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aleksley [76]
3 years ago
13

Y = 3x + 2 -4x + 2y = 8

Mathematics
1 answer:
Sergio [31]3 years ago
4 0

Answer: x=2 and y=8

Step-by-step explanation:see attachment

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A small moving box has a volume of 2304 inches cubed and length of 16 inches. The box's width and height are the same. Write the
lisabon 2012 [21]

Answer:

<em>V = 16x² </em>

<em>Width = 12in</em>

<em>Height = 12in</em>

Step-by-step explanation:

Volume of the box is expressed as;

V = Length *Width * height

Given

Length = 16in

Width = x

Height = x

The volume of the box will be expressed as;

V = 16 * x * x

<em>V = 16x² (This gives the required equation)</em>

To get x:

We are given

V = 2304in³

Substitute;

2304 = 16x²

x² = 2304/16

x² = 144

x= √144

x = 12

<em>Hence the width and the height are both 12inches since they are the same.</em>

<em></em>

For the sma

8 0
3 years ago
Need help on these problems
kupik [55]
Simple Interest = Principal * Interest Rate * Term
Total Amount = Principal + Simple Interest

<span> <span> </span><span><span> #   Principal      Interest rate   term     Interest     Total balance
</span><span> 1 <span>         100.00         </span>6%             1 <span>           6.00 </span> <span>         106.00
</span></span><span> 3 <span>         100.00         </span>6%             2 <span>         12.00 </span> <span>         112.00
</span></span><span> 5 <span>         100.00         </span>6%             3 <span>         18.00 </span> <span>         118.00
</span></span><span> 7 <span>         100.00         </span>6%             4 <span>         24.00 </span> <span>         124.00
</span></span><span> 9 <span>      3,000.00         </span>5%             3 <span>      450.00 </span> <span>      3,450.00
</span></span><span>10 <span>     4,000.00         </span>6%             3 <span>      720.00 </span> <span>      4,720.00
</span></span><span>11 <span>   10,000.00         </span>4%             3 <span>   1,200.00 </span> <span>    11,200.00
</span></span><span>13 <span>   10,000.00         </span>6%             4 <span>   2,400.00 </span> <span>   12,400.00
</span></span><span>14 <span>   10,000.00         </span>6%             5 <span>   3,000.00 </span> <span>   13,000.00 </span> </span></span></span>
5 0
2 years ago
The heights of baby giraffe are normally distributed with a mean of 63.6 inches and a standard deviation of 2.5 inches. If 100 b
ANEK [815]

Answer:

P(\bar X

And we can solve this using the following z score formula:

z = \frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}

And if we use this formula we got:

z = \frac{63-63.6}{\frac{2.5}{\sqrt{100}}}= -2.4

So we can find this probability equivalently like this:

P( Z

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the heights of a population, and for this case we know the distribution for X is given by:

X \sim N(63.6,2.5)  

Where \mu=63.6 and \sigma=2.5

We select n =100. Since the distribution for X is normal then we know that the distribution for the sample mean \bar X is given by:

\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})

We want this probability:

P(\bar X

And we can solve this using the following z score formula:

z = \frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}

And if we use this formula we got:

z = \frac{63-63.6}{\frac{2.5}{\sqrt{100}}}= -2.4

So we can find this probability equivalently like this:

P( Z

4 0
3 years ago
Lisa is seven times as old as her brother. She will be four times as old as her brother in three years. Represent the above situ
dlinn [17]

Answer:

3

Step-by-step explanation:

3 0
2 years ago
A parallelogram has a base of 12 meters and a height of 1.5 meters. What is its area? ​
rusak2 [61]

Answer:

18

Step-by-step explanation:

12×1.5=18

its the same formula with rectangle cz if you combine both right angled triangle side its become a rectangle

4 0
2 years ago
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