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kifflom [539]
3 years ago
13

Ashley wrote the following sets on the board.

Mathematics
2 answers:
Viktor [21]3 years ago
6 0
-9.75 is a rational number
Lunna [17]3 years ago
3 0
Rational because a rational number is a number that can be written as a fraction or decimal
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Find the point on the graph of y=x^2 where the tangent line has slope m= - 1/3
babunello [35]

Here the graph y=x²

Taking the 1st derivative here of the y it will be

y1 = 2x

m=-1/3

That is m=2x

so x=-1/6

so y=(-1/6)²=1/36

So the coordinate of point will be=(-1/6 , 1/36)

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3 years ago
A physical education teacher wanted to test whether her county’s students are falling below the national proportion. It is known
Ipatiy [6.2K]

Answer:

(a) The population parameter is students who ran the mile in less than 10 minutes.

(b) The hypothesis being tested is:

H0: p = 0.70

Ha: p < 0.70

(c) The significance level is 0.05.

(d) In order to conduct a one-sample proportion z-test, the following conditions should be met:

The data are a simple random sample from the population of interest.

The population is at least 10 times as large as the sample.

n⋅p ≥ 10 and n⋅(1−p) ≥ 10, where n is the sample size and p is the true population proportion.

n⋅p = 756 * 0.70 ≥ 10

n⋅(1−p) = 756 * (1 - 0.70) ≥ 10

All the conditions are met.

(e) p = 504/756 = 0.67

The test statistic, z = (p - p)/√p(1-p)/n = (0.67 - 0.70)/√0.70(1-0.70)/756 = -2.00

(f) The p-value is 0.0228.

(g) Since the p-value (0.0228) is less than the significance level (0.05), we can reject the null hypothesis.

(h) Therefore, we can conclude that less than 70% of students run one mile in less than 10 minutes.

Step-by-step explanation:

7 0
3 years ago
Brandon is selling gift cards. He earns a one-time pay out of $159 and then earns $30 for each gift card he sells. Write a equat
quester [9]

Answer:

g * $30 = p

Step-by-step explanation:

He earns $30 per gift card.

You multiply the amount of gift cards sold by the money you earn per gift card sold. g, being the gift cards sold. p, being the total pay.

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2 years ago
Can anyone help me with this?
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3 years ago
Plz help! I will mark you brainliest!
s2008m [1.1K]

Answer:

  A.  80

Step-by-step explanation:

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