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o-na [289]
4 years ago
7

Given that g(x)=2x^2-5x+2, find g(-2).

Mathematics
1 answer:
solmaris [256]4 years ago
4 0
Hope it’s helpful ^^

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I'm doing one step equations on intergers can someone help
Sonbull [250]
The anwser is 14 because 14-11=3
3 0
3 years ago
Emilia and Ferdinand took the same freshman chemistry course: Emilia in the fall, Ferdinand in the spring. Emilia made an 83 on
Wewaii [24]

Answer:

z = \frac{83-76}{8}=0.875

z = \frac{79-65}{12}=1.167

As we can see the z score for Ferdinad is higher than the z score for Emilia so on this case we can conclude that Ferdinand was better compared with his group of reference.

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Emilia case

Let X the random variable that represent the scores of a test, and we know that

Where \mu=76 and \sigma=8

The z score formula is given by:

z=\frac{x-\mu}{\sigma}

Since Emilia made 83 points we can find the z score like this:

z = \frac{83-76}{8}=0.875

Ferdinand case

Let X the random variable that represent the scores of a test, and we know that

Where \mu=65 and \sigma=12

The z score formula is given by:

z=\frac{x-\mu}{\sigma}

Since Ferdinand made 79 points we can find the z score like this:

z = \frac{79-65}{12}=1.167

As we can see the z score for Ferdinad is higher than the z score for Emilia so on this case we can conclude that Ferdinand was better compared with his group of reference.

5 0
3 years ago
Which system of equations can be used to solve the following problem?
stira [4]
I hope this helps you

4 0
4 years ago
Read 2 more answers
Determine what type of model bet fits the given situation: Every day, half a bacteria population dies. A. Linear B.quadratic C.
makvit [3.9K]

Answer:

Exponential

Step-by-step explanation:

<em>Starter:</em>

According to the title:

"Every day, half a bacteria population dies."

Exponential: y = ab^x ( b > 0 , b ≠ 1)

So the answer is C.

<em>Calculations:</em>

An exponential model is of the form y = a • b^t.

If you start with population of 500 million bacteria

t = 0

so 500 million = a • b^0 = a

Since every day half the population dies then in 1 day population will be 250 million

so a = 500 million, y = 250 million and t = 1

250 million = 500 million • b^1

b = 0.5

Therefore your equation would be

y = 500 million (or whatever the pop) • 0.5^t

Where t = number of days

This could also be written in exponential form ( e = 2.73)

4 0
2 years ago
Which of the following is the circumference of a circle with a radius of 4 cm? Use 3.14 for π.
LekaFEV [45]

Answer:

Formula of the circumference:

2\pi \: r \\ so \: 2 \times 3.14 \times 4 = 25.12

8 0
3 years ago
Read 2 more answers
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