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2 years ago

One bag of 25 diapers costs $3.99. A box of 89 diapers $18.99. Which is the

Mathematics

1 answer:

Vera_Pavlovna [14]2 years ago

5 0

The 25 box is a better deal:

The 25 box is about $0.16 per diaper and the 89 is about $0.21/d.

Hope this helps!

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the mean height of the 30 children in a room is 76 cm james whose height is 107 cm went into the room what is the new mean of th

Snezhnost [94]

Answer:

The new mean is 77cm

Step-by-step explanation:

If the mean height of the 30 children in a room is 76 cm, then the sum of their ages is

$30 \times 76 = 2280cm$

If James with height 107cm joins them, then the total number of children now becomes 30+1=31 and the total height becomes: 2280cm+107cm=2387cm

The new mean now becomes:

$\bar x = \frac{2387}{31} = 77cm$

4 0

2 years ago

Which of the following prove that (-9)(4) = -36?

Luba_88 [7]

Answer:

C If I lost 9 pounds every month for 4 months in a row, then I lost 36 pounds.

Step-by-step explanation:

4 0

2 years ago

If a storm window is 315 square inches, what are the dimensions if the window is 6 inches higher than it is wide

viva [34]

$\bf \textit{area of a rectangle}\\\\ A=Lw~~ \begin{cases} L=length\\ w=width\\[-0.5em] \hrulefill\\ L=\stackrel{\textit{6 more than \underline{w}}}{w+6}\\ A=315 \end{cases}\implies 315=(w+6)(w) \\\\\\ 315=w^2+6w\implies 0=w^2+6w-315 \\\\\\ (w+21)(w-15)=0\implies w= \begin{cases} -21\\ \boxed{15} \end{cases} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill w=15\qquad \stackrel{w+6}{L=21}~\hfill$

3 0

2 years ago

|−12| = 12 True or False please help!!!!!

Alexandra [31]

Answer:

yes

Step-by-step explanation:

|-12| = |12| they always equal to 12

4 0

2 years ago

Read 2 more answers

What is the solution to the system of equations below?

Pachacha [2.7K]

Answer:

(-8, 2)

Step-by-step explanation:

set these equations equal to each other

1/2x + 6 = -3/4x -4

5/4 x = -10

x = -10x4/5 = -40/5 = -8

plug this x into one of the equations

y = 1/2 (-8) + 6

y = -4 + 6

y = 2

6 0

2 years ago