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Genrish500 [490]
2 years ago
6

8.9+9.5r=−100.445 what is r? first will be marked brainliest!

Mathematics
2 answers:
dexar [7]2 years ago
8 0

Answer:

Step-by-step explanation:

Begin by isolating the term with the r in it. Do that by subtracting 8.9 from both sides:

9.5r = -110.445 - 8.9 and

9.5r = -119.345  Divide both sides by 9.5 to get

r = -119.345/9.5 and

r = 12.56263158 (or you could leave it as a fraction)

aleksandr82 [10.1K]2 years ago
8 0
The answer is 11.51.


8.9+9.5r=-100.445, so we have to remove the 8.9 by subtracting it from both sides.

9.5r=-109.345, but now we have to get r by itself, so we have to divide both sides by 9.5

r=-11.51
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Solve the System of Equations
soldi70 [24.7K]

Answer:

Equations: x+y=80\,,\,2x+4y=216\,\,

number of chickens = 52

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Step-by-step explanation:

Given: A small ranch has chickens and goats

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Total number of legs = 216

To find: number of chickens and goats

To draw: the graph

Solution:

Let x denotes number of chickens and y denotes number of goats.

According to the question,

x+y=80\,\,(i)\\2x+4y=216\,\,(ii)

From (i), put x=80-y in (ii)

2(80-y)+4y=216\\160-2y+4y=216\\2y=216-180\\2y=56\\y=\frac{56}{2}=28

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Download pptx
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