

mart [117]

I think the second i didnt make it on paper but its the one that more convence me

4 0

3 years ago

A mattress store sells only king, queen and twin-size mattresses. Sales records at the store indicate that the number of queen-s

Nitella [24]

Answer:

The probability that the next mattress sold is either king or queen-size is P=0.8.

Step-by-step explanation:

We have 3 types of matress: queen size (Q), king size (K) and twin size (T).

We will treat the probability as the proportion (or relative frequency) of sales of each type of matress.

We know that the number of queen-size mattresses sold is one-fourth the number of king and twin-size mattresses combined. This can be expressed as:

$P_Q=\dfrac{P_K+P_T}{4}\\\\\\4P_Q-P_K-P_T=0$

We also know that three times as many king-size mattresses are sold as twin-size mattresses. We can express that as:

$P_K=3P_T\\\\P_K-3P_T=0$

Finally, we know that the sum of probablities has to be 1, or 100%.

$P_Q+P_K+P_T=1$

We can solve this by sustitution:

$P_K=3P_T\\\\4P_Q=P_K+P_T=3P_T+P_T=4P_T\\\\P_Q=P_T\\\\\\P_Q+P_K+P_T=1\\\\P_T+3P_T+P_T=1\\\\5P_T=1\\\\P_T=0.2\\\\\\P_Q=P_T=0.2\\\\P_K=3P_T=3\cdot0.2=0.6$

Now we know the probabilities of each of the matress types.

The probability that the next matress sold is either king or queen-size is:

$P_K+P_Q=0.6+0.2=0.8$

8 0

3 years ago