MATHEMATICS COLLEGE

Kristi went to the coffee shop and got each ofher 3 kids a $4 cake pop. She also got herself
a $5 chai tea latte. How much did Kristi spend
at the coffee shop?

Answers

Answer 1

Answer:

Answer:

$17

Step-by-step explanation:

Hope this helps!

Answer 2

Answer:

Answer:

12 dollars

Step-by-step explanation:

she spent 4 dollars for each of 3 kids so what I did was multiply 3 times 4, and got 12 dollars then she spent 5 dollars on her self which was 17 dollars she spent in the coffee shop.

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There are twenty classes at each of two middle schools. The number of students in each class at each school is shown in the dot plots below.Number of Students in Each Class at Poplar Middle SchoolA dot plot. A number line going from 20 to 29 labeled Number of Students. There are 3 dots above 20, 5 above 21, 7 above 22, 4 above 23, 1 above 24, and 0 above 25, 26, 27, 28, and 29.Number of Students in Each Class at Oak Middle SchoolA dot plot. A number line going from 20 to 29 labeled Number of Students. There is 1 dot above 20, 2 above 21, 2 above 22, 4 above 23, 3 above 24, 2 above 25, 2 above 26, 2 above 27, 1 above 28, and 1 above 29.Which statement correctly compares the mean number of students for the data in the plots?There are about 2 more students in each class at Poplar Middle School than at Oak Middle School.There are about 2 more students in each class at Oak Middle School than at Poplar Middle School.There are about 5 more students in each class at Poplar Middle School than at Oak Middle School.There are about 5 more students in each class at Oak Middle School than at Poplar Middle School.
B. The difference between the cash price and the initial deposit in hire purchase is known as ?

Nondigestible carbohydrates can be used in diet foods, but they may have Problem 7.2 effects on colonic hydrogen production in humans. We want to test to see if inulin, fructooligosaccharide, and lactulose are equivalent in their hydrogen production. Preliminary data suggest that the treatment means could be about 45, 32, and 60 respectively, with the error variance conservatively estimated at 35. How many subjects do we need to have power .95 for this situation when testing at the ????1 = .01 level?

Answers

Answer:

null hypothesis = µ1=µ2=µ3; µ1= popuation mean of inulin µ2 = population mean of fructicoligosaccharide =µ3=population mean of lactulose

alternative hypothesis =µ1≠µ2 ≠µ3

t1= µ-45/s1 / N-1

at the significance level 0.01

t at ᵅ/2 =0.005 and degree of freedom= 35-1=34 is 2.25

t1 = µ-32/s1/N-1

2.25= µ-45/s1/34

= s1/34= µ-45/2.25

=s1 =(µ-45/2.25)*34

t2= µ-32/s2/34

2.25 =µ-32/s2/34

s2/34= µ-32/2.25

s2=µ-32/2.25*34

T= 45-32/s1/sqrt34+s2/sqrt34

t at 0.005 and no of grees of freedom 68 =2.37

2.37=45-32/

or s1/sqrt34+s2/sqrt34 = 13/2.37

s1+s2 = 13/2.37 *5.83

s1+s2= 31.98 or 32

(µ1-45/2.25)*34+µ2-32/2.25*34=32

or µ1+µ2 = 2525

µ1=2525-µ2

µ1 and µ2 are not equal

thus null hypothesis is rejected

conclusion all the three components are not in equal amount in hydrogen production

Explanation : in this experiment we have to prove whether the means of insulin,fructicoligosaccharide and lactulose are equal. so even if we prove that two of them are not equal null hypothesis will be rejected. we use student-t test because we have to compare the means of two population.

Carpetland salespersons average $8000 per week in sales. Steve Contois, the firm's vice president, proposes a compensation plan with new selling incentives. Steve hopes that the results of a trial selling period will enable him to conclude that the compensation plan increases the average sales per salesperson. a. Develop the appropriate null and alternative hypotheses.

Answers

Answer:

Null hypothesis: The average sales per salesperson of Carpetland is $8000 per week

Alternate hypothesis: The average sali per salesperson of Carpetland is greater than $8000 per week

Step-by-step explanation:

The null hypothesis is a statement deduced from a population parameter which is subject to testing

The alternate hypothesis is a statement that negates the alternate hypothesis which is accepted if the null hypothesis is tested to be false

1/2(3/5x-8)+7/4(2/5x+4)

Answers

Answer:

x + 3

Step-by-step explanation:

Use the distributive property, then collect like terms

(1/2)(3/5 x) + (1/2)(-8) + (7/4)(2/5 x) + (7/4)(4)

3/10 x - 4 + 7/10 x + 7

x + 3

Which of the following are steps to use when formulating an equation? Check all that apply. A. Make a table

B. Read the problem

C. Write each fact as a variable expression

D. Write each fact as a sentence

Answers

Answer:A , C , D

Step-by-step explanation:I just did it and those were the answers

Answer:

A and B

Step-by-step explanation:

How much of the Fraction 3 over 8 is in the Fraction 1 over 4?

Answers

Answer:

Step-by-step explanation:

3/8 = 2/8,1/4

The coordinates for the vertices of a polygon are (1, 4), (6, 4), and (6,1). What type of polygon is formed by these points?A) square
B) quadrilateral
C) right triangle
D) scalene triangle