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mrs_skeptik [129]
2 years ago
9

Find the surface area of composite figure. use 3.14 for π. round to the nearest tenth

Mathematics
1 answer:
777dan777 [17]2 years ago
3 0

Answer:

334 in^2.

Step-by-step explanation:

The surface area = area of the top prism + area of the bottom - 2 * area of the base of the  top smaller prism

= 2(5*3 + 5*3 + 3*3) + 2(9*7 + 9*5 + 7*5) -  2* 3*5

= 2* 39 + 2*143 - 30

= 334

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Which relationship is always true for the angles r, x, y, and z of triangle ABC?
DiKsa [7]

180 - x = r is true.

Thats the only one which is true.

5 0
3 years ago
Error Analysis: Pedro compares 7/33 and 2/11. He incorrectly says 7/33 < 2/11 because 4.71 < 5.50. Compare 7/33 and 2/11.
madreJ [45]
He divided the wrong way.  7/33 = .2121.....and 2/11 = .1818...., so actually 2/11 < 7/33
5 0
3 years ago
I NEED HELP WILL GIVE BRAINLIEST!! PLEASE HELP ME ASAP!!!!
GenaCL600 [577]

Answer:

A. The length of the second leg is 8.5 inches

B. The length of the three-dimensional diagonal is 9.9 inches

Step-by-step explanation:

Let us revise the relation between the hypotenuse and the two legs of a right triangle

(hypotenuse)² = (vertical leg)² + (horizontal leg)²

∵ The length of the rectangular box = 8 inches

∵ The width of the rectangular box = 3 inches

∵ The height of the rectangular box = 5 inches

∵ Length and width are perpendicular to each other

∴ The Δ whose legs are 3 and 8 is a right triangle

In the right Δ whose legs are 3 and 8

∵ (hypotenuse)² = (3)² + (8)²

∴ (hypotenuse)² = 9 + 64

∴ (hypotenuse)² = 73

- Take √  for both sides

∴ hypotenuse = \sqrt{73} = 8.544003745

- Round it to the nearest tenth of one inch

∴ hypotenuse = 8.5 inches

A.

The 3-dimensional diagonal is the hypotenuse of a right triangle whose legs are the vertical edge and the hypotenuse of the right triangle whose legs are 3 and 8

∵ The hypotenuse of the right triangle whose legs are 3 and

   8 is 8.5 inches

∴ The length of the second leg is 8.5 inches

B.

In the right triangle whose hypotenuse is the 3-dimensional diagonal and legs are the vertical edge , the hypotenuse of the right triangle whose legs are 3 and 8

∵ (3-dimensional diagonal)² = (5)² + (73)²

∴ (3-dimensional diagonal)² = 25 + 73

∴ (3-dimensional diagonal)² = 98

- Take √ for both sides

∴ 3-dimensional diagonal = \sqrt{98} = 9.899494937

- Round it to the nearest tenth of an inch

∴ 3-dimensional diagonal = 9.9 inches

∴ The length of the three-dimensional diagonal is 9.9 inches

<em>V.I.N: you can find the length of the  three-dimensional diagonal by using this rule → </em>d=\sqrt{l^{2}+w^{2}+h^{2}}<em> </em>

3 0
3 years ago
Find the distance from point a (7/8, -1/8) to point b (-1/8, 7/8)
VashaNatasha [74]

Answer:

 sqrt(2)    ≈1.414213562

Step-by-step explanation:

Distance is found by the formula

d =sqrt ( (x2-x1)^2 + (y2-y1)^2)

   = sqrt( (-1/8 - 7/8)^2 + (7/8 --1/8)^2)

      sqrt( (-8/8)^2 + (7/8 +1/8)^2)

       sqrt( (-1)^2 + (1)^2)

        sqrt ( 1 +1)

         sqrt(2)  

3 0
3 years ago
1. <br> Solve for x.<br><br> 1<br> 3<br> x<br> -<br> 4<br> =<br> 11<br><br> x=
kolezko [41]

We conclude that the solution to the given linear equation is x = 15/13.

<h3>How to solve that equation for x?</h3>

Here we have the linear equation:

13x - 4 = 11

And we want to solve this for x. To do so, we need to isolate x in one side of the equation.

We can start by adding 4 in both sides, so we get:

13x - 4 + 4 = 11 + 4

13x = 15

Now we can divide both sides by 13, so we get:

13x/3 = 15/13

x = 15/13

We conclude that the solution to the given linear equation is x = 15/13.

If you want to learn more about linear equations:

brainly.com/question/1884491

#SPJ1

7 0
1 year ago
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