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3 years ago

What kind of dimension does a point have?

Mathematics

2 answers:

Crazy boy [7]3 years ago

8 0

Should be zero, I believe.

marissa [1.9K]3 years ago

5 0

Step-by-step explanation:

in math its assured to have zero

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Which equation represents the line through (-8, 10) and (3, 7) in point-slope form?

alina1380 [7]

-3/11

Step-by-step explanation:

7-10/3-(-8)

7-10/3+8

7 0

3 years ago

What is the solution to this system of linear equations?

Luden [163]

Answer:

the answer is (5,-1)

Step-by-step explanation:

if you click on the image it will show you the image full screen

4 0

2 years ago

Read 2 more answers

Finding the inverse of y=(x+3)^2

Julli [10]

Answer:

(sqrt)x -3=y

Step-by-step explanation:

x=(y+3)^2

$\sqrt{x}$ = $\sqrt{(y+3)^{2}$

$\sqrt{x}$ =y+3

$\sqrt{x}$ -3=y

8 0

3 years ago

PLEASE HELP ME I BEG I WILL GIVE BRAINLIEST

ohaa [14]

Answer:

Mean = (2.2 + 2.4 + 2.5 + 2.5 + 2.6 + 2.7)/6 = 2.48

Standard deviation = √(summation(x - mean)²/n

n = 6

Summation(x - mean)² = (2.2 - 2.48)^2 + (2.4 - 2.48)^2 + (2.5 - 2.48)^2 + (2.5 - 2.48)^2 + (2.6 - 2.48)^2 + (2.7 - 2.48)^2 = 0.1484

Standard deviation = √(0.1484/6

s = 0.16

Standard error = s/√n = 0.16/√6 = 0.065

Part B

Confidence interval is written as sample mean ± margin of error

Margin of error = z × s/√n

Since sample size is small and population standard deviation is unknown, z for 98% confidence level would be the t score from the student t distribution table. Degree of freedom = n - 1 = 6 - 1 = 5

Therefore, z = 3.365

Margin of error = 3.365 × 0.16/√6 = 0.22

Confidence interval is 2.48 ± 0.22

Part C

We would set up the hypothesis test. This is a test of a single population mean since we are dealing with mean

For the null hypothesis,

H0: µ = 2.3

For the alternative hypothesis,

H1: µ > 2.3

This is a right tailed test

Since the number of samples is small and no population standard deviation is given, the distribution is a student's t.

Since n = 6

Degrees of freedom, df = n - 1 = 6 - 1 = 5

t = (x - µ)/(s/√n)

Where

x = sample mean = 2.48

µ = population mean = 2.3

s = samples standard deviation = 0.16

t = (2.48 - 2.3)/(0.16/√6) = 2.76

We would determine the p value using the t test calculator. It becomes

p = 0.02

Assuming significance level, alpha = 0.05.

Since alpha, 0.05 > than the p value, 0.02, then we would reject the null hypothesis. Therefore, At a 5% level of significance, the sample data showed significant evidence that the mean absolute refractory period for all mice when subjected to the same treatment increased.

Step-by-step explanation:

7 0

3 years ago

Katrina goes to Road Runner after school and purchases a soda for 1.50, chips for 3.50 and a candy bat for 0.50 An additional 8%

Nutka1998 [239]

Answer:

Sale tax paid by Katrina is 0.44 units of currency and total amount paid is 5.94 unit of currency.

Solution:

Given that Katrina goes to road runner after school and purchase following three products

A soda for 1.50

Chips for 3.50

Candy for 0.50

Also she pays 8% sales tax.

Need to determine amount paid in sales tax and total amount paid by Katrina.

lets first calculate amount she paid without taxes.

Total paid amount without taxes = 1.50 + 3.50 + 0.50 = 5.50

As she paid 8% sale tax , that is 8 % of 5.50

so sale tax paid = $\frac{8}{100} \times 5.50 = 0.44$

Total amount paid = Total amount paid without taxes + tax paid

= 5.50 + 0.44 = 5.94

Hence sale tax paid by Katrina is 0.44 units of currency and total amount paid is 5.94 unit of currency.

7 0

3 years ago