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2 years ago

Tlaloc pumped up 56 balls. He pumped up 5 dodge balls for every 9 other balls.

Mathematics

1 answer:

borishaifa [10]2 years ago

6 0

Answer:

What do you need from this question? Its not asking anything.

Step-by-step explanation:

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PLEASE HELP!! #8 k(x)=4x-2 on [3, 3+h]

zlopas [31]

X=h/4+5/4 is the correct answer

4 0

3 years ago

there are 9 boys in a class of 14 students. a)what is the ratio of boys to girls. b) what is the ratio of girls to all students

ElenaW [278]

Answer:

a). 9 to 5

b). 5 to 14

Step-by-step explanation:

If there are 9 boys then there are 5 girls because 14 - 9 = 5.

So, there are 5 girls of 14 students in the class.

4 0

3 years ago

A jewelry store is having a 40% off sale for all necklaces. During this sale, what is the cost of a necklace that regularly cost

ELEN [110]

Answer: 18 dollars

Step-by-step explanation:

0.40 times 45 = 18 dollars

6 0

2 years ago

A statistics practitioner in a large university is investigating the factors that affect salary of professors. He wondered if ev

uysha [10]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The null hypothesis is $H_o : \beta_1 = 0$

The alternative hypothesis is $H_1 : \beta_1 \ne 1$

Step-by-step explanation:

From the question we are told that

The number observations is $n = 100$

The annual salary (in dollars) is y

The mean score on teaching evaluation is x

The the relationship between the y and x is

$y = \beta_0 + \beta _1 x + \epsilon$

Where $\beta _1$ is the mean of the equation so

The null hypothesis is $H_o : \beta_1 = 0$

The alternative hypothesis is $H_1 : \beta_1 \ne 1$

6 0

3 years ago

Given a mean of 150 and a standard deviation of 25 Define the interval about the mean that contains 95% of the data.

ohaa [14]

By normal curve symmetry

from normal table 
we have z = 1.15 , z = -1.15 

z = (x - mean) / sigma 
1.15 = (x - 150) / 25 
x = 178.75 

z = (x - mean) / sigma 
-1.15 = (x - 150) / 25 
x = 121.25 

interval is (121.25 , 178.75) 

Pr((121.25-150)/25 < x < (178.75-150)/25) 
is about 75%

7 0

3 years ago