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notka56 [123]
4 years ago
14

Gary’s playing the role of the Greek god Zeus in a school play he carries a lightning bolt cut from plywood its dimensions are s

hown in the figure what is the area of the wooden cutout of the lightning bolt

Mathematics
2 answers:
Blizzard [7]4 years ago
6 0

Answer:

30 square inches

Step-by-step explanation:

photoshop1234 [79]4 years ago
3 0

As the figure is not attached, I have attached the figure using the link- https://cdn.ple.platoweb.com/EdAssets/6764fbd04e1f4014be049f2831fd4e8c?ts=635356393812430000

Answer:

Area is 30 square inches.

Step-by-step explanation:

Given:

The wooden cutout of the lightning bolt consists of 2 right angled triangles with the legs being 10 inches and 3 inches.

The area of this lightning bolt will be equal to the sum of the areas of the two right angled triangles.

The area of a triangle of base 'b' and height 'h' is given as:

A=\frac{1}{2}bh

Here, b=3, h=10. Plug in solve for area of one of the triangles.

Therefore, area of the right angled triangle is:

A=\frac{1}{2}\times 3\times 10=\frac{30}{2}=15\ in^2

Now, the two right angled triangles are congruent. So, total area is twice the area of one of the triangle.

Therefore, total area of the lightning bolt is 2\times 15 = 30 in².

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There are 130 tickets. 30 of these tickets are worth $5 or $ 10. Therefore, 30 of these 130 tickets are worth $5 or greater. Simplying 30 / 130 gives the probability of 3 / 13 or roughly 23%.
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3 years ago
The average fine for entering a national Forest wilderness without a permit increased from $65 to $78. What rate of increase is
Alik [6]

20%

A change from 65 to 78 represents a positive change (increase) of 20%

Use the formula found below to find the percent change by replacing the given values:

Percent change = [(New - Old ) / |Old|] x 100%


5 0
3 years ago
Read 2 more answers
Last year, the average monthly revenue at stamford times newspaper was 35,700. So far this year, the average has been 29% more t
monitta

Answer:

$46,053

Step-by-step explanation:

  1. Convert 29% into a decimal, which is 0.29.
  2. Multiply $35,700 by 29% as a decimal (0.29), which is 10,353.
  3. Since the keyword is more, we want to add $35,700 and 10,353 (29% of $35,700). The answer will be $46,053.
6 0
3 years ago
Find a 90% confidence interval for the mean of all tree ring dates from this archaeological site. (round your answers to the nea
creativ13 [48]
Given a table below which gives the years in A.D. for an archaeological excavation site using the method of tree ring dating:

\begin{tabular}
{|c|c|c|c|c|c|c|c|c|}
1229&1292&1187&1257&1268&1316&1275& 1317&1275
\end{tabular}

Part A:

The sample mean is given by:

\bar{x}= \frac{1229+1292+1187+1257+1268+1316+1275+ 1317+1275}{9} \\  \\  = \frac{11416}{9} =1268

Therefore, the sample mean is 1268.



Part B:

We calculate the sample standard deviation as follows:

s= \frac{1}{9-1} \left(\sqrt{(1229-1268)^2+(1292-1268)^2+(1187-1268)^2+(1257-1268)^2+(1268-1268)^2+(1316-1268)^2+(1275-1268)^2+(1317-1268)^2+(1275-1268)^2}\right)\\ \\ = \frac{1}{8}\left(\sqrt{(-39)^2+24^2+(-81)^2+(-11)^2+0^2+48^2+7^2+49^2+7^2}\right)\\ \\ = \frac{1}{8}\left(\sqrt{1521+576+6561+121+2304+49+2401+49}\right)\\ \\ = \frac{1}{8}\left(\sqrt{13,582}\right)\\ \\ = \frac{1}{8}(116.54)=14.57\approx15



Part C:

The 90% confidence interval is given by:

90\% \ C. \ I.=1268\pm1.65\left(\frac{15}{\sqrt{9}}\right) \\  \\ =1268\pm\left(\frac{15}{3}\right)=1268\pm5 \\  \\ =(1268-5, \ 1268+5)=(1263, \ 1273)
8 0
3 years ago
Solve x^2=23. Use a radical sign in each answer.
NeTakaya

work shown in image.

3 0
3 years ago
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