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Allisa [31]
3 years ago
10

Shawna, Dexter, and Tilana are solving the equation -2.5(5-n)+2=15. Shawna says, “I can begin by dividing each side of the equat

ion by –2.5 to get 5-n-2/2.5=-15/2.5." Dexter says, “I can begin by distributing -2.5 to get -12.5+2.5n+2=15." Tilana says, “I can begin by multiplying each side of the equation by -1/2,5 to get 5-n-0.8=-6." Which students are correct?
Mathematics
2 answers:
Salsk061 [2.6K]3 years ago
6 0
Shawna and Dexter are both correct.
I hope this helps you
laila [671]3 years ago
4 0
Hi!
Shawna is correct because since it's multiplied to the  5-n you have to do the opposite which is division. 
Dexter is also correct because after distributing you can continue solving, there is nothing wrong with that. 
Hope this helps!
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You need to solve  5 equations  
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1. 7x - 2.1 = 14.1
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x = 2.314     so first number in the domain is  2.314

You can calculate the other 4 in the same way
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3 years ago
3. The breaking apart of rock by physical means is
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Answer:

Weathering

Step-by-step explanation:

Weathering is the physical and chemical breakdown of rock at the earth's surface.  The physical breakdown of rock involves breaking rock down into smaller pieces through mechanical weathering processes. These processes include abrasion, frost wedging, pressure release (unloading), and organic activity.

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3 0
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Bumek [7]

Answer:

0.19975

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P = nCr pʳ qⁿ⁻ʳ

where n is the number of trials,

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Given:

n = 11

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3 0
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Answer:

No

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=> 7 + 13 = 20 > 5 (Checks off the rule)

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Hope this helps!

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2 years ago
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