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velikii [3]
3 years ago
11

SO I NEED HELP ON THIS

Mathematics
1 answer:
erma4kov [3.2K]3 years ago
8 0
Angle DAB is equivalent to angle DCB. The answer is 65°
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Help I have to turn this in. In a couple hours
Gelneren [198K]

28. Surface Area

This is some sort of house-like model so for every face we see there's a congruent one that's hidden.  We'll just double the area we can see.

Area = 2 × ( [14×9 rectangle] + 2[15×9 rectangle]+[triangle base 14, height 6] )

Let's separate the area into the area of the front and the sides; the front will help us for problem 29.

Front =  [14×9 rectangle] + [triangle base 14, height 6]

          = 14×9 + (1/2)(14)(6) = 14(9 + 3) = 14×12 = 168 sq ft

OneSide =  2[15×9 rectangle] = 30×9 = 270 sq ft

Surface Area = 2(168 + 270) = 876 sq ft

Answer: D) 876 sq ft

29.  Volume of an extruded shape is area of the base, here the front, times the height, here 15 feet.  

Volume = 168 * 15 = 2520 cubic ft

Answer: D) 2520 cubic ft

6 0
3 years ago
What is 15% of 140
Mariulka [41]


15% of 40

Of = Multiplication

15% Multiply by 40

Set up a equation

15/100= x/140

Cross Multiply

15* 140= 100*x

2100= 100x

Divide both sides by 100x

2100/100x= 100x/100x

X= 21


3 0
3 years ago
Read 2 more answers
Question: x-10&lt;6-5x<br><br> is it <br><br> x&lt;8/3<br><br> OR<br><br> x&lt;-8/3<br><br> help ;-;
Montano1993 [528]

You need to isolate/get x by itself in the inequality:

x - 10 < 6 - 5x           Add 5x on both sides

x + 5x - 10 < 6 - 5x + 5x

6x - 10 < 6              Add 10 on both sides

6x - 10 + 10 < 6 + 10

6x < 16          Divide 6 on both sides to get x by itself

x     Simplify the fraction

x          So the 1st option

7 0
3 years ago
Need help please someone
Setler [38]

Please look at the picture. If you can't see it, I'll write it out for you.

8 0
3 years ago
In Exercises 15-18, find the coordinates of the centroid of the triangle with the given vertices. (See Example 2.) 15. A(2,3), B
damaskus [11]

9514 1404 393

Answer:

  (5, 3 2/3)

Step-by-step explanation:

The centroid coordinates are the average of the vertex coordinates.

  (A+B+C)/3 = ((2, 3) +(8, 1) +(5, 7))/3 = (2+8+5, 3+1+7)/3 = (15, 11)/3

The centroid is (5, 3 2/3).

_____

The graph shows the intersection of the medians. It is the centroid, (5, 3 2/3), as we calculated.

3 0
3 years ago
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