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Digiron [165]
3 years ago
7

I need the find the area of a rectangle. the length is 6.5x + 5ft and the width is 15 ft

Mathematics
1 answer:
Paha777 [63]3 years ago
3 0

Answer:

Area= l+b) ×2

6.5x+5ft +5ft

13x+20ft

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graph the image of this figure after a dilation with a scale factor of 2 centered at the origin use the polygon tool to graph t
Iteru [2.4K]

Answer:

For this answer, I will label the points. Starting at the top left, then top right, then bottom left and bottom right let the points be A, B, C, D.

The new coordinates will be

A(-4,10)

B(4,10)

C(-4,4)

D(4,4)

Step-by-step explanation:

The question is asking for a dilation which is a transformation that makes an image proportionately smaller or larger by a scale factor. The scale factor is how much smaller or larger the shape will be, if the scale factor is between 0 and 1 then it will shrink, if it is greater than one then the image will stretch (be larger). In this case, the scale factor is 2, therefore the image will stretch. Since the center of dilation is the origin, to find the new coordinates simply multiply each x and y value by the scale factor. So A's original coordinates (-2,5) become (-4,10) and so forth. Therefore the equation for this dilation is (x, y) → (2x,2y).

4 0
3 years ago
Read 2 more answers
A group of statistics students decided to conduct a survey at their university to find the average (mean) amount of time student
Butoxors [25]

Answer: (21.541,\ 23.059)

Step-by-step explanation:

The confidence interval for population mean is given by :-

\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}

Given : Sample size : n=240 , which is a large sample , so we apply z-test .

Sample mean : \overline{x}=22.3

Standard deviation : \sigma= 6

Significance level : \alpha=1-0.95=0.05

Critical value : z_{\alpha/2}=1.960

Now, a confidence interval at the 95% level of confidence will be :-

22.3\pm(1.960)\dfrac{6}{\sqrt{240}}\\\\\approx22.3\pm0.759\\\\=(22.3-0.759,\ 22.3+0.759)\\\\=(21.541,\ 23.059)

7 0
3 years ago
Will give the brains of me brains and my brains and maby ur brain to u how many brains can i give u if u ask this quetion right?
kogti [31]

Answer: 1.6

Step-by-step explanation:

This data set is 0,1,2,2,3.  Thus, you can calculate the mean by doing (0+1+2+2+3)/5=1.6

Hope it helps <3

6 0
3 years ago
Read 2 more answers
Someone help plz
Lilit [14]
Hope this helps !!!!

7 0
3 years ago
I F 49x ²b = (7x +1/2)(7x-1/2)<br>then Find the value b.​
Marina86 [1]

Answer:

0

Step-by-step explanation:

Apply Only the Outside and Inside Method of the Foil Method.

7 \times  -  \frac{1}{2}  =  - 3.5x

\frac{1}{2}  \times 7x = 3.5x

Add them together

- 3.5x + 3.5x = 0

So our b value is 0.

4 0
3 years ago
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