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Illusion [34]
4 years ago
13

What is the rate of change?

Mathematics
2 answers:
ozzi4 years ago
6 0
Well rate of change is slope. Which is change in y over change in x so find two coordinates so let's say (0,20) and (10,60). The change in y is 40 and the change in x is 10 so the rate of change or slope is 40/10 or Slope= 4

Answer: 4
Shkiper50 [21]4 years ago
5 0

Answer: The correct answer is 4

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kodGreya [7K]

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Step-by-step explanation:

3 0
3 years ago
A person must score in the upper 7% of the population on an admissions test to qualify for membership in society catering to hig
olya-2409 [2.1K]

Answer:

The minimum score a person must have to qualify for the society is 162.05

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

Test scores are normally distributed with a mean of 140 and a standard deviation of 15. This means that \mu = 140, \sigma = 15.

What is the minimum score a person must have to qualify for the society?

Since the person must score in the upper 7% of the population, this is the X when Z has a pvalue of 0.93.

This is Z = 1.47.

So

Z = \frac{X - \mu}{\sigma}

1.47 = \frac{X - 140}{15}

X - 140 = 15*1.47

X = 162.05

The minimum score a person must have to qualify for the society is 162.05

7 0
3 years ago
Tina is ordering pizza for a party.Peats pizza is offering a special of 4 pizza for $26. Pizza palace is selling 10 pizza for $7
Lana71 [14]

Answer:

Peat's Pizza is is the one Tina should order from.

Step-by-step explanation:

If 4-pizzas from Peat's Pizza is 26 dollars, and she wants to order the 4 pizza special, Multiply 26 and 10 to get $260. Now if she wanted to order 4 times from Pizza Palace, which costs 75 dollars for 10 pizzas, Multiply the cost, 75, and the amount of times you want to order, to get the total cost. (Please tell me if I'm wrong! I'm trying to identify what I can.)

5 0
3 years ago
If the ratio of areas of two equilateral is 25:36 then find ratio of height of the triangles ​
Gnom [1K]

Answer:

5 : 6

Step-by-step explanation:

Given ratio of heights = a : b , then

ratio of areas = a² : b²

Here

ratio of areas = 25 : 36 , thus

ratio of heights = \sqrt{25} : \sqrt{36} = 5 : 6

6 0
3 years ago
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