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2 years ago

Plsss help me ill give brainly

Mathematics

2 answers:

valentinak56 [21]2 years ago

5 0

Answer:

C. pentagon

Step-by-step explanation:

Since it has 5 points, it is most likely a pentagon.

nikdorinn [45]2 years ago

4 0

Answer:

B. Pentagon

Step-by-step explanation:

This is basically a mathematical version of connect the dots! You have to find each point and connect it with the next. If you find the dot that marks (1, 7) and connect it to (4, 8) and so on, you will find that the five points connect to make a pentagon (which is a five-sided shape).

I hope this helps! :) have a good day!

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In a mathematics class, half of the students scored 87 on an achievement test. With the exception of a few students who scored 5

Arisa [49]

Answer:the mean is greater than the median

Step-by-step explanation:

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3 years ago

What is the x-intercept and the y-intercept of the graph of 6x - 12y = 36? Please explain your answer in full sentences.

Citrus2011 [14]

Answer:

Sentence Fram: I found x-intercept by substitute y by 0 and I found y-intercept by substitute x by 0

x-intercept = (6, 0), y-intercept = (0, -3) ⇒ C

Step-by-step explanation:

To find the x-intercept of a line, equate y in its equation by 0

To find the y-intercept of a line, equate x in its equation by 0

∵ The equation of the graph is 6x - 12y = 36

→ Equate y by 0 to find x

∵ y = 0

∴ 6x - 12(0) = 36

∴ 6x - 0 = 36

∴ 6x = 36

→ Divide both sides by 6 to find x

∴ x = 6

∴ The x-intercept = (6, 0)

→ Equate x by 0 to find y

∵ x = 0

∴ 6(0) - 12y = 36

∴ 0 - 12y = 36

∴ -12y = 36

→ Divide both sides by -12 to find y

∴ y = -3

∴ The y-intercept = (0, -3)

∴ Sentence Fram: I found x-intercept by substitute y by 0 and I found

y-intercept by substitute x by 0

∴ x-intercept = (6, 0), y-intercept = (0, -3)

7 0

3 years ago

A sample of 2,500 people was asked how many cups of coffee they drink in the morning. You are given the following sample informa

Misha Larkins [42]

Answer: V(X) = 0.96

Step-by-step explanation: <u>Variance</u> is defined as the average of the squared difference from the sample or population mean.

For a discrete frequency distribution is calculated following the steps:

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$E(X)=\frac{\Sigma xf}{\Sigma f}$

$E(X)=\frac{0(700)+1(900)+2(600)+3(300)}{2500}$

E(X) = 1.2

2) Multiply frequency and the squared difference of x and expected value:

$f(x-E(X))^{2}$

$700(0-1.2)^{2}=1008\\900(1-1.2)^{2} = 36\\600(2-1.2)^{2} = 384\\300(3-1.2)^{2} = 972$

3) Add them:

$\Sigma [f(x-E(X))^{2}]$ = 1008 + 36 + 384 + 972 = 2400

4) Divide the sum per frequency total:

$V(X)=\frac{\Sigma [f(x-E(X))^{2}]}{\Sigma f}$

$V(X)=\frac{2400}{2500}$

V(X) = 0.96

The variance of the number of cups of coffee is <u>0.96</u>.

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3 years ago

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sladkih [1.3K]

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3 years ago