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3 years ago

A store sells a twelve pack of markers for $20. How much does it cost for one marker?

Mathematics

2 answers:

Elenna [48]3 years ago

7 0

Answer:

$1.67

Step-by-step explanation:

Take the total cost and divide by the number of markers

$20/12 =1.6666666

Since we are dealing with money we round to the nearest cent

$1.67

nlexa [21]3 years ago

5 0

Answer:

The cost of one marker is$1.67

Step-by-step explanation:

$20/12=1.666667

1.666667 is rounded to $1.67 because we are working with money.

That is why $20 divided by 12 is $1.67.

You might be interested in

Set up an equation and use it to solve for X<br> (6x + 3)<br> 33°

Elodia [21]

9514 1404 393

Answer:

Step-by-step explanation:

The angles of a linear pair are supplementary.

(6x +3)° +33° = 180°

6x = 144 . . . . . . . . . . . divide by °, subtract 36

x = 24 . . . . . . . . divide by 6

7 0

3 years ago

Given: <SPT = <RQT, ST = RT Prove: PR = QS

andrey2020 [161]

Answer:

See explanation

Step-by-step explanation:

Consider triangles PTS and QTR. In these triangles,

$ST=RT$ - given;
$\angle SPT=\angle RQT$ - given;
$\angle STP=\angle RTQ$ - as vertical angles when lines PR and SQ intersect.

Thus, $\triangle PTS\cong \triangle QTR$ by AAS postulate.

Congruent triangles have congruent corresponding sides, so

$PT=QT$

Consider segments PR and QS:

$PR=PT+TR\ [\text{Segment addition postulate}]\\ \\QS=QT+TS\ [\text{Segment addition postulate}]\\ \\PT=QT\ [\text{Proven}]\\ \\ST=RT\ [\text{Given}]$

So,

$PR=SQ\ [\text{Substitution property}]$

7 0

3 years ago

Trevor solved the system of equations below. What mistake did he make in his work? 2x + y = 5 x − 2y = 10 y = 5 − 2x x − 2(5 − 2

Arturiano [62]

$2x+y=5 \\
x-2y=10 \\ \\
y=5-2x \\
x-2(5-2x)=10 \\
x-10+4x=10 \\
5x-10=10 \\
\boxed{5x=0} \Leftarrow \hbox{the mistake, it should be 5x=20} \\
x=0 \\ \\
2(0)+y=5 \\
y=5$

If 2x+y=5, then y=5-2x, so he substituted 5-2x correctly.
x+4x=5x, so he combined like terms correctly.
If 5x-10=10, then 5x=10+10 -> 5x=20, so he subtracted 10 from the right side instead of adding 10 to the right side.

The answer is C.

Here's the correct solution:
$2x+y=5 \\
x-2y=10 \\ \\
y=5-2x \\
x-2(5-2x)=10 \\
x-10+4x=10 \\
5x-10=10 \\
5x=10+10 \\
5x=20 \\
x=\frac{20}{5} \\
x=4 \\ \\
y=5-2x \\
y=5 - 2 \times 4 \\
y=5-8 \\
y=-3 \\ \\
(x,y)=(4,-3)$

5 0

3 years ago

Use a graphing calculator to determine the linear, quadratic, or exponential equation that best represents the data. For linear

Sav [38]

The linear equation that best represents the data is given by:

y = 1.35x - 2.11.

<h3>Why is the data best represented by a linear equation?</h3>

We have to consider two things:

The data increases over the entire interval, not having changes in the behavior related to increasing/decreasing, hence a quadratic equation would not be a good representation for the data.

The increase is best followed by a constant, especially for higher values, and not by a multiplier, hence a linear function is selected over an exponential function.

<h3>How to find the equation of linear regression using a calculator?</h3>

To find the equation, we need to insert the points (x,y) in the calculator.

For this problem, the points are given as follows:

(1, 0.2), (2, 0.4), (3, 1.1), (4, 2.3), (5, 5.1), (6, 6.3), (7, 7.5).

Inserting these points into the calculator, the equation is given by:

y = 1.35x - 2.11.

More can be learned about linear equations at brainly.com/question/24808124

#SPJ1

3 0

1 year ago

Solve: 7+42*3^(2-3a)=14*3^-2a+7<br> A=-3<br> a=0<br> a=3<br> a=no solution

bekas [8.4K]

Answer:C

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers