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3 years ago

20. Which student's score was closest to

Mathematics

2 answers:

VARVARA [1.3K]3 years ago

5 0

Answer:

Step-by-step explanation:

<u>Comparing the difference with the average in absolute value </u>

3, 4, 2, 5, 7

The smallest number is 2 indicating the closest to average score

Matching student is C

user100 [1]3 years ago

3 0

Student c was close to average

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Luc randomly selected 40 students and asked them whether they had ever gone snowboarding. He repeated this survey using the same

anygoal [31]

<span>C. No, because although the results differ among the four surveys, the sample method used for all was the same. Luc RANDOMLY selects 40 students in every survey. Random selection in surveys do not create bias and the results are highly credible. This is because there are no preconceived notions or factors that affect the responses of people being surveyed.</span>

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3 years ago

Solve for x.<br><br> (x−2)^2+2=38<br><br> x= ___ or x= ___

Elan Coil [88]

Answer:

$x \: = \: \boxed{ \bold{ - 4 }}\: \: \text{or} \: \: x \: = \: \boxed{ \bold{ 8}}$

Step-by-step explanation:

$(x \: - \: 2 {)}^{2} \: + \: 2 \: = \: 38$

${x}^{2} \: - \: 4x \: + \: 4 \: + \: 2 \: = \: 38$

${x}^{2} \: - \: 4x \: + \: 6 \: = \: 38$

${x}^{2} \: - \: 4x \: + \: 6 \: - \: 38 \: = \: 0$

${x}^{2} \: + \: 4x \: - \: 8x \: - \: 32 \: = \: 0$

$x \: \times \: (x \: + \: 4) \: - \: 8(x \: + \: 4) \: = \: 0$

$(x \: + \: 4) \: \times \: (x \: - \: 8) \: = \: 0$

When it happens that the product of the factors is the same as zero. It is divided into two possible cases.

$x \: + \: 4 \: = \: 0 \\ x \: - \: 8 \: = \: 0$

We solve the two equations:

$x \: = \: - 4 \\ x \: = \: 8$

<h2>Answer: </h2>

$x \: = \: - 4 \\ x \: = \: 8$

<h3><em><u>MissSpanish</u></em></h3>

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2 years ago

The notation y = f(x) is called _______ notation.

Elis [28]

Answer:

Function notation

Step-by-step explanation:

y=f(x) is in function notation

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3 years ago

Chaz's new game room is shaped like a cube. It measures 15 feet across. If he wants to paint only the walls of the room, what is

dezoksy [38]

<u>The surface area of the region he will paint is 900 sq.ft.</u>

<u>Step-by-step explanation:</u>

Cubical room measures - 15 ft

Chaz want to paint only the walls of room

Surface of painting region means Lateral surface area (excluding top and bottom)

Lateral surface area of cube = $4a^2$

⇒ 4 * 15 *15

⇒ 900 sq.ft

<u> The surface area of the region he will paint is 900 sq.ft.</u>

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2 years ago

What is the mean for the data set

Andrew [12]

First you would need to add up all of the data given, then divide the sum by 9 because there is 9 pieces of data. So it would be 229/9=25.4444444 repeating.

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3 years ago

Read 2 more answers