Simplify the expression 13(2x)

A 20-pack of Dr. Pepper cost $5.50 and a 6-pack cost $1.50. Which is the better deal?

Irina-Kira [14]

Answer:

Step-by-step explanation:

20-pack of Dr. Pepper cost $5.50 . As per this deal

Cost of one pack = 5.5/20 = $ 0.275

a 6-pack cost $1.50.As per this deal

Cost of one pack = 1.50/6 = $ 0.25

A 6-pack cost $1.50 is the better deal.

5 0

2 years ago

Solve the following system by any method -8x-8y=0 -8x+2y=-20

iVinArrow [24]

$\fbox{Solution by using Matrix}$

$\text{Linear Equation} = -8x-8y=0 , -8x+2y=-20$

$\text{Rewrite the linear equations above as a matrix}$

$\left[\begin{array}{ccc}8&-8&0\\-8&2&-20\\\end{array}\right]$

$\text{Apply to Row2 : Row2 + Row1}$

$\left[\begin{array}{ccc}8&-8&0\\-8&-6&-20\\\end{array}\right]$

$\text{ Simplify rows}$

$\left[\begin{array}{ccc}8&-8&0\\0&1&10/3\\\end{array}\right]$

$\text{Note: The matrix is now in echelon form.}$ $\text{The steps below are for back substitution.}$

$\text{Apply to Row1 : Row1 + 8 Row2}$

$\left[\begin{array}{ccc}8&0&80/30\\0&1&10/3\\\end{array}\right]$

$\text{ Simplify rows}$

$\left[\begin{array}{ccc}1&0&10/3\\0&1&10/3\\\end{array}\right]$

$\text{Therefore, the solution is}$

$x= \dfrac{10}{3} \ \text{and} \ \ y=\dfrac{10}{3}$

7 0

2 years ago

Solve the equation for all values of x by completing the square. 3x^2+177= -48x

GaryK [48]

Use the formula

(

b

2

)

2

in order to create a new term. Solve for

x

by using this term to complete the square.

Exact Form:

x

=

±

√

5

−

8

Decimal Form:

x

=

−

5.76393202

…

,

−

10.23606797

4 0

2 years ago

2.1 liters of coffee were equally distributed to 30 cups how many millimeters of coffee were in each cup

sattari [20]

Answer: 70 ml of coffee in each cup

Step-by-step explanation:

1 liter = 1000 ml

Amount of coffee given = 2.1 liters

$\Rightarrow$ 2.1 liters = 2.1 * 1000 = 2100 ml

Total number of cups = 30

$\therefore$ Amount of coffee in each cup = $\frac{Total\ amount \ of \ coffee}{number\ of \ cups}$ = $\frac{2100}{30}$ =70

∵ Amount of coffee in each cup = 70 milliliters

4 0

2 years ago

Read 2 more answers

Help me pretty pls :)

Zarrin [17]

APC your welcome mark me brainliest please

8 0

2 years ago