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Deffense [45]
3 years ago
5

A polnt represents:

Mathematics
1 answer:
Allushta [10]3 years ago
5 0

A point represents a location. A coordinate on a plane .

The intersection of two planes is a line.

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A rectangular block of land is 6 m long and 3 m wide. A fence is to be constructed around the perimeter. What is the length of t
Alinara [238K]

Answer:

18

Step-by-step explanation:

6+6+3+3=18

Please Brainliest!!!

5 0
3 years ago
Triangle MNO is similar to triangle MꞌNꞌOꞌ. Segment MN is 2 units and segment MꞌNꞌ is 8 units. Which scale factor was used to di
Over [174]
In getting the scale factor, use the formula:
Scale factor = big / small
Scale factor = 8 / 2
Scale factor = 4 units
3 0
3 years ago
Read 2 more answers
Translate the phrase into a math expression.
sweet [91]

Answer:

Your answer would be C!

Step-by-step explanation:

Have a good day :D.

7 0
2 years ago
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I need to know how to do the whole thing and understand it.
patriot [66]

We are given the data on the number of candies handed by neighborhood A and neighborhood B.

Let us first find the mean and variance of each neighborhood.

Mean:

\bar{x}_A=\frac{\sum x}{N_1}=\frac{12}{6}=2\bar{x}_B=\frac{\sum x}{N_2}=\frac{20}{6}=3.33

Variance:

s_A^2=\frac{\sum x^2}{N_1}-\bar{x}_A^2=\frac{28}{6}-2^2=0.667s_B^2=\frac{\sum x^2}{N_2}-\bar{x}_B^2=\frac{80}{6}-3.33^2=2.244

A. Null hypothesis:

The null hypothesis is that there is no difference in the mean number of candies handed out by neighborhoods A and B.

H_0:\;\mu_A=\mu_B

Research hypothesis:

The research hypothesis is that the mean number of candies handed out by neighborhood A is more than neighborhood B.

H_a:\;\mu_A>\mu_B

Test statistic (t):

The test statistic of a two-sample t-test is given by

t=\frac{\bar{x}_A-\bar{x}_B}{s_p}

Where sp is the pooled standard deviation given by

\begin{gathered} s_p=\sqrt{\frac{N_1s_1^2+N_2s_2^2}{N_1+N_2-2}(\frac{N_1+N_2}{N_1\cdot N_2}}) \\ s_p=\sqrt{\frac{6\cdot0.667+6\cdot2.244}{6+6-2}(\frac{6+6}{6\cdot6})} \\ s_p=0.763 \end{gathered}t=\frac{2-3.33}{0.763}=-1.74

So, the test statistic is -1.74

Critical t:

Degree of freedom = N1 + N2 - 2 = 6+6-2 = 10

Level of significance = 0.05

The right-tailed critical value for α = 0.05 and df = 10 is found to be 1.81

Critical t = 1.81

We will reject the null hypothesis because the calculated t-value is less than the critical value.

Interpretation:

This means that we do not have enough evidence to conclude that neighborhood A gives out more candies than neighborhood B.

6 0
1 year ago
Given line segment RB and on it is point C, if RB = 45 and CB = 3x - 12 and RC = 2x + 9, what is the value of x?
Blababa [14]

Answer:

x = 9.6

Step-by-step explanation:

Since point C is on line segment RB.

Therefore,

RC + CB = RB

2x + 9 + 3x - 12 = 45

5x - 3 = 45

5x = 45 + 3

5x = 48

x = 48/5

x = 9.6

6 0
3 years ago
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