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Reil [10]
3 years ago
11

Sales tax she paid I . L . N 2-

Mathematics
1 answer:
goldenfox [79]3 years ago
4 0
Rounded it equals $30. It was really like $29.83 :)
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Find the lateral surface area of the prism below in square yards. ​
denis-greek [22]

Answer:

Step-by-step explanation:

Answer: 14*2 * 3

=> 6 * 14

<h2>=> 84</h2><h2></h2><h2>Please mark as brainliest for further answers :)</h2>
7 0
2 years ago
6.4 round too nearest whole number one
vladimir1956 [14]
6.4 rounded to the nearest whole number is 6
3 0
3 years ago
Read 2 more answers
If an open box has a square base and a volume of 115 in.3 and is constructed from a tin sheet, find the dimensions of the box, a
Karolina [17]
Let h = height of the box,
x = side length of the base.

Volume of the box is  V=x^{2} h = 115. 
So h = \frac{115}{ x^{2} }

Surface area of a box is S = 2(Width • Length + Length • Height + Height • Width).
So surface area of the box is
S = 2( x^{2}  + hx + hx)  \\ = 2 x^{2}  + 4hx  \\  = 2 x^{2}  + 4( \frac{115}{ x^{2} } )x
= 2 x^{2} + \frac{460}{x}
The surface are is supposed to be the minimum. So we'll need to find the first derivative of the surface area function and set it to zero.

S' = 4x- \frac{460}{ x^{2} }  = 0
4x = \frac{460}{ x^{2} }  \\  4x^{3} = 460  \\ x^{3} = 115  \\ x =  \sqrt[3]{115} = 4.86
Then h=  \frac{115}{4.86^{2}} = 4.87
So the box is 4.86 in. wide and 4.87 in. high. 

5 0
3 years ago
Read 2 more answers
The diameter of the moon is about 3500 km. Approximate the surface area of the moon using the formula for the surface area of a
horrorfan [7]

Answer:

3.8465 *10^7 square kilometers

Step-by-step explanation:

The surface area of a sphere can be found using the formula SA=4\pi r^2. Since the diameter is 3500 km then its radius is half of this. 3500 divided in two is 1,750 units. Substitute r=1,750.

SA=4\pi r^2\\SA = 4 \pi (1750)^2\\SA = 4 \pi *3,062,500\\SA =38,465,000

The surface area of the moon is about 38,465,000 square kilometers. Write this is scientific notation using base. 3.8465 *10^7

5 0
2 years ago
Please help!!<br> i will mark as brainliest
Viktor [21]

Step-by-step explanation:

okay

I think you should use the method of tan 30

and then find x by using pythagorean theorem

4 0
3 years ago
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