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3 years ago

This negative and positive stuff is really confusing me can anyone please help?

Mathematics

1 answer:

RSB [31]3 years ago

7 0

Answer:

Positive integers have values greater than zero. Negative integers have values less than zero. Zero is neither positive nor negative. The rules of how to work with positive and negative numbers are important because you'll encounter them in daily life, such as in balancing a bank account, calculating weight, or preparing recipes. (THIS EXPLAINS WHT THEY R, HOPE THIS HELPS U)

Step-by-step explanation:

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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

if f is a second degree polynomial function such that f(3) = 5, f' (3) = 6, and f'' (3) = 4, what is the value of f(2)

insens350 [35]

Answer:

that is the true answer..

good luck

6 0

3 years ago

PLEASE HELP WILL GIVE BRAINLEST IF CORRECT

Gekata [30.6K]

Please edit the question and attach a picture of the figure so that we can answer more accurately :)

3 0

3 years ago

Read 2 more answers

Jerry indicated that after tossing a penny 30 times, the relative frequency of heads was 0.47 (to the nearest hundredth). He ind

natali 33 [55]

Answer:

Incorrect.

Step-by-step explanation:

1 toss could not change the frequency by such a large margin 0.47 ---> 0.55.

The number of heads obtained in 30 tosses = 30 * 0.47 = 14.

So if the next toss came up heads the relative frequency of heads would be

15/31 = 0.48.

4 0

3 years ago

A 3-mi cab ride cost $7.90. A 9-mi cab ride cost $18.70

Sauron [17]

Answer:

first part: y=2.63x

second part: y=2.08x

Step-by-step explanation:

1) 7.90 / 3 = 2.633333 (I rounded to 2.63)

2) 18.70 / 9 = 2.07777 (I rounded to 2.08)

I hope this what you were asking

3 0

3 years ago