3 years ago

Which of the following represents a statistical question

1 answer:

4 0

Note that all of these choices but the last have 1-number responses. The last choice involves collecting data: the ages of the concert attendees. So only the last pertains to statistics.

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Suppose that you measure a pen to be 10.6 cm long. Convert this to meters. Express the length in meters to three significant fig

Travka [436]

Use dimensional analysis:

$\frac{10.6cm}{1}*\frac{1m}{100cm}=0.106m$

Since we multiplied a numerator and a denominator by centimeters, we are only left with meters.

This answer is already is three significant figures by default.

7 0

3 years ago

Anna is a teacher at an elementary school. She purchased 73 tickets to take the first-grade children and some parents on a field

Svetllana [295]

She bought 54 child tickets and 19 adult tickets.

Step-by-step explanation:

No. of tickets purchased = 73

Cost of tickets = $771

Cost of one child ticket = $9

Cost of one adult ticket = $15

Let,

Child ticket = x

Adult ticket = y

According to given statement;

x+y=73 Eqn 1

9x+15y=771 Eqn 2

Multiplying Eqn 1 by 9;

$9(x+y=73)\\9x+9y=657\ \ \ Eqn\ 3\\$

Subtracting Eqn 3 from Eqn 2;

$(9x+15y)-(9x+9y)=771-657\\9x+15y-9x-9y=114\\6y=114\\$

Dividing both sides by 6;

$\frac{6y}{6}=\frac{114}{6}\\y=19$

Putting y=19 in Eqn 1

$x+19=73\\x=73-19\\x=54\\$

She bought 54 child tickets and 19 adult tickets.

Keywords: linear equations, subtraction

Learn more about linear equations at:

#LearnwithBrainly

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3 years ago

which uppercase letters will not appear reversed when they are held in front of a mirror? what type of symmetry do these letters

Irina-Kira [14]

A,H,I,M,O,T,U,V,W,X,Y --- these have vertical symmetry

a word whose reflection is also a word....YAM and MAY

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4 years ago

Explain symmetry property

Zigmanuir [339]

Answer:

This property states that if a = b, then b = a.

Step-by-step explanation:

That is, we can interchange the sides of an equation and the equation could still be true

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3 years ago

What is the value of the expression 6+18 % 3x4

natka813 [3]

You tell me buddy :)

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4 years ago