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storchak [24]
3 years ago
14

Select the statement that correctly compares two numbers.

Mathematics
1 answer:
shepuryov [24]3 years ago
4 0
D because it’s the same
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Find the total area for the regular pyramid. T.A. xxx(sqr) + xx (sqr)x
N76 [4]
We are to solve the total area of the pyramid and this can be done through area addition. We first determine the area of the base using the Heron's formula.
                           A = √(s)(s - a)(s - b)(s - c)
where s is the semi-perimeter
                                 s = (a + b + c) / 2
 Substituting for the base,
                               s = (12 + 12 + 12)/ 2 = 18
                          A = (√(18)(18 - 12)(18 - 12)(18 - 12) = 62.35
Then, we note that the faces are just the same, so one of these will have an area of,
                                s = (10 + 10 + 12) / 2 = 16
                                  A = √(16)(16 - 12)(16 - 10)(16 - 10) = 48
Multiplying this by 3 (because there are 3 faces with these dimensions, we get 144. Finally, adding the area of the base,
                          total area = 144 + 62.35 = 206.35
5 0
3 years ago
Nine tenths of the grade 9 class are in the gym. If these students are divided into three equal groups, what fraction of the cla
Dahasolnce [82]
Times by 3. Then divide the top backup by 3 to get 9/30. 9/30+9/30+9/30=27/30=9/10.
3 0
3 years ago
If John read only 10 pages of a book in an hour, how long would it take to read all the pages of the book if it has 487 pages?
melisa1 [442]
Forty nine hours and ten minutes I’m pretty sure
4 0
3 years ago
I need help with my homwork
Reil [10]
M= 1/2x+6
N= 1/2x-3
They both have the same slope.
6 0
3 years ago
Find the % of change. Original price: $185 New price: $160
mojhsa [17]

Answer:

-13.51

Step-by-step explanation:

work out the difference (increase) between the two numbers you are comparing. Then: divide the increase by the original number and multiply the answer by 100. % increase = Increase ÷ Original Number × 100.,


so, -13.51

8 0
2 years ago
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