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2 years ago

5

Carmen has 18 connecting cubes. she wants to model a house shaped like a rectangle. if the model has a height of one connecting

cube, how many different ways can Carmen model the house using all 18 connecting cubes and more and none of the models show the same side lenghts?

1 answer:

olganol [36]2 years ago

8 0

Om i think that it is going to be 8 by 8 sq ft

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Someone can you please help me on number 74

lisabon 2012 [21]

Answer:

9t^3 +t^2

Step-by-step explanation:

The perimeter of the figure is the sum of the lengths of the sides. The side lengths are represented by the polynomials shown, so the perimeter (P) is their sum:

P = (4t^3 -5) + (4t^3 -5) + (t^2 +9) + (t^3 -t^2 -11) + (t^2 +12)

Rearranging to group like terms:

P = (4t^3 +4t^3 +t^3) + (t^2 -t^2 +t^2) + (-5 -5 +9 -11 +12)

P = 9t^3 +t^2

The perimeter of the figure is represented by the polynomial 9t^3 +t^2.

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3 years ago

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A line and the point (3,4) are graphed in the coordinate plane. what is the equation of the line that passes through the point (

oksano4ka [1.4K]

Answer:

B. y=1/4x+13/4

Step-by-step explanation:

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2 years ago

1. Ima Thief robs a bank and takes off in a getaway car. Five minutes Polly Srule takes off after Ima.

Amanda [17]

Answer:

A

Step-by-step explanation:

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3 years ago

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Galina-37 [17]

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3 years ago

A survey of 80 randomly selected companies asked them to report the annual income of their presidents. Assuming that incomes are

Artyom0805 [142]

Answer:

The 90% confidence interval estimate of the mean annual income of all company presidents is ($579,545, $590,580).

Step-by-step explanation:

The information provided is:

$n=80\\\sigma=30,000\\\bar x=585062.50\\\text{Confidence level} = 90\%$

The critical value of <em>z</em> for 90% confidence level is, 1.645.

Compute the 90% confidence interval estimate of the mean annual income of all company presidents as follows:

$CI=\bar x\pm z_{\alpha/2}\cdot\frac{\sigma}{\sqrt{n}}\\\\=585062.50\pm 1.645\times\frac{30000}{\sqrt{80}}\\\\=585062.50\pm5517.50\\\\=(579545, 590580)$

Thus, the 90% confidence interval estimate of the mean annual income of all company presidents is ($579,545, $590,580).

This interval implies that there is 90% probability that the true mean annual income of all company presidents is within this interval.

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2 years ago