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Alekssandra [29.7K]
3 years ago
10

Name another way to prove a quadrilateral is a rectangle.

Mathematics
1 answer:
snow_lady [41]3 years ago
6 0
Actually there's too many ways but this was the simplest ways

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Pleasantburg has a population growth model of P(t)=at2+bt+P0 where P0 is the initial population. Suppose that the future populat
Salsk061 [2.6K]

Answer: In June 2097

Step-by-step explanation:

According to the model, to find how many years t should take for  P(t)=21100 we must solve the equation  0.9t^2+6t+14000=21100. Substracting 21100 from both sides, this equation is equivalent to 0.9t^2+6t-7100=0.

Using the quadratic formula, the solutions are t_1= \frac{-6-\sqrt{6^2 -4*0.9*(-7100)}}{2*0.9}=-92.21 and t_2=\frac{-6+\sqrt{6^2 -4*0.9*(-7100)}}{2*0.9}=85.54. The solution t_1=-92.21 can be neglected as the time t is a nonnegative number, therefore t=t_2=85.54.

The value of t is approximately 85 and a half years and the initial time of this model is the January 1, 2012. Adding 85 years to the initial time gives the date  January 2097, and finally adding the remaining half year (six months) we conclude that the date is June 2097.

6 0
3 years ago
Can someone answer this ill give 20 brainly points
antiseptic1488 [7]

Answer:

The answer you're looking for is B. 27.55 m

6 0
2 years ago
What is the slope of y=-4?
aalyn [17]

Answer:

m=0

Step-by-step explanation:

The slope is m=0 and the Y intercept should be b= -4 .

3 0
2 years ago
Read 2 more answers
Select each perfect square
3241004551 [841]

Answer:

hi

Step-by-step explanation:

1 and 2 no are perfect square other r not

8 0
3 years ago
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Machine A can produce 435 widget in 3 hours. At this rate how many widget can machine A produce in 7 hours?
Vesna [10]

Answer:

1015 widgets

Step-by-step explanation:

First investigate how many widgets can machine A produce in 1 hour:

If it produces 435 in 3 hours, then it will produce one third of that in one hour:

In ONE (1) hour \frac{435}{3} = 145 widgets

Therefore in seven (7) hours it will produce seven times the amount it does in one hour, that is:

145 * 7 = 1015 widgets

3 0
3 years ago
Read 2 more answers
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