2 years ago

1.Which answer below represents the

Mathematics

1 answer:

Oksana_A [137]2 years ago

5 0

I think B because you would have to divide by 5 to get y by itself.

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A company buys pens at the rate of $5.50 per box for the first 10 boxes, $4.50 per box for the next 10 boxes, and $3.50 per box

marusya05 [52]

So it is really easy to solve firstly we can see how much does the first 10 boxes make which makes around 55$ obviously. Secondly 45$ for the next 10 boxes.

So for now we can simply calculate that we have spent around 100$ which means 20 boxes. The remaining money left is 77$ so we can buy 77/3.5 = 22 only 22 boxes with that money. Hence a total of 42 boxes.

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3 years ago

Which linear inequality is represented by the graph?

monitta

Answer:

Step-by-step explanation:

The correct answer is D

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2 years ago

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IrinaVladis [17]

Answer:

the answer of the question is C because 1/2=.5

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3 years ago

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Help me find Sample variance and standard deviation

AnnZ [28]

First, find the mean. You'll need it to compute the variance.

$\bar x=\displaystyle\frac15\sum_{i=1}^5x_i=\dfrac{21+10+6+7+11}5=11$

The variance of the sample is then computed with the formula

$s^2=\displaystyle\dfrac1{5-1}\sum_{i=1}^5(\bar x-x_i)^2=\dfrac{(21-11)^2+\cdots+(11-11)^2}4=\dfrac{71}2=35.5$

The standard deviation is the square root of the variance, so

$s=\sqrt{35.5}\approx5.958$

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3 years ago

No Links plz<br> help plzz<br> (0000.7x4x6+8to the power of 2)x(16x 8 to the power of 8x5+2)

valentina_108 [34]

Answer:

80.8

Step-by-step explanation: 0.7x4x6=16.8

16.8+8 to the 2nd power= 80.8

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2 years ago