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Svetach [21]
3 years ago
5

Can someone please answer this question please answer it correctly and please show work I need it today please I need it today I

really need it please help

Mathematics
1 answer:
Sedaia [141]3 years ago
5 0

Answer:

8) C

9) -34.72

10) B

12) -0.83 pounds

18) $13.75

Step-by-step explanation:

8) 2/3m = 4/6m

4/6m + 5/6m = 9/6m = 1 1/2m

-1 1/6 + -1 1/3 = -2 1/2

9) -44.84 - 24.6 = -69.44

-69.44 ÷ 2 = -34.72

10) -4°F + 4°F

12) -1.56 + 0.73 = -0.83

18) 1,500 × 0.16 = 240

515 - 240 = 275

275 ÷ 20 = 13.75

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Use the net to compute the surface area of the three-dimensional figure.
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9514 1404 393

Answer:

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Step-by-step explanation:

The central four rectangles down the middle of the net are 9 units wide, and alternate between 8 and 7 units high. Then the area of those four rectangles is ...

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The rectangles making up the two left and right "wings" of the net are 8 units high and 7 units wide, so have a total area of ...

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__

<em>Additional comment</em>

You can reject the first two answer choices immediately, because they are odd. Each face will have an area that is the product of integers, so will be an integer. There are two faces of each size, so <em>the total area of this figure must be an even number</em>.

You may recognize that the dimensions are 8, 8+1, 8-1. Then the area is roughly that of a cube with dimensions of 8: 6×8² = 384. If you use these values (8, 8+1, 8-1) in the area formula, you find the area is actually 384-2 = 382. That area formula is A = 2(LW +H(L+W)).

3 0
2 years ago
Elena has 35 magazine subscriptions to sell. Each magazine subscription costs $8.50. Elena sold 17 magazine subscriptions on Fri
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The estimate obtained from a sample of which size is likely to be closest to the actual parameter value of a population?
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Step-by-step explanation:

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